Etnyre PAVER SPECIAL RPS Series User manual

M-RPS-04
Starting with Serial Number Q26411
Supersedes MP-RPS-00
PAVER SPECIAL
RPS SeriesTrailers

1
M-RPS-04
RPS PAVER SPECIAL SERIES TRAILER
PARTS AND OPERATION MANUAL
For Units with Serial Number Q26411 and Up
Supersedes Manual Number MP-RPS-00
WARRANTY
E. D. Etnyre Co. warrants to the original Purchaser, it’s new product to be free from defects in mate-
rial and workmanship for a period of six (6) months after date of delivery to original Purchaser. The
obligation of the Company is limited to repairing or replacing any defective part returned to the
Company and will not be responsible for consequential damages or any further loss by reason of such
defect.
The company excludes all implied warranties of merchantability and fitness for a particular
purpose. There are no warranties, express or implied, which extend beyond the description of
the goods contained in this contract.
This warranty does not obligate the Company to bear the cost of machine transportation in connec-
tion with the replacement or repair of defective parts, nor does it guarantee repair or replacement of
any parts on which unauthorized repairs or alterations have been made or for components not manu-
factured by the Company except to the extent of the warranty given by the original Manufacturer.
This warranty does not apply to:
(1) Normal start-up services, normal maintenance services or adjustments usually performed
by the selling dealer, factory service representative or customer personnel.
(2) Any product manufactured by E. D. Etnyre Co. purchased or subjected to rental use.
(3) Any product or part thereof which shows improper operation, improper maintenance,
abuse, neglect, damage or modification after shipment from factory.
(4)Any product or part thereof damaged or lost in shipment. Inspection for damage should be
made before acceptance or signing any delivery documents releasing responsibility of the
delivering carrier.
This warranty and foregoing obligations are in lieu of all other obligations and liabilities including
negligence and all warranties of merchantability or otherwise, express or implied in fact or by law.
E. D. ETNYRE & CO., Oregon, Illinois 61061-9778
1333 South Daysville Road Phone: [phone] or 815/732-2116 Fax: [phone]
www.etnyre.com
R

2
GENERAL
Table Of Contents
Warranty............................................................................1
Table Of Contents .............................................................2
List Of Figures...................................................................3
Safety Precautions, ...........................................................4
Hazard Seriousness Level ................................................4
Reporting Safety Defects ..................................................4
Unit Nameplate or Certification Label ...............................5
Serial Number Data ..........................................................5
Trailer Capacity Data ........................................................5
Tire and Rim Data .............................................................5
System Specifications .......................................................5
Operating Instructions .......................................................5
Warning and Caution Information .....................................5
General Identification ........................................................7
Table 1. Torque Specifications For Standard Hardware....8
Trailer to Tractor Connect Procedure ................................9
Trailer to Tractor Disconnect Procedure ...........................9
General Rear Loading and Unloading Procedures .........10
General Road Check Procedures ...................................10
Ramp Operating Instructions .......................................... 11
Maintenance ...................................................................12
Table 2. Maintenance Schedule ......................................12
Maintenance Schedule ...................................................12
Table 3. Electrodes for Weld Repairs..............................14
Maintenance Procedures ................................................14
Frame Inspection ............................................................14
Weld Repairs...................................................................14
Wheel Bearings...............................................................14
Undercarriage .................................................................15
Service Guide - Ridewell Suspensions ...........................15
Basic Operation ..............................................................15
Air Springs & Height Control Valve .................................15
Air Pressure & Brake Protection Valve............................16
Operational Inspection ....................................................16
Preventive Maintenance .................................................16
Daily ................................................................................16
Every 30 Days.................................................................16
Every 90 Days & With Annual Inspection........................16
Welding Guidelines .........................................................17
Welding Methods, Materials & Personnel .......................17
Weld Joint Preparation....................................................17
Welding Procedure..........................................................17
Repair Welding................................................................18
Welding Precautions .......................................................18
Alignment Of Axle ...........................................................19
Height Control Valve Operation.......................................19
Set Up .............................................................................19
Adjustment ......................................................................19
Valve Replacement .........................................................20
Tires And Disc Wheels ....................................................20
Tire Inflation ....................................................................20
Tire Overinflation .............................................................20
Tire Underinflation ...........................................................20
Matching Dual Tires ........................................................21
Removing Tire and Disc Wheel Assembly ......................21
Mounting and Demounting Tires on Disc Wheels ...........21
Mounting Tire and Hub Piloted Type Disc Wheels ..........21
Checking Tightness on Mounted Dual Disc Wheels .......22
Hubs................................................................................22
Hub Removal ..................................................................22
Inspection and Cleaning .................................................22
Hub Installation ...............................................................22
Air Systems and Brakes..................................................22
Air Systems and Brakes - General..................................22
Air System Tests .............................................................22
Air Reservoir ...................................................................23
Air Hoses and Tubing......................................................23
Brake Relay Emergency Valve........................................23
Air Brake Chambers........................................................23
Brake Air Supply System Description .............................23
Relay Emergency Valve ..................................................24
Brake Chambers .............................................................25
Brake Chamber Servicing ...............................................25
Brake Chamber Removal................................................25
Brake Chamber Disassembly .........................................25
Cleaning and Inspection of Parts ....................................26
Brake Chamber Assembly ..............................................26
Installation .......................................................................26
Trailer ABS ......................................................................26
Air Brakes........................................................................26
General ...........................................................................26
Operating Checks ...........................................................26
Brake Assembly ..............................................................26
Slack Adjuster .................................................................27
Gunite Automatic Slack Adjuster .....................................27
Recommended Preventative Maintenance .....................27
Every Three Months or 25,000 Miles ..............................27
Every Six Months or 50,000 Miles ..................................27
Testing Adjuster Function ................................................27
Boot Replacement ..........................................................28
Boot.................................................................................28

3
GENERAL
Table Of Contents
Figure 1. Etnyre RPS Paver Special .................................4
Figure 2. Unit Nameplate or Certification Label ................5
Figure 3. Unit Nameplate and Decals ...............................6
Figure 4. Standard Hardware............................................8
Figure 5. Inspection of Kingpin for wear ...........................9
Figure 6. Bi-Fold Ramps ................................................. 11
Figure 7. Control Valve Positions ....................................11
Figure 8. Maintenance Checkpoints ..............................13
Figure 9. Check Oil Level of Oil Lubricated Bearings. ....15
Figure 10. Tightening Sequence .....................................15
Figure 11. Eccentric Bolt Inspection................................16
Figure 12. Root Weld Gap ..............................................17
Figure 13. Multiple Pass Recommended Method ...........17
Figure 14. No Weld Zones ..............................................18
Figure 15. Alignment of Axle ...........................................18
Figure 16. Hanger Sticker ...............................................19
Figure 17. Height Control ValveAsm ..............................19
Figure 18. Proper Tire Inflation .......................................20
Figure 19. Removal of Tires & Hub Piloted Wheels ........21
Figure 20. Checking Oil Level in Hub .............................22
Figure 21. Brake Air Supply System - 2 Axle Shown ......23
Figure 22. Relay Emergency Valve.................................24
Figure 23. Brake Chamber..............................................25
Figure 24. Brake Components ........................................27
Figure 25. Lubrication Point- Slack Adjuster ...................27
Figure 26. Adjuster Function ...........................................28
Figure 27. Clevis Pins, Hex Extension and Boot ............28
Figure 28. Boot ...............................................................28
Figure 29. Boot Position..................................................29
Figure 30. Slack Adjuster Lubrication Points ..................29
Figure 31. Measuring Maximum Stroke ..........................30
Figure 32. Gooseneck Socket Connection .....................35
Figure 33. Hydraulic Oil Check .......................................35
Figure 34. Directional Control Valve Pressure Relief ......36
List Of Figures
Slack Adjuster .................................................................29
Crewson Brunner Automatic Slack Adjuster ...................29
Recommended Preventive Maintenance ........................29
Every Three Months or 25,000 Miles ..............................29
Every Six Months or 50,000 Miles ..................................29
Testing Adjuster Function ................................................29
Slack Adjuster Replacement ...........................................30
Trouble Analysis for Air Brakes .......................................32
Electrical..........................................................................35
Lighting System ..............................................................35
Hydraulics .......................................................................35
General ...........................................................................35
Hydraulic Power Pack Filter ............................................35
Checking Hydraulic Rex/rvoir Oil Level...........................35
Changing Hydraulic Oil ...................................................35
Checking & Adjusting Relief Pressure at Control Valve ..36
Trouble Analysis for Hydraulic Systems ..........................37
Electrical Hydraulic Power System - Q473524 ...............38
Electro-Hydraulic Module - Q466329 ..............................39
Decals, Warnings & ID ....................................................40
Ramp Installation ............................................................41
Auxiliary Air Group - Q473908 - thru S/N Q28299 ..........42
Auxiliary Air Group - Q519023 - S/N Q28300 & Up ........43
Air Schematic-w/ABS - Q502978 - Thru S/N Q27598.....44
Air Schematic-w/ABS - Q513583 - S/N Q27599 & Up ....45
Electrical Group - Q502012 ............................................46
Electrical Group, LED - Q519546 ...................................47
Electrical Schematic - ABS 2S/2M - Q502897 ................48
Electrical Schematic - ABS - S/N Q27599 & Up .............49
Axle .................................................................................50
Air Chamber - Slack Adjuster..........................................52
Brake Assembly - 12-1/4 X 7-1/2 ....................................53
Tire & Wheel Assembly ...................................................54
Hub & Drum Assemblies .................................................55
Hendrickson - Air Suspension .........................................56
Ridewell - Air Suspension ...............................................57

4
GENERAL
Safety Precautions,
Hazard Seriousness Level
You will find safety information boxes throughout
this manual. These boxes contain information alerting
you to situations or actions to avoid.
Signal words (DANGER, WARNING and CAU-
TION) are used to identify levels of hazard serious-
ness. Their selection is based on the likely conse-
quence of human interaction with a hazard. Defini-
tions of hazard levels are as follows.
DANGER - Immediate hazards which
will result in severe personal injury or death.
WARNING - Hazards or unsafe prac-
tices which could result in severe personal
injury or death.
CAUTION - Hazards or unsafe prac-
tices which could result in minor personal
injury or product or property damage.
Reporting Safety Defects
If you believe that your vehicle has a defect which
could cause a crash or could cause injury or death, you
should immediately inform the National Highway Traf-
fic Safety Administration (NHTSA) in addition to no-
tifying E. D. ETNYRE & CO.
If NHTSA receives similar complaints, it may open
an investigation, and if it finds that a safety defect ex-
ists in a group of vehicles, it may order a recall and
remedy campaign. However, NHTSA cannot become
involved in individual problems between you, your
dealer or E. D. ETNYRE & CO.
To contact NHTSA, you may either call the Auto
SafetyHotline toll-freeat 1-800-424-9393(or 366-0123
in Washington, D. C. area) or write to: NHTSA, U. S.
Department of Transportation, Washington, D. C.
20696. You can also obtain other information about
motor vehicle safety from the hotline.
General
This manual contains operation, maintenance and
service instructions for the Etnyre RPS Series trailers
(see figure 1). The operating instructions must be read
and understood before operating the unit. The operator
must be responsible for maintaining the unit in good
working condition.
To identify the maximum load capacity of your
trailer, examine the Etnyre model number. It contains a
condensed description of the unit.
This manual covers the standard features and op-
tions of the Etnyre Paver Special series trailers. If your
trailer incorporates custom features, some of the infor-
mation contained in this manual may not apply. If you
haveany questionsregarding this manual or yourtrailer,
contact your dealer or the E. D. Etnyre Service Depart-
ment at 1-800-995-2116.
A typical model number such as RTN35TD3-T1
would describe the following trailer:
RPS 35 TD3 T1
(A) (B) (C) (D)
A. The first group describes trailer type: RPSmodel,
Paver Special.
B. The second group indicates trailer capacity: 35 =
thirty five U.S. tons.
C. The third group describes trailer undercarriage
and platform: TD3 = triple axle undercarriage with a
drop deck (“TD” only indicates a tandem axle under-
carriage with a drop deck).
D. The fourth group describes additional informa-
tion: T1 = constructed using T1 steel.
Figure 1. Etnyre RPS Paver Special

5
GENERAL
Unit Nameplate or Certification Label
The unit serial number plate or certification label is
located on the left hand gooseneck beam web. The
nameplate or certification label must remain perma-
nently affixed to the unit. (See figure 2).
Serial Number Data
The unit serial number on the certification label is
also stamped into the gooseneck beam web plate near
the nameplate and on the outside frame member at the
left hand forward corner of the frame. (See figure 2).
NOTE: The complete serial number must be iden-
tified when ordering parts or communicating ser-
vice information to Etnyre.
Trailer Capacity Data
Trailers manufactured in the United States list the
maximum"GrossVehicleWeight Rating" (GVWR) and
the maximum "Gross Axle Weight Rating" (GAWR)
on the certification label.
The Gross Vehicle Weight Rating is the sum of the
trailer weight and the trailer capacity. This is the maxi-
mum structural capacity of the trailer.
The GrossAxle Weight Rating is the maximum load
any axle can carry.
Thecertification labelshows "GVWR" and"GAWR"
at reduced speeds, at the bottom of the label. The
GVWR may be reached under certain circumstances
before the GAWR or vice versa.
WARNING
Do not exceed the GVWR or GAWR at the
specified speed. These weight limitations are
independent of road weight limitations imposed
by law.
Tire and Rim Data
The certification label lists the correct rim size, tire
size and tire inflation pressures for the trailer.
WARNING
Do not use undersize rims or tires. Do not
underinflate or overinflate the tires.
System Specifications
Unit specifications are listed in the General Section
Figure 2. Unit Nameplate or Certification Label
Operating Instructions
Operating instructions are contained in the Opera-
tion Section.
WARNING
The operator must understand the operating
instructions completely before operating the
unit. Personal injury and/or damage to the unit
may occur if the operating instructions are not
followed.
Warning and Caution Information
Warning and caution information is given through-
out this manual. Particular care must be given to warn-
ing and caution information contained in the Operation
Section (Operating Instructions) and where noted with
proper service procedures in other sections.
NOTE: Warning and caution decals are affixed
to all units at the factory. These decals contain warning
and caution information which must be followed by all
persons operating or servicing an Etnyre trailer. Any
warning or caution decal which is lost, or difficult to
read, must be replaced at once. Replacement decals
may be obtained from any Etnyre trailer dealer.
Refer to Figure 3 for the location of the nameplate
and decals on the Etnyre trailer.
R

6
GENERAL
Care and maintenance information for your Etnyre
traileris given inthe Maintenancesection. Maintenance
schedules and recommended procedures must be fol-
lowed to maximize service life.
REF PART NO. QTY DESCRIPTION REF PART NO. QTY DESCRIPTION
Figure 3. Unit Nameplate and Decals
WARNING
ThieTrailer is warning for the
onlheing beofier ahen forest tr
ees bemy actulator bygones t
herfore yestlda
ThieTrailer is warning for the
onlheingbeofier ahen forest tr
eesbemy actulator bygones t
herforeyestlda
PATENTS PENDING
ThieTrailer is warning for the
onlheingbeofier ahen forest tr
eesbemy actulator bygones t
herforeyestlda
ThieTrailer is warning for the
onlheingbeofier ahen forest tr
eesbemy actulator bygones t
herforeyestlda
ThieTrailer is warning for the
onlheingbeofier ahen forest tr
eesbemy actulator bygones t
herforeyestlda
PATENTS PENDING
PATENTS PENDING
WARNING
POSITIONRATCHET BINDER RAIL INTIGHTENING
POSITIONAND FREE WHEEL RATCHET HANDLE AGAINST
TRAILERFRAME BEFORE TRANSPORTINGTRAILER. RATCHET
BINDERCOULD LOOSEN AND RELEASE THE RAMPS IF
THESEINSTRUCTIONS ARE NOT FOLLOWED.
DANGER
STAND CLEAR
CAUTION
FULLYEXTEND
HYDRAULIC BEFORE
REMOVING LOCK
BAR
RAMP
SELECTORVALVE
RIGHT SIDE-IN
LEFT SIDE-OUT
AIR RIDE HEIGHT CONTROL
(IN)AUTOMATIC (NORMAL RIDE)
(OUT)LOWER (FOR LOADING)
WARNING
LOCKINGBAR SHOULD BE
REMOVEDFROMTHE
INTERMIDIATEHINGE PIN
ANDLOWERED TOTHE
GROUNDIMEDIATELY
AFTEREXTENDING TAIL
RAMP.FAILERTO DO SO
COULDALLOW BARTO FALL
ANDCAUSE INJURY.
REAR RAMP OPERATINGINSTRUCTIONS
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
CONTROLVALVE
IN FLOAT
LOWER
NEUTRAL
OUT RAISE
1234,5,6
7
89
12
13
14
15
10 11
GOOSENECK
BI-FOLD RAMPS
1Q452415 1 Decal-WARNING Proper Trl Oper
23390149 2 Plate-Name, Straight, ETNYRE
3Q452390 1 Decal-Trademark, Patents
4Q445617 1 Serial Plate Decal
5Q445616 1 Cover-Serial Plate
6Q403882 4 Pop Rivert AD610BS
72790527 AR Tape-Conspicuity, 2 In, RED/WHITE
8Q484255 1 Decal-Air Ride Height Control
9Q492826 1 Decal: Ramp Operation
10 Q492761 2 Decal: Warning, Bi-Fold Ramp, Bar
11 Q474392 1 Instruction Decal Control Valve
12 Q474272 1 Decal-Selector Valve
13 Q485518 2 Decal-Ratchet Binder
14 Q459148 2 Danger Decal-Stand Clear
15 Q474697 2 Decal-Caution Lock Bar
AR=As Required

7
GENERAL
Kingpin
Q400449
Board-Apitong, 1.50 x 7.25
6321035
Drive Screw, Torx Hd, 5/16 x 3 1/8
6100396
Ramp Installation, 3' x 12'
Q499330
Power Pack
Bent Lash Ring
Q508406
Tire & Wheel Asm
Q496942-02
Landing Gear Installation
Q499334
General Identification

8
GENERAL
Table 1. Torque Specifications For Standard Hardware
NOTE: This table lists torque values for standard hardware and is intended as a guide for average applications
involving typical stresses and machined surfaces. Values are based on the physical limitations of clean, plated and
lubricated hardware. In all cases, when an individual torque value is specified, it should take priority over values given
in this table. Replace original equipment with hardware of equal grade.
Figure 4. Standard Hardware
GRADE 8GRADE 5 PLACEBOLT SOCKET HEAD
CAPSCREW 12 POINT CAPSCREW
SAE Grade 5 Capscrews SAE Grade 8 Capscrews
Nominal Thread Torque Torque Torque Torque
Size Series (ft. lbs.) (Nm) (ft. lbs.) (Nm)
DRY LUBED DRY LUBED DRY LUBED DRY LUBED
1/4 20 UNC 8 6 11 9 12 9 16 12
28 UNF 10 7 13 10 14 10 19 14
5/16 18 UNC 17 13 24 18 25 18 33 25
24 UNF 19 14 26 20 27 20 37 28
3/8 16 UNC 31 23 42 31 44 33 59 44
24 UNF 35 26 47 36 49 37 67 50
7/16 14 UNC 49 37 67 50 70 52 95 71
20 UNF 55 41 75 56 78 58 105 79
1/2 13 UNC 75 57 100 77 105 80 145 110
20 UNF 85 64 115 86 120 90 165 120
9/16 12 UNC 110 82 145 110 155 115 210 155
18 UNF 120 91 165 125 170 130 230 175
5/8 11 UNC 150 115 205 155 210 160 285 215
18 UNF 170 130 230 175 240 180 325 245
3/4 10 UNC 265 200 360 270 375 280 510 380
16 UNF 395 225 405 300 420 315 570 425
7/8 9 UNC 430 320 580 435 605 455 820 615
14 UNF 475 355 640 480 670 500 905 680
1 8 UNC 645 485 875 655 910 680 1230 925
14 UNF 720 540 980 735 1020 765 1380 1040
1 - 1/8 7 UNC 795 595 1080 805 1290 965 1750 1310
12 UNF 890 670 1210 905 1440 1080 1960 1470
1 - 1/4 7 UNC 1120 840 1520 1140 1820 1360 2460 1850
12 UNF 1240 930 1680 1260 2010 1500 2730 2050
1 - 3/8 6 UNC 1470 1100 1990 1490 2380 1780 3230 2420
12 UNF 1670 1250 2200 1700 2710 2040 3680 2760
1 - 1/2 6 UNC 1950 1460 2640 1980 3160 2370 4290 3210
12 UNF 2190 1650 2970 2230 3560 2670 4820 3620

9
GENERAL
General
This section contains information required for the
operation of Etnyre RPS model trailers.
WARNING
Read these instructions thoroughly and
observe them when operating Etnyre trailers.
Operate by Authorized, Trained Personnel
only!
The trailer must be maintained in good operating
condition. Minor damage can quickly result in a major
failure if not repaired.
WARNING
Do not operate a trailer needing repair.
Do not undersize the prime mover. The prime
mover (tractor) must be compatible with the
trailer and have adequate capacity.
Do not permit the bottom of a trailer with low
ground clearance to hit or slide on or over
curbs, railroad crossings or other obstructions
that can cause damage to the trailer or stall the
vehicle.
Do not exceed either the GVWR or GAWR
shown on the certification label. These ratings
are listed for trailers at various speeds and
reflect the maximum GVWR and GAWR at
those speeds.
Keep personnel clear when loading and
unloading trailers.
Trailer to Tractor Connect Procedure
1. Inspect the fifth wheel area and the trailer frame
for wear, structural cracks, damaged or broken deck-
ing.
2. Check the kingpin for wear or damage. Replace it
if the diameter measures less than 1 7/8" at any point
(see figure 5).
3. Check the bolts for tightness. Tighten if required.
Refer to Table 1 for correct torque values.
4. Connect the trailer to the fifth wheel.
5. Connect the glad hands and build up reservoir air
pressure. Make sure that air line connections between
trailer and truck are made.
6. Connect the plug into the electrical socket. Make
sure that electrical connection between trailer and truck
is made.
7. Check the lights, turn signals and reflectors for
operation.
Figure 5. Inspection of Kingpin for wear
WARNING
Check to insure that the kingpin is locked into
the tractor fifth wheel.
8. Before operating the trailer, test the air brake sys-
tem using the following procedure:
a. Check the air system pressure. The system must
hold 100 PSI (7 Bar) minimum.
b. Apply the brakes. Inspect the brake action on all
the wheels for proper application.
c. Release the brakes. The brakes must release
promptly. The air pressure must discharge quickly from
the relay emergency valve.
d. Disconnect the emergency line from the trailer.
The trailer brakes must automatically apply.
e. Connect the emergency line to the trailer. The
trailer brakes must release.
9. Check the tires for proper inflation pressure. In-
spect the tires for cuts or other damage.
10. Raise the landing legs and pin them in the up
position.
Trailer to Tractor Disconnect Procedure
1. Disconnect the electrical and air connection be-
tween the gooseneck and the truck.
2. Lower the landing legs and pin them in the low-
ered position.

10
OPERATION
WARNING
Use care when loading and unloading. Move
the machine on or off the trailer slowly!
Extension bracket will not support the full load
weight.
3. Center the load. Do Not load to one side. Position
the load for proper weight distribution.
4. Fasten the load to the trailer.
General Road Check Procedures
During road stops, check the trailer and the load us-
ing the following procedures:
1. Check the fastening equipment.
WARNING
The load must be securely and adequately
fastened to the trailer
2. Inspect the trailer frame structure.
3. Check all the trailer brake drums for heating.
NOTE:A cool brake drum can indicate an inopera-
tive brake.
WARNING
The load must be securely and adequately
fastened to the trailer.
WARNING
Proceed cautiously since a malfunctions or
misadjusted brake can cause the drum to
become extremely hot. Do Not operate the
trailer until the cause of overheating is
corrected.
4. Check to be sure all the wheel nuts are tight.
Tighten as required (see Figure 10),
5. Check the tire inflation. Inspect the tires for cuts
or other damage.
WARNING
Block the trailer wheels
3. Disconnect the fifth wheel lock pin.
4. Pull tractor away from the trailer.
WARNING
Keep hands and feet clear of the point where
the frame contacts the ground.
General Rear Loading and Unloading
Procedures
These procedures must be followed when rear load-
ing or unloading trailers.
WARNING
Load and unload on solid, level terrain.
All rear loading trailers must be connected to the
prime mover (tractor) during all rear loading and un-
loading procedures.
1. Set the brakes on the prime mover and trailer.
WARNING
Block the trailer wheels.
2. When loading or unloading the trailer from the
rear, block under the rear of the trailer frame and under
the load ramps.
NOTE: Place blocks under the load ramps to sup-
port the ramps during loading or unloading. These trail-
ers can also be loaded and unloaded from a dock or
embankment.

11
OPERATION
WARNING
Do Not bleed air from the tires when they are
hot.
6. Inspect the lights, turn signals and reflectors for
operation.
WARNING
Do not operate a trailer needing repair. Correct
any problems found during the road check
immediately.
Ramp Operating Instructions
DANGER
Keep all personnel clear of rear area of trailer
when raising or lowering ramps
WARNING
Locking bar should be removed from the
intermediate hinge pin and lowered to the
ground immediately after extending tail ramp.
Failure to do so could allow bar to fall and
cause injury.
CAUTION
Fully extend hydraulic cylinder before removing
lock bar.
To Lower Ramps
1. On Power Pack units, start the Power Pack. On
truck operated units, hook up the hydraulic lines and
engage the pump.
2. Remove the Ratchet Binder assembly.
3. Raise the approach ramp to fully extended posi-
tion.
4. With the approach ramp fully extended, remove
the Lock Bar from upper pin.
5. Lower the ramp to the ground.
6. Place the valve handle in the "Float" position for
loading.
To Raise Ramps
1. On Power Pack units, start the Power Pack. On
truck operated units, hook up the hydraulic lines and
engage the pump.
2. Raise the ramp to fully extended vertical position.
3. With the ramp in the vertical position, install the
Lock Bar on the upper pin.
4. Lower the approach ramp to travel position.
5. Install the Ratchet Binder assembly.
6. On Power Pack units, turn off the Power Pack. On
truck operated units, disconnect the hydraulic lines and/
or disengage the pump.
Figure 6. Bi-Fold Ramps
Figure 7. Control Valve Positions
Cylinder
Ratchet Binder
Lock Bar
Upper Pin
Approach Ramp
Control Valve
FloatIn
Out
Lower
Neutral
Raise
474392

12
MAINTENANCE
ITEM NO. ITEM Day Wk Mo 25,000 mi. 50,000 mi. QUAN TYPE or REMARKS
or 6 mo or 1 year
15th Wheel Plate XMultipurpose Grease No .1
Kingpin (No. 0 Below 32ºF)
XInspect
2Frame & Decking XCheck
3Undercarriage XCheck
4Wheel Bearings XC3 Pints Multipurpose Gear Oil
(Oil Lubricated) per axle Grade 90
(1.42 liter)
5Rims & Brake XInspect
Drums
6Wheels XX Visual Check. Tighten Lug
Nuts or Rim Clamps
7Tires XCheck Inflation & Remove
Debris Between Duals
8Air Lines XTest
XInspect
9Air Reservoir X2Drain Condensation
10 Relay Emergency X1Clean
Valve
11 Brake Chambers XCheck Condensation Holes
X2Clean. Inspect & Replace
per axle Diaphragm
12 Slack Adjuster and XInspect
Yoke Pin
Table 2. Maintenance Schedule
SCHEDULE
Maintenance
General
This section contains instructions for the care and
maintenance of the Etnyre RPS trailer. This section is
divided into two subsections: a Maintenance Sched-
ule and Maintenance Procedures. The maintenance
schedule lists the recommended distance/time intervals
between maintenance checks. The procedures subsec-
tion provides detailed instructions for performing the
maintenance checks. The instructions listed in the pro-
cedures subsection are given by systems and are not
necessarily in the order listed in Table 2.
Maintenance Schedule
Table 2 lists the recommended maintenance checks.
It is outlined in two schedules: the mileage schedule
and the periodic schedule. Perform maintenance on the
basis of whichever occurs first.
The first column of Maintenance Table 2 should be
used to locate the applicable maintenance procedure
andillustration. Figure 8shows the maintenancepoints.

13
MAINTENANCE
SCHEDULE
ITEM NO. ITEM Day Wk Mo 25,000 mi. 50,000 mi. QUAN TYPE or REMARKS
or 6 mo or 1 year
13 Brakes X8Multipurpose Grease
per axle Note: Do Not over-grease
Brake Spider (or Anchor
Pins when applicable)
XCheck for Overheating
XInspect & Adjust
14 Lights & Reflectors XCheck Operation
15 - with Hydraulic Oil XX13.4 SAE 10W Hydraulic Oil
Power
Pack
16 - with Hydraulic Filter X1Period Shown or 50
Power Element hours of Power Pack
Pack Operation - See Parts
Manual.
17 - with Battery XFill as Required - Use
Power Distilled Water.
Pack
18 - with Power Pack XCheck Motor Mount Bolts
Power for Tightness.
Pack Check electrical connetions
for tightness.
Table 2 Maintenance Schedule
Figure 8. Maintenance Checkpoints
8
1
14
2
15-18
Power Pac
k
Ridewell Suspension 4,7
5,6
3,13
4,7
5,6
3,13
910 11
12
Storage Area

14
MAINTENANCE
Maintenance Procedures
Fifth Wheel Plate and Kingpin Inspection and Lu-
brication
Inspect the kingpin throat for signs of wear. Replace
the kingpin if worn 1/8 inch (3.18 mm) undersize (see
figure 5).
If the grease remaining on the fifth wheel plate con-
tainssand and dirt,clean it beforelubricating. The king-
pin and the fifth wheel plate should be greased thor-
oughly with multipurpose grease before connecting the
tractor and trailer.
Frame Inspection
An important phase of trailer maintenance is the in-
spection and repair, if required, of all structural mem-
bers of the trailer frame. The frame must be one solid
unit to carry the load. This also helps prevent major
repair costs and trailer downtime.
Complete frame inspection is required for various
reasons. Trailers are subjected to considerable abuse
due to heavy loads and difficult road conditions under
which they are operated. A trailer loaded to the maxi-
mum rated capacity and pulled at the highest rated
speeds for long periods of time, could develop struc-
tural damage faster than a trailer carrying lighter loads
at lower speeds. Rough use and poor maintenance will
shorten the life of the trailer.
Check the trailer frame daily for cracked structure,
crackedwelds, andbroken, damagedor lostparts. Struc-
tural cracks will usually show best when the trailer is
loaded. Failures are the result of metal fatigue caused
by flexing and vibration. They will appear as cracks in
the steel frame members. If repairs are needed, do not
operate the unit until the repairs are made. Structural
repairs must be done by persons experienced in this
field.
NOTE: Failure to maintain decking in good condi-
tion may cause damage to crossmembers.
Weld Repairs
Minorrepairs tocrossmembers, floorplates,and other
parts which are not part of a main structural member,
may be repaired without special instruction if good
welding practices are followed.
WARNING
Repairs to major structural members must be
made according to the requirements of the part
being repaired. Care must be taken to ensure
that the repairs do not contain stress
concentrations which could lead to another
failure. Repair of T-1 steel especially requires
additional care.
Table 3 lists the recommended electrodes for the
various steels used in Etnyre trailers.
Wheel Bearings
The oil level must be maintained between the "add"
and "full" lines on the hub cap windows (see figure 9).
Check for cracked windows, missing vent plugs and
for oil leaks around the hub cap. Oil can be added
through either the vent plug or the filler plug. Clean
and inspect the bearings and change the oil at 50,000
miles or at brake relinings.
Table 3. Electrodes for Weld Repairs.
Type of Steel Position of Work AWS Usual Size
Electrode
Carbon and High Strength Vertical, Overhead & Flat E6013 3/16"
Position E7014
E7018*
T1 Alloy Vertical, Overhead & Flat E7018* 3/16
Position E8018*
E11018*
*Low Hydrogen

15
MAINTENANCE
Undercarriage
The undercarriage must be visually examined for
broken and missing parts. Check brackets, adjusting
screws and walking beam ends. Replace faulty parts.
Check the rim clamps or cap nuts for tightness daily.
See Figure 10 for torque specifications and tightening
sequence. Brake drums should be carefully examined
for cracks.
Figure 9. Check Oil Level of Oil Lubricated Bearings.
CAUTION
Do not allow brake drums to become
excessively worn or expensive repairs will be
required.
Figure 10. Tightening Sequence
Service Guide - Ridewell Suspensions
Basic Operation
When properly maintained and operated within de-
sign limits, Ridewell's Monopivot 240 Suspension will
provide many years of trouble-free service. It has sev-
eralunique featureswhich deep maintenance and down-
time to an absolute minimum:
1. ADouble-Bonded, manual clamp-in pivot bush-
ing.
2. A patented, contoured weld-on axle seat that re-
quires no U-bolts.
3. Apatented eccentric bolt for simple, manual axle
alignment.
4. A longer hanger that minimizes kingpin slap by
improving geometry between pivot bushing and axle
center.
5. Aself-contained shock absorber that allows pre-
cise installation and insures proper shock and air spring
tolerances.
Air Springs & Height Control Valve
This air-ride suspension is designed to dampen the
shocks transmitted from road surface to trailer frame
through the Air Springs. The Height Control Valve is
used to maintain the proper ride height from air spring
to chassis (whether empty or loaded) by controlling the
volume of air in the springs.
You may use either a single or dual (leveling) height
controlvalve systemon yourtrailer.Thisservice manual
addresses the Single Valve System which controls ride
height only. A manual or automatic dump valve may
also be incorporated to exhaust air to prevent "dock
creep" when loading or unloading.
Important Note: The air springs used on the
Monopivot 240 have internal rubber bumpers designed
to carry the trailer load should air spring failure or sud-
den loss of air supply occur. Should an air spring fail
on a "single height control valve system," then all of
the air springs will deflate allowing the suspension to
operate on internal bumpers until repairs can be made.
Should an air spring fail on a "dual height control or
leveling valve system," the springs would deflate on
one side only. Simply deflate the other side by remov-
ing the vertical linkage rod from the valve and rotate
the horizontal lever arm DOWN to fully exhaust the
spring.
S
T
E
M
C
O
H
U
B
S
E
A
L
A
D
D
F
U
L
L
FILLTO THIS LEVEL
Tighten Lug Nuts to recommended
torque using sequence shown
1
1
2
3
4
5
6
7
8
9
10
8
76
25
34
8 Stud Hubs
10 Stud Hubs
Torque Value
3/4" nuts - 180/200 Ft Lb
M22 x 1.5 nuts - 450/500 Ft Lb
1
2
3
4
5

16
MAINTENANCE
Air Pressure & Brake Protection Valve
This air-ride suspension is dependent on air pres-
sure from the trailer supply system. Air pressure must
bemaintained above 65P.S.I. beforeoperation.ABrake
Protection Valve must be installed in the air system to
prevent air loss below 65 P.S.I. and to insure safe air
brake pressure in the event of air loss in the suspension
system.
Operational Inspection
1. Inspect all welds at hanger-to-frameconnections.
2. Inspect for proper installation of cross member
between hangers. Hangers should be adequately sup-
ported to prevent side movement.
3. Inspect axle to lower beam weld. Axle should
be snug in contoured axle seat and welded according to
guidelines shown in Figures 12, 13 and 14.
4. Inspect axle alignment to kingpin. Forward axle
should be + 1/16" left to right relative to kingpin. Rear
axle, if equipped, should be in line with forward axle +
1/16" axle center to axle center. Refer to axle align-
ment procedure shown in Figure 15.
5. Inspect automatic air control valve for proper
installation. Valve should be mounted so linkage is free
to operate without interference. Check all linkage con-
nections and air fittings on valve for tightness. Refer to
Figure 20.
6. Inspect air spring.With unloaded trailer on level
surface and supply air pressure in excess of 65 P.S.I.,
all air springs should be of equal pressure. Check for
proper clearance around air spring: minimum 1-3/4".
7. Inspect for proper mounting height. If measure-
mentis incorrect,adjust height controlvalve untilproper
mounting height is achieved.
8. Check all air connections for leaks and tighten
if needed.
9. Inspect air lines. They should be free from sharp
objects and secured to prevent premature failure.
10. Eccentric bolt inspection: (See Figure 11)
Figure 11. Eccentric Bolt Inspection
Preventive Maintenance
Daily
Visually inspect trailer to be sure it is level and that
suspension ride height is correct.
Check for loose or broken parts on or around sus-
pension to prevent any serious problems from occur-
ring.
Every 30 Days
Check clearances around all moving suspension
parts, air springs, tires and shock absorbers.Any signs
of interference should be immediately corrected.
Visually inspect axle connection weld and bolt con-
nections to make sure they are secure. Review and cor-
rect any signs of wear.
Every 90 Days & With Annual Inspection
Check items mentioned above in Daily & 30 Day
inspections.
Also inspect weld integrity at the following connec-
tions: suspension-to-axle, anti-turn washer, locking
plate and hanger-to-frame.
All pivot and clamping connections such as the sus-
pension pivot and the shock mounting must be in-
spected. All pivot and clamping connections such as
the suspension pivot and the shock mounting must be
inspected.
NOTICE!! Ridewell Corp. Bears no responsibility
for suspensions damaged by abuse or neglect. In addi-
tion, any suspensions driven to complete destruction
will not be covered by warranty.
Inspect for
installation of anti-turn
washer for proper
welding as shown
at right.
1/4" Fillet Welds,
1" Long, After Axle
Is Ali
g
ned.
xxx
x
x
xxx
x
x

17
MAINTENANCE
Welding Guidelines
The following precautions and recommendations
must be read and understood by qualified personnel
prior to weld installation of Ridewell Air-Ride Trailer
Suspensions to trailer axles. Any welding procedures
or materials that do not clearly fall within these guide-
lines could compromise the integrity and safety of the
installation.
Welding Methods, Materials & Personnel
A) All welders and welding operators should be
certified per A.W.S (American Welding Society) D1.1
Section 5 Procedures or equal.
B) Recommended welding methods are shielded
metalarc (stick), gasmetal arc (solidwire) or fluxcored
arc (tubular wire) welding. Whatever electrode and
method used must develop a minimum weld tensile
strength of 70,000 P.S.I. Refer to the electrode
manufacturer'srecommendation forvoltage, currentand
shielding medium for the diameter electrode to be used
so the best fusion and mechanical properties can be ob-
tained.
C) All electrodes used should meet A.W.S. Section
5 Specifications and Classifications for welding car-
bon and low alloy steels.
D) If shielded metal arc electrodes (stick) are used,
they must be new and unused, dry, free of contami-
nants and come from a stock that has been purchased
and stored per A.W.S. Section 4.5.2., Low Hydrogen
Electrode Storage Specifications.
Weld Joint Preparation
A) All grease, dirt, paint, slag or other contami-
nants must be removed from the weld joint without
gouging the axle tube.
B) Insure the lower beam assembly fits the axle with
a weld root gap of 1/16" to 1/8" maximum between the
welding wings or uprights as illustrated. (See Figure
16.)
Figure 12. Root Weld Gap
Welding Procedure
A) Ground the axle to one of the attached axle parts
such as the air chamber brackets, cam brackets, or the
brake spider. Never ground the axle to a wheel or
hub as the spindle bearing may sustain damage.
B) The axle assembly should be at a minimum tem-
perature of 60º F (15º C) prior to welding. Pre-heating
the weld zone to the axle manufacturer's recom-
mendedpre-heattemperatureis recommended.This
will minimize the formation of martensitic or brittle
metal structures in the fusion line or the heat affected
zone which may contribute to a premature fatigue fail-
ure in service.
C) The joint to be welded should be positioned in
the flat or horizontal position if possible.
1/16 to
1/8 Max 1/16 to 1/8 Max
FIRST
PASS SECOND PASS THIRD PASS
1/2
3/8 FILLET
WELD 1/2
THIRD PASS
ARC STARTARC START
SECOND PASS
FIRST PASS
THIRD PASS
SECOND PASS
FIRST PASS
Figure 13. Multiple Pass Recommended Method

18
MAINTENANCE
D) Multiple pass welding may be used on the beam/
axle connection using the following guidelines. Total
fillet weld size should be 1/2" (12.7mm).
Multiple pass (recommended method, SMAW,
GMAW, FCAW) weldinitiation and terminationshould
be performed as outlined and shown in (Figure 13).
NOTE: All slag must be removed between passes.
Backstep fill all craters. Each pass must be accom-
plished in two segments. Recommended electrode is
E7018 if SMAW (stick) is used.
IMPORTANT: It may be necessary to C-clamp
axle to axle beam seat prior to welding. This will
insurethatcomplete contactoccursbetween theaxle
housing and beam seat.
Repair Welding
If the beam/axle weld is cracked or broken, the weld
Figure 14. No Weld Zones
can only be repaired if the crack or break does not
extend into the axle tube. To repair the weld, grid or
back gouge the weld/crack down to the base metal. If
the crack extends into the axle tube, or if any other area
of the axle is cracked, the axle must be replaced.Apply
the repair weld according to the information in Sec-
tions 1-3 of the guideline.
Welding Precautions
A) All welds must be kept away from the top and
bottom of the axle where maximum stresses occur.The
"no weld" zones are illustrated in (Figure 14).
B) Do not test weld the arc on any part of the
axle tube. This can cause a material change which can
lead to a small crack that may eventually grow and af-
fect the fatigue lift of the axle.
Figure 15. Alignment of Axle
3" NO WELD
ZONE
4" NO WELD
ZONE
TOP OF
AXLE
1 6450076 BAZOOKA
2 6450077 AXLE EXTENSION SET
AXLE EXTENSION SET SHOWN IN PLACE
SR
SL
LL
LR
SL = SR= ±1/16
LL = LR= ±1/16

19
MAINTENANCE
Figure 16. Hanger Sticker
Alignment Of Axle
The Monopivot 240 is equipped with an eccentric
bolt in one or both hangers for simple, manual align-
ment of axles. (See Figure 16)
For Tandem Axle Trailer
1. Align the forward axle to center of kingpin (see
"A" in Figure 15), then align rear axle to center of for-
wardaxle (see"B" inFigure 15).The measurementfrom
left to right side of axle centers should not exceed 1/8"
difference.
2. To align the axle, loosen the eccentric bolt lock
nut and remove the anti-turn washer from head of ec-
centric bolt.
3. To move the axle forward, rotate the eccentric
bolt arrow toward the front of the trailer. The bolt may
be rotated a maximum of a 1/4 turn from top center.
4. To move the axle rearward, rotate the eccentric
bolt arrow toward the rear of the trailer. The bolt may
be rotated a maximum of a 1/4 turn from top center.
5. After alignment is achieved, re-install anti-turn
washer and weld at positions as shown in figure 15.
Re-torquethe eccentric bolt lock nutto specifiedtorque.
Height Control Valve
Operation (See Figure 17)
As load is applied, the horizontal actuating lever arm
moves from NEUTRAL position to UP (intake) posi-
tion.As load is removed, the horizontal actuating lever
arm moves from NEUTRAL position to DOWN (ex-
haust) position. The valve opens and air is allowed to
exhaust from air springs bringing the horizontal actu-
ating lever arm back to a neutral position. Optimum
performance is achieved when valve is adjusted accu-
rately to the suspension by increasing or decreasing
horizontal lever arm length to a point where valve and
lever arm approach 45º maximum, up or down from
neutral position.
Figure 17. Height Control Valve Asm
Set Up
1. Insert vertical link rod through offset dampener
link. Do not tighten clamp until final adjustment (dis-
cussed in ADJUSTMENT section) is made.
2. Insert horizontal lever arm through 5/16" cap
screw side of insert to desired length. Tighten 5/16"
cap screw to 10 Ft. Lbs.
NOTE: The horizontal actuating lever arm can
be adjusted in length. The recommended length is
7", however a maximum length of 11-1/2" is accept-
able.
A right or left-hand valve can be achieved by simply
rotating the horizontal lever arm 180º.
Adjustment
1. With vehicle on level ground, build and maintain
supply air pressure in excess of 65 P.S.I.
2. Rotate horizontal lever arm DOWN to exhaust
air spring or rotate UP to inflate springs until proper
ride height is achieved. Place lever arm at neutral posi-
tion and insert wood centering pins into valve.
3. Slide vertical link rod through hole in the offset
dampener link. Install vertical link rod grommet to pin
on mounting bracket at axle. Place mounting bracket
on axle and attach. Tighten clamp on offset dampener
link and remove wood centering pins.
4. TEST: Disconnect vertical link rod grommet
from mounting bracket at axle pin. Rotate horizontal
lever arm DOWN to exhaust air springs about half-
way.
45º
90º
(Optimal)
45º
Max
Up
Height Adjustable
at Hose Clamp
Actuating Lever Arm
Max
Down
YOUR SUSPENSION WILL HAVE THIS
LABEL ABOVETHE ECCENTRIC BOLT
NOTICE!
ECCENTRIC BOLT ARROW
MUST BE AT 12 O'CLOCK
POSITION PRIORTO
ALIGNMENT. AFTER
ALIGNMENT INSTALL
ANTI-TURNWASHER OVER
HEAD OF BOLT ANDTORQUE
TO 1,000 FT. LBS.