Landoll 330C User manual

F-475-0611 06/2011
LANDOLL CORPORATION
1900 North Street
Marysville, Kansas 66508
[phone]
800-428-5655 ~ WWW.LANDOLL.COM
Model 330C
Semitrailer
Operator’s Manual

F-475-0611 Edition i
Table of Contents
1 Introduction
Understanding Safety Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
2 Standard Specifications
3 Operating Instructions
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Air Brake System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Anti-Lock Brake System (ABS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Pre-Coupling of Semitrailer and Tractor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Coupling of the Tractor to the Semitrailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Connecting Tractor Services to the Semitrailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Tractor and Semitrailer Check-Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Towing the Semitrailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Parking the Semitrailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Uncoupling Tractor from Semitrailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Trailer Tilt Lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Axle Control Lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Loading Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Securing the Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Unloading the Trailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Winch Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Auxiliary Hydraulic Power Engine Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Bulkheads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
Remote Control (Option) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
Rear Impact Guard System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
Anti-Lock Brake System (ABS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
Cold Weather Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
Hot Weather Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
4 Maintenance and Lubrication

ii F-475-0611 Edition
Maintenance Schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Maintenance Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Tools and Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6
Standard Torque Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Hitch, Frame, and Deck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Repairing Structural Defects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Wood Deck Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6
Hydraulic System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Hydraulic Engine Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Suspension Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Spring Suspension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-10
Air Ride Suspension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Air Ride Height Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
Wheel Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-13
Axle Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
Brake System Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
Spring Air Brake Chamber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
Brake Assembly Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18
Hub and Drum Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-20
Wheel Bearing Lubrication and Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22
Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22
Tire Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23
Tire Inflation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23
Tire Matching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23
Mounting Tire and Wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25
Winches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25
Hydraulic Engine Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25
5 Troubleshooting Guide
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Tires - Wheels - Suspension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Brake Drums . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Hydraulic System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
Hydraulic Power Supply Engine Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Remote Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

1-1
Chapter 1
Introduction
This manual provides operating, servicing, and maintenance instructions for Model 330C semitrailer, manufactured by
Landoll Corporation, Marysville, Kansas 66508.
CHAPTER 1 gives basic instructions on the use of this manual.
CHAPTER 2 gives product specifications for the trailer, including measurements and component
specifications. A Standard Bolt Torque Table is provided to give guidelines for bolt
torques to be used when servicing this product.
CHAPTER 3 gives instructions for the proper operation of the equipment.
CHAPTER 4 gives general maintenance procedures, a maintenance schedule, and a lubrication
schedule. Improper maintenance will void your warranty.
IF YOU HAVE ANY QUESTIONS CONTACT:
LANDOLL CORPORATION
1900 NORTH STREET
MARYSVILLE, KANSAS 66508
or phone:
[phone] or
[phone]
or FAX:
[phone]
CHAPTER 5 is a troubleshooting guide to aid in diagnosing and solving problems with the trailer.
PARTS MANUAL is a separate manual showing the various assemblies, subassemblies, and systems.
Refer to that manual when ordering Landoll replacement parts. Order parts from your
Landoll dealer.
WARRANTY The Warranty Registration form is included with the product documents. Fill it out and
mail it within 15 days of purchase.
NOTE: IMPROPER ASSEMBLY, MODIFICATION, OR MAINTENANCE OF YOUR
LANDOLL MACHINE CAN VOID YOUR WARRANTY.
COMMENTS Address comments or questions regarding this publication to:
LANDOLL CORPORATION
1900 NORTH STREET
MARYSVILLE, KANSAS 66508
ATTENTION: PUBLICATIONS -DEPT. 55

1-2 F-475-0611 Edition
INTRODUCTION
Understanding Safety
Statements
You will find various types of safety information on the
following pages and on the machine signs (decals)
attached to the vehicle. This section explains their
meaning.
The Safety Alert Symbol means ATTENTION! YOUR
SAFETY IS INVOLVED!

DANGER

WARNING

CAUTION
NOTE
Means that failure to follow these instructions could
cause damage to the equipment or cause it to operate
improperly.
NOTE
Make sure you read and understand the information
contained in this manual and on the machine signs
(decals) before you attempt to operate or maintain this
vehicle.
The safety statements contained in this manual relate to
the operation of the Model 330C semitrailer.
Danger means a life-threatening situation exists.
Death can occur if safety measures or
instructions on this label are not properly
followed.
Warning means serious injury or death can occur
if safety measures or instructions on this label
are not properly followed.
Caution means serious equipment or other
property damage can occur if instructions on this
label are not properly followed.

2-1
Chapter 2
Standard Specifications
MODEL 330C
CAPACITY*:
SINGLE AXLE 16,000 LB. DISTR. - 10,000 LB IN 10 FT.
TANDEM AXLE 50,000 LB DISTR. - 20,000 LB. IN 10 FT.
KING PIN SETTING: 30”
18” ON 90º DROP
UNDERCARRIAGE TRAVEL: 10’-6” STANDARD LOAD ANGLE/ 14’-0” LOW LOAD ANGLE
STANDARD LOAD ANGLE: 12º
LOW LOAD ANGLE 48’ (OPTION): 9-1/2º
HYDRAULIC HOOKUP:
QUICK COUPLERS FLAT FACE 3/4” BODY SIZE
MAXIMUM OPERATING
PRESSURE
2500 PSI
OPERATING FLOW 17 GPM
ELECTRICAL HOOKUP: 7-WAY CONNECTOR
AIR HOOKUP: COLOR CODED GLAD HANDS

2-2 F-475-0611 Edition
STANDARD SPECIFICATIONS
SPECIFIC BOLT TORQUES
AIR RIDE SUSPENSION:
EQUALIZER BEAM PIVOT AND ADAPTER BOLTS
DESIGNATED W/ NEWAY ON BOLT HEAD 800 FT.-LBS.
DESIGNATED W/ HOLLAND NEWAY ON
BOLT HEAD
550 FT.-LBS.
SHOCK ABSORBER MOUNTING 150 FT.-LBS.
AIR SPRING MOUNTING:
1/2” 35 FT.-LBS.
3/4” 35 FT.-LBS.
FOUR SPRING SUSPENSION:
AXLE CLAMP U-BOLTS 300 FT.-LBS.
EQUALIZER BEAM PIVOT BOLT 480-500 FT.-LBS.
TORQUE ARM BOLT 250 FT.-LBS.
TORQUE ARM CLAMP NUTS 60 FT.-LBS.
WHEEL FASTENERS - ALL MODELS:
OUTER SPINDLE NUTS 250 - 400 FT.-LBS.
PILOT WHEEL NUTS 450 - 500 FT.-LBS.
* CAPACITY RATINGS ARE FRAME CAPACITIES ONLY. ACTUAL LOAD CAPACITIES MAY BE RESTRICTED BY
FACTORS SUCH AS GROSS AXLE WEIGHT RATINGS (GAWR) OR STATE AND FEDERAL REGULATIONS. TIRE,
BRAKE, AXLE, OR WHEEL SELECTION MAY ALSO LIMIT CAPACITY.

STANDARD SPECIFICATIONS
2-3
Table 2-1: General Torque Specifications
LANDOLL CORPORATION
GENERAL TORQUE SPECIFICATIONS (REV. 4/97)
THIS CHART PROVIDES TIGHTENING TORQUES FOR GENERAL PURPOSE APPLICATIONS WHEN SPECIAL TORQUES ARE NOT SPECIFIED ON PROCESS
OR DRAWING.
ASSEMBLY TORQUES APPLY TO PLATED NUTS AND CAPSCREWS ASSEMBLED WITHOUT SUPPLEMENTAL LUBRICATION (AS RECEIVED CONDITION). THEY
DO NOT APPLY IF SPECIAL GRAPHITE MOLY-DISULFIDE OR OTHER EXTREME PRESSURE LUBRICANTS ARE USED.
WHEN FASTENERS ARE DRY (SOLVENT CLEANED), ADD 33% TO AS RECEIVED CONDITION TORQUE.
BOLT HEAD IDENTIFICATION MARKS INDICATE GRADE AND MAY VARY FROM MANUFACTURER TO MANUFACTURER.
THICK NUTS MUST BE USED ON GRADE 8 CAPSCREWS.
USE VALUE IN [ ] IF USING PREVAILING TORQUE NUTS.
TORQUE IS SPECIFIED IN FOOT POUNDS
UNC
Size
SAE Grade
2
SAE Grade
5
SAE Grade
8
UNF
Size
SAE Grade
2
SAE Grade
5
SAE Grade
8
1/4-20 4 [5] 6 [7] 9 [11] 1/4-28 5 [6] 7 [9] 10 [12]
5/16-18 8 [10] 13 [16] 18 [22] 5/16-24 9 [11] 14 [17] 20 [25]
3/8-16 15 [19] 23 [29] 35 [43] 3/8-24 17 [21] 25 [31] 35 [44]
7/16-14 24 [30] 35 [43] 55 [62] 7/16-20 27 [34] 40 [50] 60 [75]
1/2-13 35 [43] 55 [62] 80 [100] 1/2-20 40 [50] 65 [81] 90 [112]
9/16-12 55 [62] 80 [100] 110 [137] 9/16-18 60 [75] 90 [112] 130 [162]
5/8-11 75 [94] 110 [137] 170 [212] 5/8-18 85 [106] 130 [162] 180 [225]
3/4-10 130 [162] 200 [250] 280 [350] 3/4-16 150 [188] 220 [275] 320 [400]
7/8-9 125 [156] 320 [400] 460 [575] 7/8-14 140 [175] 360 [450] 500 [625]
1-8 190 [237] 408 [506] 680 [850] 1-14 210 [263] 540 [675] 760 [950]
1-1/8-7 270 [337] 600 [750] 960 [1200] 1-1/8-12 300 [375] 660 [825] 1080 [1350]
1-1/4-7 380 [475] 840 [1050] 1426 [1782] 1-1/4-12 420 [525] 920 [1150] 1500 [1875]
1-3/8-6 490 [612] 110 [1375] 1780 [2225] 1-3/8-12 560 [700] 1260 [1575] 2010 [2512]
1-1/2-6 650 [812] 1460 [1825] 2360 [2950] 1-1/2-12 730 [912] 1640 [2050] 2660 [3325]
1-3/4-5 736 [920] 1651 [2063] 2678 [3347] 1-3/4-12 920 [1150] 2063 [2579] 3347 [4183]
METRIC
COARSE THREAD METRIC CLASS 10.9 FASTENERS AND CLASS 10.0 NUTS AND THROUGH HARDENED FLAT WASHERS, PHOSPHATE COATED, ROCKWELL
“C” 38-45.
USE VALUE IN [ ] IF USING PREVAILING TORQUE NUTS.
Nominal
Thread
Diameter
mm
Standard Torque Nominal
Thread
Diameter
mm
Standard Torque
Newton-
Meters
Foot-
Pounds
Newton-
Meters
Foot-
Pounds
6 10 [14] 7 [10] 20 385 [450] 290 [335]
7 16 [22] 12 [16] 24 670 [775] 500 [625]
8 23 [32] 17 [24] 27 980 [1105] 730 [825]
10 46 [60] 34 [47] 30 1330 [1470] 990 [1090]
12 80 [101] 60 [75] 33 1790 [1950] 1340 [1450]
14 125 [155] 90 [115] 36 2325 [2515] 1730 [1870]
16 200 [240] 150 [180] 39 3010 [3210] 2240 [2380]
18 275 [330] 205 [245]

2-4 F-475-0611 Edition
STANDARD SPECIFICATIONS
Table 2-2: Hydraulic Fitting Torque Specifications
LANDOLL CORPORATION
HYDRAULIC FITTING TORQUE SPECIFICATIONS
37oJIC, ORS, & ORB (REV. 10/97)
THIS CHART PROVIDES TIGHTENING TORQUES FOR HYDRAULIC FITTING APPLICATIONS WHEN SPECIAL TORQUES ARE NOT SPECIFIED ON PROCESS
OR DRAWING.
ASSEMBLY TORQUES APPLY TO PLATED CARBON STEEL AND STAINLESS STEEL FITTINGS ASSEMBLED WITHOUT SUPPLEMENTAL LUBRICATION (AS
RECEIVED CONDITION).THEY DO NOT APPLY IF SPECIAL GRAPHITE MOLY-DISULFIDE OR OTHER EXTREME PRESSURE LUBRICANTS ARE USED.
BRASS FITTINGS AND ADAPTERS - 65% OF THE TORQUE VALUE FOR STEEL. STAINLESS STEEL, ALUMINUM AND MONEL - THREADS ARE TO BE
LUBRICATED.
TORQUE IS SPECIFIED IN FOOT POUNDS
PARKER BRAND FITTINGS
Dash Size 37 Degree JIC O-Ring (ORS) O-Ring Boss (ORB)
-4 11-13 15-17 13-15
-5 14-16 — 21-23
-6 20-22 34-36 25-29
-8 43-47 58-62 40-44
-10 55-65 100-110 57.5-62.5
-12 80-90 134-146 75-85
-16 115-125 202-218 109-121
-20 160-180 248-272 213-237
-24 185-215 303-327 238-262
-32 250-290 — 310-340
GATES BRAND FITTINGS
Dash Size 37 Degree JIC O-Ring (ORS) O-Ring Boss (ORB)
-4 10-11 10-12 14-16
-5 13-15 — —
-6 17-19 18-20 24-26
-8 34-38 32-40 37-44
-10 50-56 46-56 50-60
-12 70-78 65-80 75-83
-14 — 65-80 —
-16 94-104 92-105 111-125
-20 124-138 125-140 133-152
-24 156-173 150-180 156-184
-32 219-243 — —
AEROQUIP BRAND FITTINGS
Dash Size 37 Degree JIC O-Ring (ORS) O-Ring Boss (ORB)
-4 11-12 10-12 14-16
-5 15-16 — 18-20
-6 18-20 18-20 24-26
-8 38-42 32-35 50-60
-10 57-62 46-50 72-80
-12 79-87 65-70 125-135
-14 — — 160-180
-16 108-113 92-100 200-220
-20 127-133 125-140 210-280
-24 158-167 150-165 270-360
-32 245-258 — —

3-1
Chapter 3
Operating Instructions
General
This section supplies information for operation of the
trailer. It describes and locates controls and gives general
operation procedures. Read all instructions, warnings,
cautions and danger notes before attempting to operate
the trailer. Operators must have proper training before
operating the semitrailer.
A hydraulic pump must be coupled to the trailer hydraulic
system, or the optional hydraulic engine package started,
before using hydraulic controls.

WARNING

WARNING
Air Brake System
The air brake system of the trailer is operated from the
towing vehicle after coupling. The towing vehicle’s air
system must be coupled to the trailer and charged to 90
psi minimum before the brakes can adequately function.
Anti-Lock Brake System (ABS)
The Anti-Lock Brake System of the semitrailer is constant
powered by the auxiliary (blue) circuit of the seven way
electrical connector, with backup power from the stop
lamp (red) circuit, and ground through the white wire. It is
necessary that the blue circuit is hot when the tractor key
switch is on. The blue circuit on the trailer may also not
be used to power any additional auxiliary devices while
the semitrailer is moving forward. If a fault exists in the
ABS, normal braking will occur, but the wheels may lock.
Service the ABS as soon as possible.

CAUTION

CAUTION
Do not operate the semitrailer with any known
fault that might endanger the occupants, nearby
workers, other traffic, the load, or the equipment.
Do not operate the semitrailer until you have read
the operator’s manual and completely understand
the proper use and function of all controls.
Improper use can cause personal injury, damage
to your semitrailer and cargo, and cause
time-consuming breakdowns.
The auxiliary (blue) circuit is for powering the
semitrailer ABS. This circuit must be hot when
the tractor key switch is on. No other electrical
devices may be powered by this circuit while the
semitrailer is moving forward.
If a fault exists in the semitrailer ABS, normal
braking will occur, but wheels may lock. Service
the ABS as soon as possible.

3-2 F-475-0611 Edition
OPERATING INSTRUCTIONS
Pre-Coupling of Semitrailer and
Tractor
1. Slowly back the tractor up to the front end of the
semitrailer so the kingpin of the semitrailer is
centered between the tractor fifth wheel jaws. Stop
the tractor several inches ahead of the semitrailer.
Set tractor parking brake.
2. The king pin plate should be the same height as, or
slightly lower than, the latch area of the fifth wheel
plate of the tractor. If necessary, connect the tractor
hydraulic lines or start the trailer hydraulic power
engine. Use the TRAILER TILT lever to raise or lower
the kingpin plate sufficiently to allow proper coupling
(See Figure 3-2.) Drain all air and moisture from the
tractor air brake system in accordance with the
tractor manufacturer’s instructions.
3. Connect the service and emergency air hoses of the
tractor to their respective gladhand on the front of the
semitrailer. The tractor’s air hose couplings are then
attached and locked to the appropriate gladhands;
the red emergency line to the gladhand with the
“EMERGENCY” tag, and the blue service line to
the gladhand with the “SERVICE” tag (See
Figure 3-1.) Chock the semitrailer wheels before
activating the semitrailer air supply valve in the
tractor. Set the semitrailer brakes.
4. Check the air brake operations of the semitrailer as
follows:
a. Apply brakes and inspect brake action on all
wheels for prompt application.
b. Release brakes. All brakes should release
immediately. Air pressure should discharge
quickly from the relay emergency valve.
c. Disconnect the emergency air line from the
semitrailer gladhand. Semitrailer brakes should
promptly set.
d. Reconnect the emergency air line to the
semitrailer and activate the semitrailer air supply
valve. The semitrailer brakes should set.
Coupling of the Tractor to the
Semitrailer

DANGER
1. Verify the semitrailer wheels are chocked and brakes
function properly.
2. Make sure the tractor’s fifth wheel coupler is open.
3. Slowly back the tractor so its fifth wheel contacts the
front of the kingpin plate on the semitrailer and slips
under it. Continue backing until the fifth wheel
coupler locks onto the semitrailer kingpin.
4. Try to pull the tractor forward a few inches to verify
the vehicle coupling is secure. If the tractor
disconnects from the semitrailer: locate the source of
the coupling failure; repair before continuing; and
repeat steps 3 and 4.

CAUTION
5. Check that the tractor couples securely to the
semitrailer before setting tractor and semitrailer
parking brakes.
IMPORTANT
Keep brakes engaged for remainder of coupling,
check-out, and parking.
Keep all personnel clear of front, rear, and sides
of tractor and semitrailer during coupling,
component operations, and uncoupling. Failure
to stay clear can result in serious personal injury
or death.
Pushing semitrailer backwards can damage
landing gear.

OPERATING INSTRUCTIONS
3-3
Connecting Tractor Services to
the Semitrailer
1. Connect the tractor 7-way electrical plug to the
electrical receptacle on the front of the semitrailer
(See Figure 3-1.)
IMPORTANT
The key on the plug and the keyway in the socket
must be properly aligned before inserting the plug
into the semitrailer socket.
2. If you have not already done so, connect the tractor
hydraulic lines to the semitrailer, unless your
semitrailer is equipped with the auxiliary hydraulic
power engine package.
IMPORTANT
Some oil may need to be removed from the tractor
reservoir to allow room for 12 gallons of additional
oil displaced from the semitrailer hydraulic system.
Tractor and Semitrailer
Check-Out
1. While hydraulic power is operating, raise the front
end of the semitrailer with the TRAILER TILT lever
until weight is off the landing gear (See Figure 3-2.)
Raise landing gear. If pin drop leg, secure each leg
with a retaining pin in fully retracted position before
transporting.
Figure 3-1: Service Hookups (Front View)

WARNING
2. Lower the front end with the TRAILER TILT lever
until the semitrailer is fully lowered. Hold lever in the
down position until hydraulic system works against
the bottomed out hydraulic tilt cylinders.
3. Verify that the traveling undercarriage is completely
slid back to transport position. Shut off hydraulic
power.
4. Check the operation of all lights and signals on the
semitrailer for proper response to switch positions
(stop, right turn, left turn and clearance).
5. Check that tire inflation matches the pressure listed
on the tire.
6. Check tractor/semitrailer combination for air leaks. If
air leakage is found, repair the defect before
transporting.
7. Check that the oil in each hub is at the proper level
and free from contamination. If hubs contain water,
dirt, or other foreign matter, clean them before
transporting.
8. Check tractor air pressure. Pressure must not fall
below 65 psi, even after activating brakes a couple of
times. Set parking brake and carefully remove all
wheel chocks. Set emergency brake and try pulling
forward. The semitrailer wheels must not rotate. If
semitrailer brakes do not apply, do not transport until
defect, or defects, are repaired.
Figure 3-2: Hydraulic Control Levers
HYDRAULIC
HOOKUPS
SERVICE
AIR HOOKUP
ELECTRICAL
HOOKUP
EMERGENCY
AIR HOOKUP
service
Landing gear legs must be fully retracted and
secured with pins before operating or moving
semitrailer.
HYDRAULIC
CONTROL
LEVERS
hydcont

3-4 F-475-0611 Edition
OPERATING INSTRUCTIONS
Towing the Semitrailer
1. Driving the tractor with the semitrailer coupled behind
requires constant attention to the overall length.
Turning, passing, accelerating, braking, stopping,
and back-up require special considerations. When
executing steep grades or turning tight curves, the
semitrailer must not be allowed to push the tractor, or
jackknifing may result. Application of the semitrailer
brakes to keep the semitrailer in tow will help prevent
this situation. To assure control, brake before
descending a hill or attempting a curve.
2. Make a moving test of the semitrailer brakes at low
and medium speeds before traveling at highway
speed.
a. The Anti-Lock Brake System (ABS) warning
lamp mounted at left rear side of the trailer
should come on when power is supplied to the
ABS by turning the tractor keyswitch on. The
warning lamp should go off once the trailer
exceeds 4 mph. If the warning lamp does not go
off, a fault exists in the trailer ABS. Once the
vehicle speed exceeds 4 mph, the light should
remain off unless a fault occurs or the keyswitch
is turned off, then on again.
3. Monitor the air pressure gauge on the dash of the
tractor. Pressure should not fall below 90 psi at any
time.

CAUTION
4. The semitrailer wheels track to the inside of the
tractor during turns. Thus, turning corners requires a
wide swing to prevent “curb hopping”, and to allow
the semitrailer wheels to clear any obstacle on the
inside of the corner.
5. To stop, use a gradual and smooth application of
brakes. If grabbing occurs, apply less pressure.
Grabbing brakes are not efficient.

DANGER
6. Backing should be done with care. Tail overhang,
semitrailer length, and allowable space must be
taken into consideration.
When operating trailer, do not back over curb.
This will cause severe damage to undercarriage
and undercarriage cylinder.
Always check behind and under the tractor and
semitrailer for persons or objects before moving.
Failure to check can lead to serious personal
injury, death, or damage to property.

OPERATING INSTRUCTIONS
3-5
Parking the Semitrailer
1. Position tractor/trailer rig on a level, solid surface.
2. Set the PARKING BRAKE, not the semitrailer
emergency hand brake, and check for proper brake
holding.
3. Chock wheels.
4. Check for any air leaks in lines, relay valve, brake
pods, or any other air system component.

WARNING
Uncoupling Tractor from
Semitrailer
1. Park the semitrailer according to instructions in
“Parking the Semitrailer” on page 3-5.
2. Lower landing gear to the ground. If pin drop legs,
hydraulically raise the front end of the semitrailer until
the next hole in the landing gear is available. Insert
pin through both inner and outer legs of the landing
gear. Hydraulically lower semitrailer onto the legs.

WARNING
3. Pull the tractor fifth wheel plate latch release.
4. Disconnect emergency and service air lines and
attach them to the tractor gladhand holders.
5. Disconnect the 7-way cable and hydraulic lines from
the semitrailer and store with the tractor.
6. Attempt to pull the tractor forward. If the tractor
uncouples, verify that all service lines are
disconnected and semitrailer wheels are chocked. If
tractor does not disconnect, repeat steps 5 and 6.
7. Pull the tractor away from the semitrailer.
When leaving the semitrailer unattended,
position all hydraulic controls to the neutral or
“off” position and shut off the hydraulic engine
power supply, or disconnect the tractor hydraulic
hook-up.
If pin drop legs, secure each leg with pin before
leaving semitrailer unattended.

3-6 F-475-0611 Edition
OPERATING INSTRUCTIONS
Trailer Tilt Lever
The TRAILER TILT lever is located on the driver’s side of
the semitrailer under the outer frame beam (See
Figure 3-2.) It has three positions:
Axle Control Lever
The AXLE CONTROL lever is the control on the rear with
three positions (See Figure 3-2.):
Loading Procedure
1. Practice all standard industrial safety standards (See
Figure 3-3.) Do not load any payload that will
overload any component of the semitrailer or cause
any unsafe condition.
2. Proper operation requires that the undercarriage be
pulled fully forward to create lowest low load angle.
3. Park the tractor/semitrailer in a straight line on level
even surface. Set the tractor brakes and release the
semitrailer brakes (See Figure 3-3.)
4. Start operation of hydraulic power system. If the
hydraulic engine package is installed, start and warm
up engine following engine operating instructions in
“Auxiliary Hydraulic Power Engine Operation” on
page 3-11 (Read engine operator’s manual.)
5. Alternate between moving the undercarriage forward
and tilting the front of the bed up until the
undercarriage is fully forward and the approach plate
is on the ground. The weight of the semitrailer bed
should rest partly on approach plate and partly on
undercarriage. The object is to have the approach
plate resting on the ground whenever the center of
gravity of the semitrailer and load is behind the rear
axle of semitrailer. In loading position, the approach
plate should be resting on the ground and the
undercarriage fully forward.

CAUTION

WARNING

WARNING
UP In this position, the front end of the
semitrailer rises to the load position.
CENTER This is the neutral position. The
semitrailer stays in its current position.
DOWN In this position, the front end of the
semitrailer lowers to the transport
position.
UP In this position, the undercarriage
slides forward for loading.
CENTER This is the neutral position.
DOWN In this position, the undercarriage
slides to the rear. The undercarriage
must be in the rear-most position for
transport.
Do not allow the back semitrailer axle to leave the
ground. this can result in damage to the
semitrailer.
In loading or unloading position, the approach
plate should be resting on the ground and the
undercarriage fully forward.
Always use low load angle to load and unload
powered products.

OPERATING INSTRUCTIONS
3-7
6. Winch or drive the load onto the semitrailer. Insure
that the load is steering straight up onto the
semitrailer and does not maneuver off the side of the
semitrailer. Continue until load center of gravity is just
ahead of the axles. The load should never place
more weight on the kingpin than on the rear axles
during loading and unloading.

CAUTION

WARNING

WARNING
7. Securely tie down the load and attach the winch
cable to the front of the load, if it is not already
attached. Reel in winch cable until it becomes tight.
(Winch cable serves as a safety tiedown in case load
tiedown fails but is not to replace tie downs.)
8. If the load center of gravity is not ahead of the rear
axle, alternate between tilting the front of the bed up
and moving the undercarriage to the rear, until the
center of gravity of the semitrailer load is in front of
the rear axle. Keep part of the load on the wheels
and part on the approach plate. Never move the
undercarriage so far to the rear that the approach
plate is lifted off the ground during this procedure.
9. When the center of gravity of the semitrailer and load
is in front of the rear axle, fully lower the tilt angle.
10. After bed tilt angle is fully lowered, move the
undercarriage to the rear until it is in transport
position. Hold TRAILER TILT lever in the down
position until hydraulic system works against the
bottomed out Hydraulic Tilt Cylinders. Hold AXLE
CONTROL lever in the transport position until
hydraulic system works against the fully extended
hydraulic axle cylinder.
11. If necessary, unsecure the load, move load slightly
forward or rearward on the load bed to get correct
weight distribution on kingpin and the semitrailer
axles, and resecure the load with the tiedowns and
winch cable.
12. Shut down the auxiliary hydraulic power engine
following operating instructions in “Auxiliary
Hydraulic Power Engine Operation” on
page 3-11.
13. Recheck that the load is properly secured. Assure
maintenance schedule is up-to-date and semitrailer
is ready to be pulled.
Securing the Load

WARNING
1. All items of the semitrailer load must be securely tied
to the deck, front and rear to the semitrailer frame.
The load must be tied with chain or straps sufficient
to withstand the weight of the load using standard
approved tiedown methods.
2. No slack is allowed in the tie down chains or straps.
Use binders with chains or a ratchet type buckle on
straps to eliminate any slack in the tiedowns.
IMPORTANT
More information about cargo securement may be
found at
http://www.fmcsa.dot.gov/cargosecurement.pdf.
remember that regulations vary from state to state.
For state regulations, see
http://www.fhwa.dot.gov/webstate.htm.
Maximum concentrated load is 10,000 lbs. in a 10
ft. area for a single axle semitrailer and 20,000
lbs. in a 10 ft. area for a tandem axle semitrailer.
1. The semitrailer must be coupled to a tractor
and the landing gear raised off the ground
before operating.
2. Do not exceed the gross axle weight ratings
for any axle on your vehicle. The combined
weight of the semitrailer and cargo must not
exceed the gross vehicle weight rating
(GVWR) of the trailer.
The center of gravity of the load must be in front
of the center of the undercarriage whenever the
approach plate is not supported by the ground.
Failure to do this can cause the semitrailer to tilt
back resulting in injury or death.
Do not allow slack in tiedowns. A shifting load
may create enough momentum to break hi-test
chains or strap ties. Slack in tiedowns may result
in damage to the load, and death or serious injury
to persons near the load.

3-8 F-475-0611 Edition
OPERATING INSTRUCTIONS
Figure 3-3: Steps for Loading and Unloading
LOADING
UNLOADING
WARNING: ALWAYS USE
LOW LOAD ANGLE TO LOAD
AND UNLOAD POWERED
PRODUCTS.
WARNING: CENTER OF
GRAVITY OF LOAD MUST
REMAIN AHEAD OF
SUSPENSION CENTER WHEN
APPROACH PLATE IS NOT
SUPPORTED BY GROUND.
CAUTION: DO NOT
ALLOW BACK AXLE TO
LEAVE THE GROUND.
3ma410-011503

OPERATING INSTRUCTIONS
3-9
Unloading the Trailer

WARNING

WARNING
1. Practice all standard industrial safety standards (See
Figure 3-3.)
2. Park towing vehicle and trailer on relatively level
ground.
3. Set towing vehicle’s brakes.
4. Engage the P.T.O. or start the hydraulic power
engine.
5. Move undercarriage forward five to eight feet.
6. Alternate between raising the trailer and pulling the
axles forward until the approach plate touches the
ground. Never pull the axles forward so far that
center of gravity of the load and trailer are behind the
rear axle of the trailer unless the approach plate is on
the ground. Always use low load angle to unload
powered products. To achieve low load angle, the
undercarriage has to be all the way forward. The
object is to keep a part of the weight on the approach
plate, and part of the weight on the wheels while
lowering the tilt angle. The maximum load angle is
only intended, if required, for unloading non-powered
products and to transfer load to tractor. Transfer load
to tractor by raising deck and moving axles toward
rear until load is forward of the rear axle, thus
transferring load to tractor.
7. If load is non-powered, insure that the winch cable is
firmly attached to the load and tension is on the
cable. Tilt trailer according to step 6. With winch
cable firmly attached to load, remove other load
securing devices. Use the winch to assist the load
down to the end of the approach plate. With end of
load resting on the ground, block load from rolling or
sliding, if necessary. Disconnect the winch and move
the trailer from under the load, allowing the load to
move off trailer to the ground.

WARNING
8. If load is powered, tilt trailer according to step 6.
Make sure the trailer tilt is at the lowest load angle.
Remove safety secure devices. Take tension off
winch cable and remove winch cable. Power load off
the trailer.
9. Before returning the trailer to transport position,
insure that there is sufficient distance between the
load and the rear of the trailer so that the trailer does
not hit the load when being folded back to transport
position.

CAUTION
10. Tilt the bed down and move undercarriage rearward
to transport position. Hold TRAILER TILT lever in the
down position until hydraulic system works against
the bottomed out Hydraulic Tilt Cylinders. Hold AXLE
CONTROL lever in the transport position until
hydraulic system works against the fully extended
hydraulic axle cylinder.
11. Reel in winch cable and secure hook.
12. Disengage the P.T.O. system of tractor or shut off the
hydraulic power engine.
Never tilt the trailer without the load properly
restrained. Failure to do so may result in the load
moving resulting in serious personal injury,
death, or damage to property in it’s path.
Do not pull the rear axle of trailer farther forward
than the center of gravity of the payload when
rear approach plate is off the ground. Failure to
operate correctly can allow front of trailer to go
up and pull towing truck off the ground resulting
in serious personal injury, death, or damage to
property in its path.
When removing load, insure that the load is
steering straight so it does not maneuver off the
side of the trailer. Failure to do so could result in
damage to equipment, injury, or death.
Before returning the trailer to transport position,
insure that there is sufficient distance between
the load and the rear of the trailer. Failure to do so
may result in damage to the trailer and/or load.

3-10 F-475-0611 Edition
OPERATING INSTRUCTIONS
Winch Controls

DANGER
1. The WINCH CLUTCH is on the curbside of the winch
assembly. It engages or disengages the winch.
a. The 12,000# winch clutch handle must be pulled
out to change positions and pushed in to lock
into one of two positions (See Figure 3-4.):
Figure 3-4: 12,000# Winch Clutch
1. The winch is not designed or intended to be
used for lifting or moving people. Using it this
way can cause serious injury or death.
2. Never attempt to disengage the winch cable
spool when the cable is under tension. Loss
of load control, property damage, injury or
death can result.
3. Failure to leave at least five winch cable
wraps on the winch cable spool could allow
the cable to come off the spool, resulting in
serious personal injury or death.
DOWN This position, the winch is disengaged
and the cable can “free-wheel”.
UP In this position, the winch is engaged
and the cable can be “power” spooled
in or out. The winch is now controlled
by the WINCH hydraulic lever.
ENGAGE
DISENGAGE
PULL
clutch12