RoadHog RH1850 User manual

MANUAL
 Operation
 Maintenance
 Service
 Parts
 Warranty
RH1850
RH2450
Serial number ___________________________
Date released for shipment _________________
RoadHog, Inc. 877-640-9975 www.roadhog-inc.com
PUBLICATION DATE: 10/11/11

2
INTRODUCTION
Thank you for your investment in a RoadHog, Inc. attachment. We are confident that
you will find that the RoadHog is the easiest to operate, safest, most durable, and most
efficient milling attachment on the market.
This manual contains the operating instructions and safety information for your
RoadHog. This manual can provide you with assistance in maintenance procedures to
keep your RoadHog performing at maximum efficiency.
Before operating your RoadHog, please read the information in this manual.
Throughout this manual, information is provided in boxes and highlighted by the word
IMPORTANT. This information should be read carefully. If complied with, it will improve
the operating efficiency of the unit and minimize costly breakdowns and extend the life
of the machine.
This warning symbol appears throughout this manual and
indicates that a safety hazard may exist if the information
given is not properly followed. When the warning signal is
encountered in the manual or on the unit, Be Alert! Your
personal safety is involved!
For more copies of this manual or the necessary safety decals, contact your RoadHog
dealer.

3
TABLE OF CONTENTS
Page
Section 1– General Information
1.1 Introduction ····································································································4
1.2 Direction Reference··························································································4
1.3 Servicing the Engine and Drive Train Components··················································4
Section 2– Safety
2.1 General ·········································································································5
2.2 Safety Decals ·································································································6
2.3 Call Before You Dig··························································································7
2.4 Mandatory Shutdown procedure ·········································································7
2.5 Attaching Unit ·································································································8
2.6 Starter Interlock System ····················································································8
Section 3 Operating Instructions
3.1 General ·········································································································9
3.2 Attaching to Loader ··························································································9
3.3 Dual Controls ··································································································9
3.4 Basic Operation·······························································································9
3.5 Maximizing Production ···················································································· 10
3.6 Edge of Cut Indicators ····················································································10
Section 4 Maintenance
4.1 General ·······································································································11
4.2 Cutting Drum Maintenance ··········································································11-13
4.3 Roadhog Lubrication (excluding Engine) ····························································· 14
4.4 Belt Tensioning ····························································································· 14
4.5 Engine Maintenance·······················································································16
4.6 Hydraulic System··························································································· 16
4.7 Welding Precautions·······················································································16
4.8 Starter Interlock (proximity switch) ····································································· 16
4.9 Maintenance Checklist ···················································································· 17
Section 5. Parts Information
5.1 Chassis Parts ···························································································19-21
5.2 Drive Train Parts························································································22-23
5.3 Attach Parts······························································································24-25
5.4 Engine Parts ·····························································································26-28
5.5 Electrical Group & Electrical Schematic ··························································29-34
5.6 Hydraulic Group and Hydraulic Schematic·······················································35-39
5.7 Fuel Tank Parts·····························································································40
5.7 Decal Group ·····························································································41-42
Section 6. Specifications & Warranty Information
6.1 Warranty······································································································43
6.2 Warranty Claim Form······················································································ 44
6.3 New Machine Delivery Report ·········································································· 45
6.4 Owner Information Card ·················································································· 46

4
1.1 INTRODUCTION
Your Roadhog is equipped with high performance, heavy duty components. To ensure that these com-
ponents operate properly and effectively, this manual must be followed. If any question regarding the
operation or performance of this attachment exists, contact your RoadHog dealer.
This manual contains safety instructions, guidelines for efficient operation, troubleshooting tips, and ser-
vice maintenance procedures.
1.2 DIRECTION REFERENCE
When applicable, the terms “right” and “left” are referenced from the operator’s seat, facing forward in
the loader.
1.3 SERVICING THE ENGINE AND DRIVETRAIN COMPONENTS
Detailed servicing and repair of the engine, is not covered in this manual. An engine manual is included
with the Roadhog. Contact your RoadHog dealer for information on repairing the engine..
Detailed repair of the drive train components such as hydraulic pumps, and gearboxes is not covered in
this manual. Contact your RoadHog dealer for information about repairing these components during the
warranty period.
Any unauthorized work performed on these components during the warranty period may void your war-
ranty.

5
THE FOLLOWING PRECAUTIONS
MUST BE OBSERVED FOR THE
SAFETY OF THE OPERATOR
AND/OR SERVICE PERSONNEL.
NEVER CRAWL UNDER RAISED
LOADER ARMS OR RAISED ATTACH-
MENT
NEVER USE YOUR HANDS AS
ESCAPING FLUID UNDER PRESSURE
CAN PENETRATE THE SKIN CAUS-
ING SERIOUS INJURY. IF HYDRAULIC
FLUID DOES PENETRATE THE SKIN,
SEEK IMMEDIATE MEDICAL
ATTENTION BY A DOCTOR FAMILIAR
WITH THIS TYPE OF INJURY OR
GANGRENE MAY RESULT.
NEVER ALLOW HANDS OR FEET
NEAR ANY WORKING PART OF THE
ATTACHMENT UNLESS THE
MANDATORY SAFETY SHUTDOWN
PROCEDURE HAS BEEN
COMPLETED.
WARNING
WARNING
WARNING
WARNING
7. Carefully inspect all hydraulic hoses and con-
nections on a routine basis; Always use a
piece of cardboard when searching for leaks.
8. Always follow the MANDATORY SAFETY
SHUTDOWN procedure, before proceeding
with any work on the attachment.
9. Exposed moving parts are guarded whenever
possible for safety. However, not all moving
parts can be shielded in order to ensure prop-
er operation. Keep hands and feet away
during operation. Do not operate unit with
any guard or shield removed.
10. This operator’s manual and safety decals on
the machine provide important safety infor-
mation. If safety decals become difficult to
read, replace them immediately. (see “2.2
SAFETY DECALS”).
2.1 GENERAL SAFETY
 A careful operator is the best protection
against accidents. Most accidents involving
operators of industrial equipment are caused
by failure to observe basic safety precautions.
Know the equipment and worksite before you
operate. Familiarize yourself with the safety
precautions listed below.
 RoadHog makes operator safety a priority
when designing machinery. Exposed moving
parts are guarded whenever possible for
safety. However, not all moving parts can be
shielded in order to ensure proper operation.
 This operator’s manual and safety decals on
the machine provide important safety infor-
mation when observed closely If safety de-
cals become difficult to read, replace them
immediately. (see “Safety Decals”).
Familiarize yourself with the safety precautions
listed below.
1. Read and observe all safety information and
decals on the loader and attachment BE-
FORE operating the unit!
2. Refer to the SAFETY section of your loaders
operator’s manual and observe all safety rec-
ommendations set forth in the manual.
3. Exercise extreme caution when attaching and
removing the attachment, operating with oth-
er workers present, and servicing the unit.
4. When loading, keep attachment as low to
ramps & trailer as possible.
5. Always lower the loader arms fully before
leaving the operator’s seat.
6. Be sure to raise the attachment totally off the
ground before side shifting.

6
2.2 SAFETY DECALS
The safety decals existing on the attachment
should be clearly readable and always followed.
The location and description of the decals is
shown in the parts diagram.
The CRUSHING HAZARD decal warns the oper-
ator and bystanders to stay away during opera-
tion.
The ROTATING CUTTER decal warns the opera-
tor and bystanders to stay away during operation.
The READ MANUAL decal warns the operator to
read this manual before operating the attach-
The INJECTION HAZARD decal warns the oper-
ator and bystanders to stay away during opera-
tion.
The FLYING OBJECTS decal warns the operator
the operator and bystanders to stay away during
operation.
The NO STEP/ HOT SURFACE decal warns the
operator and bystanders to not step near decal
and to not touch during operation.
This ROTATING CUTTER decal warns the oper-
ator to stay away during operation and that the
drum turns whenever the engine is running.

7
2.3 CALL BEFORE YOU DIG
ACCIDENTS ARE
PREVENTABLE WITH YOUR HELP
Understand and comply with applicable laws and
regulations.
 Call local utilities before you dig.
1-888-258-0808
 Know the location of underground gas, water
and electrical lines.
 Inspect area for holes, drop-offs, or unstable
ground.
 Know the weight limitations of operating
surfaces and clearances.
 Remember: Safe operation begins with the
operator.
BEFORE OPERATING THIS
EQUIPMENT, THE FOLLOWING
SAFETY INFORMATION SHOULD BE
READ AND UNDERSTOOD. IN
ADDITION, EACH INDIVIDUAL
WORKING WITH THE EQUIPMENT
SHOULD BE FAMILIAR WITH THE
SAFETY PRECAUTIONS
2.4 MANDATORY SAFETY SHUT-
DOWN PROCEDURE
BEFORE cleaning, adjusting, lubricating, or ser-
vicing this unit, ALWAYS follow the MANDATO-
RY SAFETY SHUTDOWN PROCEDURE:
1. Lower loader arms and roll attachment for-
ward until it is flat on the ground.
2. Apply loader parking brake and stop the
loader engine.
3. Remove loader key and keep with you while
working on the attachment.
4. Turn cold planer engine off and remove key
and keep with you while working on attach-
ment.
FAILURE TO FOLLOW THE
PROCEDURES BEFORE CLEANING,
ADJUSTING, LUBRICATING, OR
SERVICING THIS UNIT COULD LEAD
TO SERIOUS INJURY OR DEATH.
WARNING
WARNING

8
2.5 ATTACHING TO LOADER
 Read and observe all safety information and
decals on the skid steer loader and attach-
ment BEFORE operating the unit!
 Refer to the SAFETY section of your skid
loaders operator’s manual and observe all
safety recommendations set forth in the man-
ual.
 After attaching planer, inspect engagement of
loader pins before raising unit
 Always lower the loader arms fully before
leaving the skid steer seat.
FAILURE TO FOLLOW THE PROCE-
DURES BEFORE OPERATING OR
SERVICING THIS UNIT COULD LEAD
TO SERIOUS INJURY OR DEATH.
WARNING
2.6 STARTER INTERLOCK SYSTEM
 This RoadHog does not have a clutch,
therefore the drum turns when the engine
is cranking or running.
 This RoadHog is equipped with a starter in-
terlock system. The system is designed to
prevent the engine from starting if the unit is
not attached to a loader and / or not lifted off
of the ground.
 Never wire or “jump” around, or disable this
system.
 Inspect system periodically to ensure the
ski within this system is free to move up
and down. See photo below of this im-
portant feature.
 The starter interlock skid pivot has a grease
zerk. This zerk is located on the starter inter-
lock ski, located on the left rear of the
RoadHog, below the fuel tank. This zerk
should be greased once a week or every 40
hours of operation.
FAILURE TO FOLLOW THE PROCE-
DURES BEFORE OPERATING OR
SERVICING THIS UNIT COULD LEAD
TO SERIOUS INJURY OR DEATH.
WARNING

9
3.1 OPERATION-GENERAL
 The Roadhog is an engine powered attach-
ment intended for cutting asphalt or concrete
surfaces. The performance of the attachment
can vary greatly depending upon how it is
used and operated. Therefore, the recom-
mended operating procedures contained
within this manual should be followed at all
times for maximum productivity.
 Prior to operating the attachment, read this
entire manual.
 Follow all safety guidelines in this manual and
safety decals on the unit.
 Make sure that all guards, shields, and decals
are in place and in good condition prior to
operation.
3.2 OPERATION-ATTACHING TO
LOADER
 To attach the unit to the loader, start the load-
er and rotate the quick coupler out.
 Move the machine forward and align the male
portion of the quick attach on the loader with
the female portion of the quick attach on the
Roadhog.
 Secure the quick attach per the loader manu-
facturer’s recommended procedure.
 Check lock pins for engagement per the load-
er manufacturer’s procedure.
ALWAYS FOLLOW THE LOADER
MANUFACTURER’S RECOMMENDED
PROCEDURES FOR MOUNTING AT-
TACHMENTS TO THE LOADER. SE-
VERE INJURY OR DEATH COULD RE-
SULT FROM CRUSHING
WARNING
3.3 OPERATION-DUAL CONTROLS
This roadhog is equipped with two control sys-
tems. One controls the engine and the other con-
trols the planer. Optional planer controls are
available to use the joystick controls on the skid
steer loader.
Engine Controller
 Key switch turns Roadhog on and starts
engine
 Engine hour meter
 Emergency Stop
 Throttle switch
Planer Controller
 Controls milling depth
 Controls side shift position
 Controls tilt angle
Use the magnets on the control panels to mount
the controls in the loader cab. Make sure they
are easily accessed by operator. Read and fol-
low the maintenance section before starting en-
gine.
The emergency stop button can be pressed at
any time to shut down the engine. Turn the but-
ton to reset.
3.4 BASIC OPERATION
1. Start skid steer and raise Roadhog at least 4”
off of the ground.
2. Insure no one is near milling drum.
3. Ensure that throttle rocker switch is not acti-
vated. Turn key to start engine.
4. Allow engine to reach operating temperature.
If engine is cold, this will take a few minutes.
5. Activate throttle switch to go to full throttle.
6. Activate side shift and tilt switches to adjust
side shift and tilt to desired positions.
ALWAYS USE CAUTION WHEN
STARTING ENGINE. MILLING DRUM
TURNS WHEN ENGINE IS CRANKING
OR RUNNING. KEEP AWAY FROM
MILLING HEAD. SEVERE INJURY OR
DEATH COULD RESULT.
WARNING

10
7. Ensure milling depth is set at 0. Lower
RoadHog with skid steer. Adjust bucket tilt to
level skids on the ground.
8. Intermittently activate depth down switch to
slowly lower milling head to desired depth.
9. Slowly move the skid steer forward. Slow
down if machine vibrates excessively or if
Roadhog engine starts to stall.
10. At the end of the cut, activate depth up switch
to raise drum to 0 milling depth.
11. Turn key off or activate emergency stop but-
ton to shut down engine.
3.5 MAXIMIZING PRODUCTION
Production can vary greatly depending on milling
depth, type of aggregate in the mix, ambient tem-
perature and condition of the cutting teeth.
Teeth should be inspected every 30 minutes and
worn teeth replaced. Teeth should freely rotate in
their holders. See the maintenance section for
more information.
Optional teeth for milling concrete and water
spray kits are available. Water spray kits in-
crease production by suppressing dust and help-
ing the teeth rotate properly.
Only cut straight lines. Do not turn while milling.
This will quickly wear the edge picks, causing a
decrease in production. Milling a radius or curve
can also damage the drum.
3.6 EDGE OF CUT INDICATORS
This RoadHog is equipped with edge of cut indi-
cators on the front of the machine. These fold out
and extend. They allow the operator to accurate-
ly follow a painted line on the surface.
These indicators should be retracted for transport
or if milling close to an obstruction.
The RoadHog also has edge of cut decals on the
front and rear of the machine. These can be
used for less precise work.

11
4.1 MAINTENANCE-GENERAL
Proper maintenance of the attachment will result
in longer life and more productive and cost effec-
tive operation.
Maintenance can be divided into four basic cate-
gories
.1. Pick/holder replacement
2. Milling Head lubrication
3. Belt maintenance
4. Engine Maintenance
Prior to operating the attachment, read this entire
manual.
Follow all safety guidelines in this manual and
safety decals on the unit.
Always follow the MANDATORY SAFETY SHUT-
DOWN PROCEDURE before performing ANY
maintenance.
Make sure that all guards, shields, and decals are
in place and in good condition prior to operation.
FAILURE TO FOLLOW THE
PROCEDURES BEFORE CLEANING,
ADJUSTING, LUBRICATING, OR
SERVICING THIS UNIT COULD LEAD
TO SERIOUS INJURY OR DEATH.
WARNING
4.2 CUTTING DRUM MAINTENANCE
Cutting Drum maintenance is critical to ex-
tending the life of the pick and holder and
overall production of the RoadHog. Inspect
the cutting drum every 30 minutes of opera-
tion.
The factory installed carbide pick is a general pur-
pose pick and is designed for milling both asphalt
and concrete. Picks designed for extended peri-
ods of concrete cutting are available from the fac-
tory or your dealer.
Pick life varies with depth, density, material, ag-
gregate and maintenance, which includes allow-
ing the tooth to rotate. To maximize pick life, the
picks must be free to rotate in the holder. The
pick has two functions: serves as the consuma-
ble cutting tool and it protects the holder. The
tooth must be allowed to rotate in its’ holder. If it
locks up, then tooth and holder wear is greatly
accelerated
Edge teeth will always wear faster than center
teeth, due to side loading of the drum during the
loader’s steering corrections.
To promote pick rotation, spray the picks daily
with a water based asphalt emulsifier to break
down asphalt emulsion.
( Example: Zep’s part # AR6690 )
As regular use takes place, normal wear of the
carbide picks will occur with the outer most picks
wearing first.
If the pick remains in the holder beyond its intend-
ed replacement point, it reduces the cutting per-
formance and will not protect the holder. Check
the picks and holders for wear. If the picks are
worn enough to indicate slight holder wear, re-
place the picks.
RoadHog recommends using a water spray kit.
Using water may increase tooth life by 20 to 40%
and also suppresses the milling dust.

12
TO AVOID DAMAGE ALWAYS FOL-
LOW DISCONNECT PROCEDURE BE-
FORE WELDING. SEE SECTION 4.7
WELDING PRECAUTIONS
IMPORTANT
NEVER STRIKE THE PICK ON THE
CARBIDE TIP. THE CARBIDE CAN
BREAK OR CHIP AND CAUSE INJU-
RY.
WARNING
ALWAYS WEAR EYE PROTECTION
WHEN PERFORMING THIS OPERA-
TION. HARDENED TOOL AND CAR-
BIDE PICKS CAN SHATTER CASUING
INJURY.
WARNING
REMOVING AND INSTALLING TEETH:
The fork type pick tool included with the cold
planer should be used to remove the picks from
the holders. Insert the fork into the groove on the
tool and strike the tool with a hammer. In the
event the pick tool is not available, a punch may
be inserted into the bottom of the holders can be
used to dislodge the pick.
For installation, the fork type tool should be in-
serted into the groove on the tooth and struck
with a hammer. Also, if the tool is not available, a
length of pipe with a 3/4 to 1 inch inside diameter
can be placed over the pick to protect the carbide
from a direct hit. Striking a small piece of wood
placed on the pick to absorb the shock will also
prevent damage.
DO NOT STRIKE THE CARBIDE TOOTH TIP
WHEN INSTALLING TEETH.
RoadHog does not warrant ANY ground en-
gaging parts ( drums, teeth, holders or bases )
against wear, unless the wear is determined
by RoadHog to have been caused by an engi-
neering or manufacturing defect.

13
The following picture shows varying degrees of pick wear.
100 95 90 75 40 20 0 -5
Rotating teeth Non-rotating teeth
Teeth may last twice as long if they are free to rotate in their holder.
Examples of remaining tooth life ( % )
Tooth is no longer rotating in the holder,
causing premature tooth and holder wear.

14
4.3 ROADHOG LUBRICATION
(excluding engine)
Always follow the MANDATORY SAFETY SHUT-
DOWN PROCEDURE before performing ANY
maintenance.
There are three types of lubrication required on
the roadhog. They are spray lubrication, greased
components and planetary gearbox oil.
Spray Lubrication:
Spray side shift bars with graphite lube
spray (such as CRC 03094) once a week. Do
not apply grease to the side shift bars.
Grease catches milling dust and causes the
sideshift mechanism to bind.
Grease Lubrication:
All greased components should be greased with
an EP Lithium NLGL No. 2 grade grease. One
example is Mobilux EP2.
The dead shaft bearing grease zerk can be found
inside the drum on the right side of the milling
head. It should be greased daily or every 8 hours
of operation.
The depth cylinders have a grease zerk on each
end. They are located on the front of the milling
machine. These zerks should be greased weekly
or every 40 hours of operation.
The starter interlock skid pivot has a grease zerk.
This zerk is located on the left rear of the roadhog
below the fuel tank. This zerk should be greased
once a week or every 40 hours of operation.
The engine mounted bearing assembly has a
zerk on the hub facing the loader. This zerk
should be greased every 250 hours of operation.
This coincides with belt tensioning intervals. This
zerk should be greased until the vent on the op-
posite side of the hub pops out.
The engine mounted bearing assembly has a
zerk on the end of the shaft. This zerk should be
greased every 250 hours of operation. This coin-
cides with belt tensioning intervals. This zerk
should only be greased with 1-2 pumps of
grease.
Planetary Gearbox:
The planetary gearbox oil should be drained and
refilled at 100 hours of operation and every 250
hours after the initial change.
The planetary gearbox contains synthetic EP90
gear oil and should be half full during operation.
The planetary gear oil should be drained and re-
placed each year.
Oil Drain and fill procedure:
1. Clean area around drain hole on gearbox
spindle, and around both plugs on input
adapter.
2. Remove drain plug on spindle. Rotate drum
so drain plug is on the bottom. Drain oil.
3. Replace plug in spindle.
4. Remove both plugs on input adapter.
5. Slowly fill gearbox though top hole until oil fill
reaches hole on the side of the input adapter.
6. The gearbox should be half full of AGMA
EP90 synthetic gear lubricant or SAE 75W90
synthetic gear lubricant. (Chevron RPM Syn-
thetic 75W90 for example) The approximate
volume of the gearbox and input adapter is
approximately 30 oz.
7. Replace plugs in input adapter.
4.4 BELT TENSIONING
Always follow the MANDATORY SAFETY SHUT-
DOWN PROCEDURE before performing ANY
maintenance.
FAILURE TO FOLLOW THE
PROCEDURES BEFORE CLEANING,
ADJUSTING, LUBRICATING, OR
SERVICING THIS UNIT COULD LEAD
TO SERIOUS INJURY OR DEATH.
WARNING
FAILURE TO FOLLOW THE
PROCEDURES BEFORE CLEANING,
ADJUSTING, LUBRICATING, OR
SERVICING THIS UNIT COULD LEAD
TO SERIOUS INJURY OR DEATH.
WARNING

15
The RoadHog uses a high tension Kevlar back-
banded double V belt. Proper tensioning is criti-
cal to milling performance and belt life. It should
never be replaced with a standard V belt.
The belt tensioning should be checked after the
first 15 hours of operation and every 100 hours
after that. These same guidelines should be fol-
lowed if a new belt is installed. The tension be
checked and reset any time the belt is removed
and reinstalled.
There are two methods of checking the belt ten-
sion. One is with a sonic tension meter and the
other is with a double barreled hand tension me-
ter. The hand tester is shipped with the roadhog.
The sonic tension meter is available for purchase
from your RoadHog dealer.
Part number is SO-0249
Procedure with Gates 507C Sonic tension
Meter, part number SO-0249, purchased from
your dealer
1. Remove both upper and lower portions of the
belt shroud.
2. Loosen 6 bolts that hold the engine cradle to
the milling head chassis. 2 bolts are pivot
bolts and 4 are in slots on the front of the cra-
dle.
3. Loosen 2 jam nuts on engine cradle adjusting
bolts.
4. Connect Microphone to meter and press
POWER to turn meter on.
5. Press Hz to switch readout to Hertz.
6. Press MEASURE. Display should change to
a horizontal line.
7. Hold the microphone about ½ inch away from
belt at the midpoint of the front span of the
belt. Strike the belt with hand.
8. Horizontal line on meter will change to a wavy
line and read out the belt frequency in Hertz.
9. Meter will not read a frequency less than 15
Hz, so belt has to be fairly tight before the
meter can read the frequency. Also, high
ambient noise levels can prevent the meter
from reading the frequency.
10. Adjust two adjustment bolts on engine cradle
to adjust belt tension.
11. Repeat steps 6 through 9 until belt tension is
56-57 Hz for a new belt and 46-47 Hz for a
used belt (more than 15 hours).
12. Tighten 6 engine cradle bolts and tighten jam
nuts on adjusting bolts.
Procedure with non-Sonic tension tester, part
number 106-3842, shipped with your RoadHog.
1. Remove the outer shroud of the belt guard and
measure the distance from the top of the belt to
the notch cut out in the belt shroud.
2. On the scale reading “Inches of Span Length”,
set the “O”-rings to show the measurement just
taken in step one plus 0.39” of deflection.
3. At the center of the span between the pulleys
which is identified by the notch cut out in the
belt shroud, apply force, with the tension tester
perpendicular to the span, enough to deflect the
belt until the bottom edge of the “O” Rings are
even with the top of the back belt shroud.
4. Find the amount of deflection force on the up-
per scales of the tension tester, The total force
will be the sum of the readings on each of the
two scales. The sliding Rubber “O” Rings slide
up scale as the tool compresses—and stay up
for accurate reading of pounds of force. Read
the bottom edge of the rings (Slide rings down
before reusing).
5. Compare the total deflection force, it should be
between 45 to 47 lbs on a new belt ( 31 to 32
lbs on a used belt ). If less than minimum rec-
ommended deflection force, belt should be
tightened. If more that maximum recommend-
ed deflection force, drive is tighter than neces-
sary and can damage the bearing in the drive
system.
NOTE: There normally will be a rapid drop in
tension during the “break-in period” for V-belt
drives. Check tension frequently during the first
day of operations.
Deflection
ForceScale
(ReadUp)
Deflection
DistanceScale
(ReadUp)
Sliding
Rubber
“O” Rings
Read the scales at the bottom edge of
the “O” Ring. Leave the upper “O”
Ring in maximum “down” position

16
4.5 ENGINE MAINTENANCE
The roadhog is equipped with a tier 4 interim
Deutz D2011L03i 49 hp air cooled engine.
Air filters should be checked daily.
Engine oil level should be checked daily. Always
check engine oil with the engine level.
An engine manual is included with each
Roadhog. Please refer to the engine manual for
maintenance intervals, recommended fluids and
procedures. If the engine manual is not available
contact RoadHog for a replacement.
Pay particular attention to:
1. Engine oil changes
2. Air filter changes
3. Fuel Filter changes
4. Oil Cooler cleaning
5. Valve adjustments
4.6 HYDRAULIC SYSTEM
If necessary add hydraulic fluid to the hydraulic
tank to the middle of the tank site glass. Fill the
tank with Hytran Ultra ( MS1209 ) hydraulic fluid
or equivalent. Always check the fluid level with
the RoadHog level. Ensure the filter and hydraulic
fluid is changed every 50 hours of operations.
4.7 WELDING PRECAUTIONS
Before welding on the roadhog disconnect the
engine controller from the RoadHog. This panel
is equipped with a computer and welding may
damage the controller.
Also, disconnect the main engine harness, locat-
ed on the left rear of the cylinder block on the en-
gine.
If welding on the drum ground directly to the
drum. Do no allow current to flow through the
dead shaft bearing or planetary gearbox. These
components could be damaged.
TO AVOID DAMAGE ALWAYS FOL-
LOW DISCONNECT PROCEDURE BE-
FORE WELDING. SEE SECTION 4.7
FOR WELDING PRECAUTIONS
IMPORTANT
4.8 STARTER INTERLOCK
The roadhog is equipped with proximity switch
(prox) that disengages the engine starter if the
unit is sitting on the ground. The prox senses a
flag on a pivoting wear skid. Refer to image
below.
Proximity Sensor Specification:
- The prox switch has a sensing range of
8mm +/-10%(0.3125+/-10%).
- The prox has a red indicator light on the end
that shows if the prox is picking up the flag on the
wear skid.
Adjustment Procedure:
1. Raise the unit up off the ground unit you
can easily get to the prox switch.
2. Always use a safety block under the
machine or a safety chain before performing any
work.
3. The prox has two nuts that locks it in place.
4. Turn the starter switch 90 degrees but do
not start the engine. The switch need power to
light up the indicator light.
5. Hold or have someone hold up the pivoting
wear skid.
6. Loosen the locking nuts and move the prox
switch in towards the flag on the wear skid until
the indicator light illuminates.
7. Lock the prox switch in place with the two
jam nuts.
8. Once the prox switch is locked down
ensure the indicator light is still on and the head
of the prox is not touching the flag.
Prox Switch
Wear skid/flag

17
Date: / /
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
_______
4.9 MAINTENANCE CHECKLIST
DAILY MAINTENANCE
Check teeth every 30 minutes of operation, replace as needed
Confirm teeth rotate in their holders and lubricate as required
Check holders for wear
Grease the dead shaft bearing
Check for loose hardware and tighten as required
Check the air filters and clean or replace as required
Check engine oil level and add as required
Check hydraulic oil level and add as required
Check for fluid leaks and correct as required
AFTER INITIAL 15 HOURS OF OPERATION
Check drive belt tension and adjust as required
EVERY 40 HOURS OF OPERATION
All items above plus the following items (except belt tension)
Apply a dry lube to the side shift rods
Grease depth cylinders ( 4 locations )
Grease starter interlock ski
EVERY 40 HOURS OF OPERATION
Change the hydraulic filter and oil
AFTER INITIAL 100 HOURS OF OPERATION
All above items plus the following items (including belt tension):
Change the oil in the planetary gearbox
AFTER EACH 250 HOURS
All of the above items plus the following item:
Change the oil in the planetary gearbox
Check and adjust belt tension
REFER TO THE ENGINE MANUAL FOR ENGINE
MAINTENANCE SCHEDULES.

18
Torque Specifications Table
BOLT SIZE TORQUE (lb-ft)
1/4-20 UNC 8
5/16-18 UNC 17
3/8-16 UNC 30
7/16-14 UNC 50
1/2-13 UNC 75
1/2-20 UNF 90
5/8-11 UNC 150
3/4-10 UNC 260
7/8-9 UNC 430
1-8 UNC 640
1 1/8-7 UNC 800
NOTE: Unless otherwise specified, all bolts to be torqued as follows. Roadhog
bolts only-refer to engine service information for engine bolt torques.

19
ITEM QTY. RH1850 PART NUMBER RH2450 PART NUMBER DESCRIPTION
11106-2501 106-2501 LATCH ASSEMBLY, DRAW
22106-3155 106-3155 BUSHING, SHROUD BOLT
31106-3174 106-3174 WELDMENT, PLANETARY SUPPORT
42106-3202 106-3202 CYLINDER ASSY, DEPTH
51106-3224 106-3224 PLATE, WATERKIT COVER
61106-3518 106-3518 WELDMENT, CHASSIS
71106-3539 106-3539 WELDMENT, CHASSIS SHROUD
82106-3543 106-3543 PIN WELDMENT
91106-3904 106-3904 PLATE, BREAKER BAR
10 4HB025L0100A HB025L0100A BOLT, 1/4-20 X 1.00 PLATED
11 4HB031L0125A HB031L0125A BOLT, 5/16-18 X 1.25 PLATED
12 5HB038L0150A HB038L0150A BOLT, 3/8-16 X 1.50 PLATED
13 4HB050L0175A HB050L0175A BOLT, 1/2-13 x 1.75 PLATED
14 4HN025A HN025A NUT, 1/4-20 PLATED
15 4HN031A HN031A NUT, 5/16-18 PLATED
16 5HN038A HN038A NUT, 3/8-16 PLATED
17 2HN050A HN050A NUT, 1/2-13 PLATED
18 2HRRE125A HRRE125A RETAINING RING-EXTERNAL 1.25" DIA.
19 8HW025NA HW025NA WASHER, 1/4 NARROW PLATED
20 8HW031NA HW031NA WASHER, 5/16 NARROW PLATED
21 10 HW038WA HW038WA WASHER, 3/8 WIDE PLATED
22 4HW050NA HW050NA WASHER, 1/2 NARROW PLATED
23 2HW050WA HW050WA WASHER, 1/2 WIDE PLATED
24 4HZ001 HZ001 ZERK, 1/4-28 STRAIGHT
25 2HZ002 HZ002 ZERK, 1/4-28 45 DEG.
5.1 CHASSIS PARTS
PARTS LIST
ITEM QTY. PART NO. DESCRIPTION
1 1 106-2501_RH1850 LATCH ASSEMBLY, DRAW
2 2 106-3155 BUSHING, SHROUD BOLT
3 1 106-3174 WELDMENT, PLANETARY SUPPORT
4 2 106-3202_DCYL_RETRACTED CYLINDER ASSY, DEPTH
5 1 106-3224 PLATE, WATERKIT COVER
6 1 106-3518 WELDMENT,CHASSIS
7 1 106-3539 WELDMENT, CHASSIS SHROUD
8 2 106-3543 PIN WELDMENT
9 1 106-3904 PLATE, BREAKERBAR
10 4 HB025L0100A BOLT, 1/4-20 X 1.00 PLATED
11 4 HB031L0125A BOLT, 5/16-18 X 1.25 PLATED
12 5 HB038L0150A BOLT, 3/8-16 X 1.50 PLATED
13 4 HB050L0175A BOLT, 1/2-13 x 1.75 PLATED
14 4 HN025A NUT, 1/4-20 PLATED
15 4 HN031A NUT, 5/16-18 PLATED
16 5 HN038A NUT, 3/8-16 PLATED
17 2 HN050A NUT, 1/2-13 PLATED
18 2 HRRE125A RETAINING RING-EXTERNAL1.25"DIA.
19 8 HW025NA WASHER,1/4 NARROWPLATED
20 8 HW031NA WASHER,5/16 NARROWPLATED
21 10 HW038WA WASHER, 3/8WIDEPLATED
22 4 HW050NA WASHER,1/2 NARROWPLATED
23 2 HW050WA WASHER, 1/2WIDEPLATED
24 4 HZ001 ZERK, 1/4-28 STRAIGHT
25 2 HZ002 ZERK, 1/4-28 45 DEG.
1
1
3
1
4
2
5
1
6
1
7
1
8
210
4
13
2
15
4
18
2
20
8
24
4
25
2
13
2
2
2
14
4
17
2
19
8
22
4
23
2

20
PARTS LIST
ITEM QTY. PART NO. DESCRIPTION
1 1 106-3509 WELDMENT,DEPTHSKID
2 1 106-3529 WELDMENT, WEAR SKID
3 1 106-3532 WELDMENT, WEAR SKID
4 1 106-3535 WELDMENT, WEAR SKID-SWITCH
5 1 106-3542 PLATE, DEPTH SKID COVER
6 1 106-3709 BUSHING, SHROUD BOLT
7 1 106-3710 BUSHING, SHROUD BOLT
8 2 106-3792 PIN WELDMENT
9 4 HB038L0075A BOLT, 3/8-16 X 0.75 PLATED
10 2 HB050L0125A BOLT, 1/2-13 x 1.25 PLATED
11 8 HB063L0150A BOLT, 5/8-11 X 1.50 PLATED
12 4 HRRE125A RETAINING RING-EXTERNAL1.25"DIA.
13 4 HW038NA WASHER, 3/8NARROWPLATED
14 2 HW050WA WASHER, 1/2WIDEPLATED
15 8 HW063NA WASHER,5/8 NARROWPLATED
16 1 HZ001 ZERK, 1/4-28 STRAIGHT
17 1 RH1850_SKELETON SKELETON PART
1
1
2
1
3
1
4
1
5
1
8
2
9
4
10
1
12
2
15
8
16
110
1
12
2
6
1
7
1
11
8
13
4
14
1
14
1
5.1 CHASSIS PARTS-CONTINUED
ITEM QTY. RH1850 PART NUMBER RH2450 PART NUMBER DESCRIPTION
11106-3509 106-3774 WELDMENT, DEPTH SKID
21106-3529 106-3529 WELDMENT, WEAR SKID
31106-3532 106-3532 WELDMENT, WEAR SKID
41106-3535 106-3535 WELDMENT, SKI - STARTER INTERLOCK
51106-3542 106-3542 PLATE, DEPTH SKID COVER
61106-3709 106-3709 BUSHING, SHROUD BOLT
71106-3710 106-3710 BUSHING, SHROUD BOLT
82106-3792 106-3792 PIN WELDMENT
94HB038L0075A HB038L0075A BOLT, 3/8-16 X 0.75 PLATED
10 2HB050L0125A HB050L0125A BOLT, 1/2-13 x 1.25 PLATED
11 8HB063L0150A HB063L0150A BOLT, 5/8-11 X 1.50 PLATED
12 4HRRE125A HRRE125A RETAINING RING-EXTERNAL 1.25" DIA.
13 4HW038NA HW038NA WASHER, 3/8 NARROW PLATED
14 2HW050WA HW050WA WASHER, 1/2 WIDE PLATED
15 8HW063NA HW063NA WASHER, 5/8 NARROW PLATED
16 1HZ001 HZ001 ZERK, 1/4-28 STRAIGHT