Case ALITEC CW12 User manual

ROCK WHEEL
MODELS
CW12 CW18 CW18XTP CW24 CW24XTP
EFFECTIVE SERIAL NO.
MANUAL
*Operation
*Maintenance
*Service
*Parts
M-CW REV H 5/8/03

2
INTRODUCTION
Thank you for your investment in Case/Alitec attachments. We are confident that you
will find that your Case/Alitec attachment is the easiest to operate, safest, most durable,
and most efficient attachment on the market.
Your Case/Alitec attachment is equipped with high performance, heavy duty
components. To ensure that these components operate properly and effectively, this
manual must be followed. If any question regarding the operation or performance of this
attachment exists, contact your Case/Alitec dealer at once.
This manual contains safety instructions, guidelines for efficient operation,
troubleshooting tips, and service and maintenance procedures. When applicable, the
terms “right” and “left” are referenced from a sitting position facing forward in the
loader.
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 provide directives that will 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 Case/Alitec dealer.

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TABLE OF CONTENTS
Page
SAFETY DECALS ............................................................................................................ 3
SAFETY PRECAUTIONS ............................................................................................... 6
MANDATORY SAFETY SHUTDOWN PROCEDURE .............................................. 6
SAFETY ............................................................................................................................. 7
SETUP ................................................................................................................................ 8
OPERATION..................................................................................................................... 9
EXPLODED VIEW-CW ................................................................................................ 12
PARTS LIST-CW............................................................................................................ 13
EXPLODED VIEW - HYDRAULICS .......................................................................... 16
PARTS LIST - HYDRAULICS...................................................................................... 17
MAINTENANCE ............................................................................................................ 18
SERVICE ......................................................................................................................... 19
SPECIFICATIONS ......................................................................................................... 21
HYDRAULIC/ELECTRICAL SCHEMATIC ............................................................. 22
WARRANTY ................................................................................................................... 23
WARRANTY & POLICIES........................................................................................... 24

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SAFETY DECALS
Keep clear during
operation.
WARNING
PINCH AREA
D0192
This decal indicates possible pinch point
areas on the attachment. Stay clear of
this area during operation. Failure to
observe this warning could result in
serious injury or death. (D0192)
(D0209) NO STEP
(D0404)
WARNING
D0195
FLYING OBJECT
Keep clear during
operation.
HAZARD
This decal indicates the possibility of
objects flying from the attachment during
operation. Stay clear of these areas
during operation. Failure to observe
this warning could result in serious
injury or death. (D0195)
(D0062)

5
(19924)
(54519)

SAFETY
PRECAUTIONS
ACCIDENTS ARE
PREVENTABLE WITH YOUR
HELP
WARNING
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.
Exercise extreme caution when hitching and
removing the attachment, operating with
other workers present, and servicing the
unit.
Case/Alitec always 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 the safety decals on the machine
provide important safety information and
observed closely. If safety decals become
difficult to read, replace them immediately
(see “Safety Decals”).
MANDATORY
SAFETY
SHUTDOWN
PROCEDURE
BEFORE cleaning, adjusting, lubricating.
or servicing this unit, ALWAYS follow the
MANDATORY SAFETY SHUTDOWN
PROCEDURE:
1. Move the skid steer loader propulsion control
lever to the “neutral” position.
2. Shut off the attachment by shutting off the
auxiliary hydraulic output.
3. Lower the loader lift arms completely and
roll the attachment forward so it is securely
resting on firm ground or the shop floor.
4. Engage the loader park brake.
5. Move the loader throttle to the slow idle
position, shut the engine off, and remove the
ignition key.
6. Keep the key with you at all times when
working on the unit so no one can start the
engine without your knowledge.
WARNING
FAILURE TO FOLLOW THE
PROCEDURES BEFORE
CLEANING, ADJUSTING,
LUBRICATING, OR SERVICING
THIS UNIT COULD LEAD TO
SERIOUS INJURY OR DEATH.

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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. Familiarize yourself with the
safety precautions listed below.
WARNING
THE FOLLOWING PRECAUTIONS
MUST BE OBSERVED FOR THE
SAFETY OF THE OPERATOR
AND/OR SERVICE PERSONNEL.
1. Read and observe all safety information
and decals on the skid steer loader and
attachment BEFORE operating the unit!
(See Safety Decals). In addition,
familiarize yourself with all loader safety
devices and check daily that they are
functioning properly.
2. Refer to the SAFETY section of your
skid loader operator’s manual and
observe all safety recommendations set
forth in that manual.
3. When loading, keep attachment as low to
ramps & trailer as possible.
4. Always lower the loader arms fully
before leaving the skid steer seat.
WARNING
NEVER CRAWL UNDER RAISED
LOADER ARMS.
5. BE SURE to raise the attachment totally
off the ground BEFORE sideshifting.
6. CAREFULLY inspect ALL hydraulic
hoses and connections on a routine basis;
Always use a piece of cardboard when
searching for leaks.
7. BE SURE to exercise the above
MANDATORY SAFETY
SHUTDOWN procedure, BEFORE
proceeding with any work on the
attachment.
WARNING
NEVER USE YOUR HANDS AS
ESCAPING FLUID UNDER PRESSURE
CAN PENETRATE THE SKIN
CAUSING 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.
WARNING
NEVER ALLOW HANDS OR FEET
NEAR ANY WORKING PART OF THE
ATTACHMENT UNLESS THE
MANDATORY SAFETY SHUTDOWN
PROCEDURE HAS BEEN
COMPLETED.

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SETUP
WARNING
READ THIS ENTIRE MANUAL AS
WELL AS THE DECALS ON THE
ATTACHMENT BEFORE
ATTEMPTING ANY MAINTENANCE,
SERVICE, OR SETUP OF THE UNIT.
Although the Case/Alitec Attachment is
supplied fully assembled, some simple
checks should be performed before
operation begins.
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 exploded
diagram. Copies of the decals are shown in
“Safety Decals” section.
Lubrication
All attachment joint grease fittings should
be greased until grease flows out of the
joint.
IMPORTANT
Type of lubricant should be 80-90W gear
lube, with an EP (extreme pressure)
rating of GL-5 minimum.
Hoses / Fittings
Hydraulic fittings are used to connect all
attachment hoses. All fittings should be
tight and free of hydraulic leaks. Hoses
must be free of crimps or cuts that might
result in leakage. Check your attachment
before operation to make sure all hose
routings are kink-free and allow for
maximum movement of all extend,
lift/lower, and/or swing motion required
during normal operation.
Wire Harness
The wiring harness to the electro hydraulic
valve block should be routed to prevent
catching or pinching when sideshifting or
lowering the wheel fully into the ground.
Ensure the wiring harness is routed under
the sideshift frame top angle into the loader
cab to prevent tripping when entering or
exiting the loader.
Wheel Assembly
For proper operation, wheel picks must be
installed in every holder on the wheel.

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OPERATION
The rock wheel is a hydraulically powered
attachment 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
recommended 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.
As noted in the Case/Alitec literature, the
attachment requires a minimum hydraulic
supply of 25 gallons per minute (100 liters
per minute) at 2000psi (135 bar).
IMPORTANT
Insufficient hydraulic power will result in
poor performance. Check auxiliary high
flow per factory specifications.
Attaching to Loader
To attach the unit to the loader, start the
loader engine and rotate the couplers out.
Pull both couplers levers up to the vertical
position. Move the machine forward and
pick up the attachment. Rotate the
attachment back and push both coupler
levers completely down. Make sure the two
wedges are completely down and engaged.
See operating instructions in the loader
manual.
In attaching the unit to the skid steer, ensure
that all hydraulic hoses are coupled securely
to the quick couplers. Five hoses are to be
connected. Motor pressure, motor return,
motor casedrain, and two high flow
hydraulic hoses.
IMPORTANT
All hoses should be free of kinks, cuts, or
abrasions for safe operation.
To Operate
1. Engage the hydraulic power, set the
depth arm to the proper depth setting and
lower the rock wheel slowly.
2. Actuate the bucket cylinder function for
rollout until the wheel depth pad comes
in contact with the pavement surface.
3. Before advancing the host vehicle, allow
the wheel to operate until it reaches the
desired depth.
IMPORTANT
For most effective operation, the majority of
the weight of the unit should be placed on
the rock wheel with the loader arms fully
lowered.
IMPORTANT
Operating the rock wheel with the loader
arms in the float position will result in
excessive vibration and should be avoided.
4. With the front depth control arm and pad
set for acceptable cutting depth, the
loader function should be used for lifting
or lowering during rock wheel operation.

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5. Excessive ground speed will stall wheel
rotation. The hydraulic relief valve on
the skid steer will prevent damage from
occurring by diverting all flow from the
wheel motor and the rotation of the rock
wheel will stop. When this occurs,
simply stop or slightly reverse the
forward drive of the host vehicle. For
maximum productivity, the rock wheel
should always be operated at full engine
throttle to ensure that full hydraulic
horsepower is available to the cutting
wheel.
IMPORTANT
The bucket cylinder function should never
be used to lift the wheel when it is stalled
due to the existence of secondary reliefs on
some host vehicle bucket cylinders.
Side Shift Operation
The two auxiliary hoses (See Exploded
Diagram), when connected to the auxiliary
hydraulics of the skid steer, provide
hydraulic power necessary for depth and
sideshift operations. To operate the
sideshift control, set the options switch to
"sideshift" and actuate auxiliary control.
The rock wheel will freely shift on the
sideshift rods. In the event that the direction
of travel does not correspond with the side
of the auxiliary control, simply switch the
sideshift hoses.
Hydraulic Depth Control
To operate the hydraulic depth control, set
the options switch to `depth' and actuate the
auxiliary hydraulics to achieve the desired
depth.