- Caterpillar Products: All
Important Safety Information
European Union Compliant, CE marked
Most accidents that involve product operation, maintenance, and repair are caused by failure to observe basic safety rules or precautions. An accident can often be avoided by recognizing potentially hazardous situations before an accident occurs. A person must be alert to potential hazards. This person should also have the necessary training, skills, and tools to perform these functions properly.
Improper operation, lubrication, maintenance, or repair of this product can be dangerous and could result in injury or death.
Do not operate or perform any lubrication, maintenance, or repair on this product until you have read and understood the Tool Operating Manual.
Safety precautions and warnings are provided in this manual and on the product. If these hazard warnings are not heeded, bodily injury or death could occur to you or to other persons.
The hazards are identified by the "Safety Alert Symbol" and followed by a "Signal Word" such as "DANGER", "WARNING", or "CAUTION". The Safety Alert "WARNING" label is shown below.
A non-exhaustive list of operations that may cause product damage are identified by "NOTICE" labels on the product and in this publication.
Caterpillar cannot anticipate every possible circumstance that might involve a potential hazard. The warnings in this publication and on the product are, therefore, not all inclusive. If a tool, procedure, work method, or operating technique that is not recommended by Caterpillar is used, the operator must be sure that the procedures are safe. The operator must also be sure that the product will not be damaged or made unsafe by any unspecified procedures.
The information, specifications, and illustrations in this publication are based on information that was available at the time that the publication was written. The specifications, torques, pressures, measurements, adjustments, illustrations, and other items can change at any time. These changes can affect the service that is given to the product. Obtain the complete and most current information before you start any job.
When replacement parts are required for this product Caterpillar recommends using Caterpillar replacement parts or parts with equivalent specifications including, but not limited to, physical dimensions, type, strength, and material.
This manual contains safety information, operation instructions and maintenance information and should be stored with the tool group
Some photographs or illustrations in this publication may show details that can be different from your service tool. Guards and covers might have been removed for illustrative purposes.
Continuing improvement and advancement of product design might have caused changes to your service tool, which are not included in this publication.
Whenever a question arises regarding your service tool or this publication, consult Dealer Service Tools (DST) for the latest available information.
The Safety section lists basic safety precautions.
Read and understand the basic precautions listed in the Safety section before operating or performing maintenance and repair on this service tool.
General Information Section
The General Information section describes tooling functions and features. The section provides useful information on individual parts, additional tooling, and resources.
The Operation section is a reference for the new operator and a refresher for the experienced operator.
Photographs and illustrations guide the operator through correct procedures for using the tool group.
Operating techniques outlined in this publication are basic. Skill and techniques develop as the operator gains knowledge of the service tool and the tools capabilities.
The Maintenance section is a guide to tool inspection, cleaning, storage, and tool disposal
Service Parts Section
The Service Parts section is a reference for parts identification and available part numbers.
Safety Icon Nomenclature
Personal Protection/Important Information
Personal Protection/Important Information
|Crushing hazard (foot)|
|Crushing hazard (hand)|
|Electrical Shock - Hazard|
Personal injury or death can result from escaping fluid under pressure.
Escaping fluid under pressure, even a very small pin-hole size leak, can penetrate body tissue and cause serious injury and possible death. If fluid is injected into your skin, it must be treated immediately by a doctor familiar with this type of injury.
Always use a board or cardboard when checking for a leak.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.
Refer to Special Publication, NENG2500, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products.
Dispose of all fluids according to local regulations and mandates.
To prevent dirt and contaminants from entering the hydraulic system, always plug or cap the lines, fittings, or hoses as they are disconnected.
This action also lessens the chance of oil spills.
The Caterpillar Idler/Roller Assembly Machine can be used on all Caterpillar roller models, including snap ring, oval track, and duo-cone seal track rollers. This machine is designed for easy assembly and disassembly of idler/rollers.
The idler/roller assembly machine is custom built at DST to include a specific, customer-selected hydraulic power supply unit (Table 1).
The idler/roller assembly machine and power supply unit must be ordered separately. Table 1 lists available power supply units.
|Power Supplies    |
|Part No.    ||Description    ||Phase    |
|149-7359    ||115V, 60 Hz    ||1 Phase    |
|146-2460    ||220V, 50/60 Hz    ||1 Phase    |
|146-2461    ||230/460V, 60 Hz    ||3 Phase    |
|140-6241    ||220/380/440V, 50 Hz    ||3 Phase    |
Note: The power supply is shipped without any hydraulic oil. Fill with 10W hydraulic oil (HYDO).
Each hydraulic power supply has an identification and serial number plate, providing the basic hydraulic and electrical hookup information.
The machine comes completely assembled, requiring only electrical hookup.
The tooling for the idler/roller assembly machine is easy to install. Simply select the proper contact tooling plunger and screw it into the rod end of the hydraulic cylinder. Select the proper cradle assembly, set it in place, and adjust the roller wheels (depending on model/size of part).
The work table base sits on the interior slide rails of the machine frame. The work table moves on four rollers to allow the idler/roller to be easily positioned in the idler/roller assembly machine.
The work table is used to support the three cradle assemblies. A center bearing allows the cradle to be rotated 180 degrees in order to press bearings into both sides of the idler/rollers without removing the part from the cradle.
A hydraulic power supply and control valve is used to raise and lower the work table.
Three cradles are available with the idler/roller assembly machine.
The smallest carrier is used for all rollers (models D3 through D11).
The mid-sized carrier is used for idlers (models D3 through D10). This carrier uses the top cradle hold-down assembly to secure the idler in the carrier.
The large carrier is used for the D11 idler. This carrier also uses the top cradle holddown assembly to secure the idler in the carrier.
A pair of adjuster arms hold the idler/roller in place while pressure is applied to the idler/roller assembly shaft by the hydraulic cylinder.
The adjuster arms mate with a gear rack and require no special tooling to change their position. The gear rack and gear teeth provide a variable combination of adjustments.
Collar Adjustment Arms
A set of collar adjustment arms are included for use with oval track rollers. These arms can be attached to an end collar of an oval track roller with customer-supplied bolts.
Work Table Height Adjustment
The operator controls the machine using a variable pressure control valve. Pushing or pulling the control valve handle slightly results in slower operation of the work table or the hydraulic cylinder. Pushing or pulling the control valve handle completely results in faster operation.
Slide rails inside the idler/roller machine frame allow the work table to slide back and forth along the interior length of the machine frame.
The hydraulic cylinder has a 152 mm (6.0 in) bore, a 914 mm (36.0 in) stroke, and a 64 mm (2.5 in) rod. The cylinder provides 42 tons of force for assembling/disassembling the idler/rollers.
Disassembly and Assembly, RENR2059, "Disassembly and Assembly Procedures for Rollers with Inverted Duo-Cone Seals"
Disassembly and Assembly, RENR3961, "Disassembly and Assembly Procedures for Rollers with Conventional Duo-Cone Seals"
Disassembly and Assembly, RENR3962, "Disassembly and Assembly Procedures for Snap Ring and Oval Track Rollers"
Additional Contact Information
For additional product support questions concerning this tool, contact the Dealer Service Tools Hotline at:USA: 1-800-542-8665, Option 1International:: 1-309-578-7372
The Idler/Roller Assembly Machine may be shipped as two separate units. Idler/roller assembly machine frame (1) will be shipped with power supply (3) pre-installed. Hydraulic cylinder (2) may be shipped as a separate unit, requiring customer installation.
Unpacking the Parts
- Remove the smallest cradle from the shipping container. This cradle is used for all rollers.
- Remove the mid-sized idler cradle from the shipping container. This cradle is used for D3-D10 idlers.
- Remove the largest cradle from the shipping container. This cradle is used for D11 idlers only.
- Remove the top cradle hold-down assembly from the shipping container. Remove the four threaded rods used to attach the top hold-down assembly to the mid-sized idler cradles.
- Remove the two small roller shafts and the four cradle rollers from the shipping container. Remove the two large roller shafts and the four cradle rollers.
- Remove the four collar adjustment arms, two adjustment arm pins, and four retaining rings from the shipping container.
(1) Shaft and rollers for small roller cradle. (2) Shaft and rollers for both idler cradles.
- Remove the threaded pusher pin from the shipping container.
- Remove both adjuster arms from the shipping container.
- Make sure the three-pieced thrust washer is installed in the idler/roller frame.
- If necessary, use an overhead lifting device to attach a sling to either end of the cradle assembly.
- Place the locating pin of the cradle assembly into the thrust washer bearing.
- Place the assembled cradle rollers into the cradle, as shown.
Note: The smaller diameter rollers are used for the smaller cradle. The larger diameter rollers are used for the larger cradle.
- When the mid-sized and large cradles are used, always install the top cradle holddown assembly using the four threaded rods and the dealer-supplied hex nuts.
Note: The groove in the roller shaft must be completely seated in the notch of the cradle assembly.
Collar Adjustment Arm Installation
- Align two adjuster arms (1) and install adjuster arm pin (2), as shown.
- Install two retaining clips (3), one on each end of the pin.
(1) Adjuster arms. (2) Arm pin. (3) Retaining clips.
- Repeat the process for the other adjuster arms.
- When not in use, the assembly arms should be in a retracted position, as shown.
Adjuster Arm Installation
- Loosen the two screws holding the top retaining plate to the adjuster arm.
- Insert the bottom retaining clip of the adjuster arm over the lower frame rail, as shown.
- Place the top retaining clip over the upper frame rail and tighten the screws.
Note: The bottom retaining clip is bent to allow installation of the adjuster arm. Do not straighten the clip.
- Repeat the process for the other adjuster arms.
- Anchor the idler/roller assembly machine frame to the floor.
- If necessary, install the hydraulic cylinder.
- Connect the electrical cable from the Start/Stop switch to a suitable power source.
- Fill the hydraulic tank of the power supply with 10W hydraulic oil (HYDO).
Note: When turning the unit ON, make sure the motor is rotating in the proper direction. An arrow on the side of the motor indicates the proper direction of rotation.
- Check the oil level. It should be visible in the center of the oil sight tube on the side of the hydraulic power supply.
DO NOT overfill the hydraulic tank of the hydraulic power supply unit. Overfilling the tank can cause the hydraulic power supply unit to fail.
- If necessary, install the two control handles, as shown.
- Install the threaded pusher pin into the cylinder. Make sure the pin is threaded into the cylinder rod completely.
- Start the idler/roller assembly machine and extend and retract the hydraulic cylinder to test the hydraulic system for leaks.
- Make sure the hydraulic system pressure is 30684 kPa (3000 psi). To check the pressure, fully retract the cylinder and read the pressure gauge. If adjustments are necessary, see the ""Maintenance" " Section.
This section describes the basic operation of the idler/Roller Assembly Machine. Refer to the ""References" " Section to obtain detailed assembly/disassembly instruction.
- Do not place hands or fingers between the cradle and the assembly arms when rotating the cradle.
- When raising the idler/roller frame, make sure the cradle is not under the assembly arms or the collar adjustment arms. Raising the idler/roller frame when the cradle is under either of these parts will cause damage to the machine.
The operator can control the work table height and cylinder rod movement using a variable pressure control valve. Pushing or pulling the control valve slightly results in slower operation of the idler/roller frame assembly or the hydraulic cylinder. Pushing or pulling the control valve handle completely results in faster operation.
- Thread the required tooling for the specific idler/roller into the cylinder rod.
- Install the appropriate cradle (size depends on the part being repaired).
Make sure the tooling is fully threaded into the cylinder rod to avoid damaging the threads on the tooling and the hydraulic cylinder.
- Insert the cradle roller assemblies in the proper notch, depending on the size of the component.
- Adjust the roller wheels on the cradle to contact the flats of the idler/roller.
- Place the idler/roller on the work table.
- Align the adjuster arms. Make sure the adjuster arms are properly aligned (side-to-side) and properly seated.
- Slide the work table forward until the idler/roller is firmly seated against both the adjuster arms.
Make sure the teeth of the adjuster group are firmly mated against the teeth of the gear rack before applying pressure against the idler/roller, to prevent damage to the adjuster groups or the gear rack.
- Start the idler/roller assembly machine. To turn the machine ON, press START (I) button. To turn the machine OFF, press STOP (O) button.
Make sure only the solid, flat surfaces of the idler/rollers are placed against the adjuster arms. Pressing against the interior hub or bolts could result in damage to the idler/roller or the adjuster groups.
- Raise or lower the work table to align the idler/roller with the hydraulic cylinder rod. To raise the idler/roller frame table, lift the control lever. To lower it, press down on the control lever.
- Extend the hydraulic cylinder rod against the idler/roller shaft. To extend the hydraulic cylinder, press the control lever down, and to retract the cylinder, pull the lever up.
- Follow the instructions in the appropriate idler/roller disassembly and assembly manual.
An oval idler/roller may have an end collar which must be removed before removing the idler/roller shaft.
- Attach the collar adjustment arms to the end collar.
- Start the idler/roller assembly machine.
- Advance the hydraulic cylinder rod against the idler/roller shaft until the idler/roller is clear of the end collar.
- Retract the hydraulic cylinder.
- Stop the idler/roller assembly machine before removing the end collar from the hydraulic cylinder rod.
To drain the hydraulic tank, remove the plug in the bottom of the tank.
Note: Properly dispose of any used oil following federal, state, and local guidelines.
Change the hydraulic oil filter (9U-6981) whenever the differential pressure gauge is in the red area.
Work Table Height Adjusting Chain
- Periodically check the tension of the roller frame drive chain.
- If the chain is loose, loosen the two hydraulic motor mounting bolts, and adjust the hydraulic motor to increase the tension on the chain.
- Periodically lubricate (grease) the chain and sprocket.
- Periodically lubricate (grease) the drive screw.
Clean and Inspect
- Periodically clean the rollers on the idler/roller frame assembly.
- Periodically check the tightness of the eight hydraulic cylinder mounting bolts.
Work Table Roller Wheels
To remove or reposition the idler/roller frame assembly roller wheels, the idler/roller frame must be supported so the roller wheels are not engaged on the frame.
(1) Screws. (2) Roller wheel shaft.
- Loosen two screws (1) in the roller wheel collar.
- Remove roller wheel shaft (2) and remove the wheel.
- If removed, replace the six hydraulic power supply hoses in their proper order.
- Attach hose (3) to the cylinder rod end of the cylinder. Attach hose (4) to the head end of the cylinder rod.
(1) Outlet hose (pressure). (2) Inlet hose (filter). (3) Cylinder rod end hose. (4) Cylinder head end hose.
(5) Inlet (hydraulic motor). (6) Outlet (hydraulic motor).
- Attach hose (5) and hose (6) to the hydraulic motor.
(3) Hose. (4) Hose.
- Attach hose (1) and hose (2) to the hydraulic power supply, as shown.
(5) Hose. (6) Hose.
(1) Hose. (2) Hose.
Hydraulic Control Valve
If removed, replace the six hydraulic power supply hoses on the valve assembly in the proper order, as shown.
(1) Outlet hose (pressure). (2) Inlet hose (filter). (3) Cylinder rod end hose. (4) Cylinder head end hose. (5) Inlet (hydraulic motor). (6) Outlet (hydraulic motor).
Adjusting Hydraulic Pressure
Change the hydraulic pressure by adjusting the relief control valve located on the front of the directional valve.
Note: The maximum hydraulic pressure is 20684 kPa (3,000 psi).
- Remove the cap from the relief control valve.
- Start the machine.
- Fully retract the hydraulic cylinder and continue to hold the hydraulic control lever in the retract position.
- Turn the valve adjusting screw until the reading on the gauge reads 20684 kPa (3000 psi).
- Release the hydraulic control lever.
- Partially extend and then fully retract the hydraulic cylinder while checking the gauge to verify the pressure setting.
- Release the hydraulic control handle, and replace the cap on the relief control valve.
- Repeat Step 6 to verify the pressure setting again.
Idler/Roller Assembly Machine
|Idler/Roller Assembly Parts List    |
|Item    ||Qty.    ||Part No.    ||Description    |
|(1)    ||4    ||8C-8844    ||Bolt    |
|(2)    ||1    ||190-1607    ||Roller Assembly Group    |
|(3)    ||1    ||1U-7544    ||Hydraulic Pump (Hand)    |
|(4)    ||1    ||199-5449    ||Directional Valve    |
|(5)    ||4    ||192-1611    ||Collar Adjustment Arm    |
|(6)    ||1    ||-    ||Hydraulic Cylinder    |
|(7)    ||1    ||192-1606    ||Frame Assembly    |
|(8)    ||2    ||192-1609    ||Adjuster Group    |
|(9)    ||1    ||192-1612    ||Stand Assembly    |
|(10)    ||1    ||192-1617    ||Carrier Assembly Group    |
|(11)    ||4    ||-    ||Stop Angle    |
|(12)    ||14    ||0S-1614    ||Bolt    |
|(13)    ||4    ||1J-5257    ||Bolt    |
|(14)    ||4    ||2J-3507    ||Nut    |
|(15)    ||1    ||-    ||Angle Mount    |
|(16)    ||2    ||-    ||Carrier Guard    |
|(17)    ||3    ||9S-8750    ||Nut    |
|(18)    ||3    ||1S-2713    ||Bolt    |
|(19)    ||6    ||0S-1618    ||Bolt    |
|(20)    ||4    ||9M-1974    ||Washer    |
|(21)    ||2    ||192-1602    ||Gear Rack    |
|(22)    ||4    ||2J-3503    ||Nut    |
|(23)    ||4    ||3B-4516    ||Lock Washer    |
|(24)    ||4    ||2K-6073    ||Socket Head Cap Screw    |
|(25)    ||2    ||192-1604    ||Pin    |
|(26)    ||4    ||134-2263    ||Retaining Pin    |
|(27)    ||1    ||1U-7530    ||Hydraulic Ram (10 ton)    |
|(28)    ||4    ||5P-8250    ||Washer    |
|(29)    ||1    ||-    ||Roller Cradle    |
|(30)    ||2    ||-    ||Roller Shaft for Item #29    |
|(31)    ||4    ||-    ||Rollers for Item #29    |
|(32)    ||1    ||-    ||Mid-Sized Idler Cradle    |
|(33)    ||2    ||-    ||Roller Shaft for Items 32 & 35    |
|(34)    ||4    ||-    ||Rollers for Items 32 & 35    |
|(35)    ||1    ||-    ||Large Idler Cradle    |
|(36)    ||1    ||-    ||Top Cradle Hold-Down Assembly    |
|(37)    ||4    ||-    ||Threaded Rods    |
|(A)    ||8    ||-    ||Anchor Bolts (customer supplied)    |
Power Supply Unit
|Power Supply Group    |
|Item    ||Qty    ||Part No.    ||Description    |
|(1)    ||1    ||146-2457    ||Motor, Electric, 220 VAC, 50/60 Hz, 1 phase (146-2460)    |
|146-2458||Motor, Electric, 230/460 VAC, 60 Hz, 3 phase (146-2461)    |
|140-6240||Motor, Electric, 220/380/440 VAC, 50 Hz, 3 phase (140-6241)    |
|149-7363||Motor, Electric, 115 VAC, 60 Hz, 1 phase (149-7359)    |
|149-7359||Motor, Electric, 115 VAC, 60 Hz, 1 phase    |
|(2)    ||1    ||9U-6988    ||Filter Head    |
|(3)    ||1    ||9U-6981    ||Filter Element    |
|(4)    ||1    ||6V-7483    ||Adapter, Straight    |
|(5)    ||1    ||1F-6660    ||Nipple, Pipe    |
|(6)    ||1    ||147-1263    ||Coupling Assembly    |
|(7)    ||4    ||0S-1617    ||Bolt    |
|(8)    ||-    ||122-6915    ||Hose,
152 mm (6.0 in)
|(9)    ||2    ||9M-0164    ||Clamp    |
|(10)    ||1    ||033-0820    ||Elbow, 90°    |
|(11)    ||1    ||3B-7257    ||Bushing, Reducing    |
|(12)    ||1    ||147-1264    ||Element    |
|(13)    ||1    ||149-7364    ||Pump (149-7363 Motor only)    |
|(14)    ||1    ||-    ||Adapter    |
|(15)    ||1    ||147-1265    ||Gasket    |
|(16)    ||4    ||0S-1595    ||Bolt    |
|(17)    ||1    ||139-5448    ||Tank    |
|(18)    ||1    ||-    ||Cover Kit    |
|(19)    ||1    ||147-1545    ||Gasket    |
|(20)    ||1    ||9U-6986    ||Gauge    |
|(21)    ||-    ||-    ||Wire, Electric
549 cm (18 ft)
|(22)    ||3    ||-    ||Cord Grip    |
|(23)    ||1    ||149-5477    ||Starter, Motor    |