PRODUCT SUPPORT PROGRAM FOR INSTALLING ADDITIONAL CLEANING ACCESS HOLES AND NEW WHEELS ON CERTAIN 287 MULTI TERRAIN LOADERS Caterpillar

PRODUCT SUPPORT PROGRAM FOR INSTALLING ADDITIONAL CLEANING ACCESS HOLES AND NEW WHEELS ON CERTAIN 287 MULTI TERRAIN LOADERS

Usage:

SEBE8751

April 22, 2004
U-124

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*After failure only*	PRODUCT SUPPORT PROGRAM FOR INSTALLING ADDITIONAL CLEANING ACCESS HOLES AND NEW WHEELS ON CERTAIN 287 MULTI TERRAIN LOADERS
4192		PS50803

NOTE: This Program can only be administered after a failure occurs. The decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS50803" as the Part number and "7755" as the Group Number. Use "96" as the Warranty Claim Description Code and use "Z" as the SIMS Description Code.

NOTE: The information supplied in this service letter may not be valid after the termination date of this program. Do not perform the work outlined in this Service Letter after the termination date without first contacting your Caterpillar product analyst.

TERMINATION DATE

April 30, 2005

PROBLEM

Additional cleaning access holes and new wheels may need to be added on certain 287 Multi Terrain Loaders. When used in wet, muddy applications, material may be ingested into the under side of the frame rail, dry and then become trapped. The forward most and rearward most bogie wheels may experience accelerated or uneven wheel wear (when compared to the other bogie wheels). The trapped material may also prevent these bogie wheels from moving freely.

AFFECTED PRODUCT

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Model	Identification Number
287	CNY1-662

PARTS NEEDED

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Qty	Part Number	Description
96	2K4973	Locknut
72	4L6454	Bolt
168	1130693	Lock Washer
96	2288403	Bolt ? Carriage
8	2387728	Wheel
4	2387729	Wheel

ACTION REQUIRED

Install additional access holes in the undercarriage frame to allow cleaning of the trapped material and replace certain wheels. See the attached Rework Procedure.

SERVICE CLAIM ALLOWANCES

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Product smu/age whichever comes first	Caterpillar		Dealer Suggested		Customer Suggested
Product smu/age whichever comes first	Parts	Labor Hrs	Parts	Labor Hrs	Parts	Labor Hrs
0-1500 / 0-18 months	100%	28	0	0	0	0
NOTE: This is a 28?hour job.

PARTS DISPOSITION

Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.

Attach. (1-Rework Procedure)

Rework Procedure

Release the tension on the track. Refer to the Operation and Maintenance Manual (SEBU7494), "Track (Rubber) - Inspect/Adjust".
Remove the track from the undercarriage frame. Refer to the Disassembly and Assembly Manual (RENR4815), "Track Rubber ? Remove and Install ? 287".
Remove the idler and bogie wheel assemblies from the undercarriage frame. Refer to the Disassembly and Assembly Manual (RENR4815), "Bogie Suspension ? Remove ? 287" and "Idler Wheel ? Remove ? 287".

Note: When reinstalling the idler and bogie assemblies, tighten the 4L6454 Bolts to a torque of 50 +/- 10 N.m (37 +/- 7 lb-ft.).

For the locations indicated in Illustration 1, remove the wheels from the axle assemblies. Replace old wheels and hardware with: (1) 2387729 Center Bogie Wheel, (2) 2387728 Outer Bogie Wheel, (24) 2288403 Bolt, (24) 1130693 Lock Washer, (24) 2K4973 Lock Nut [quantities listed are per axle]. Tighten the 2288403 Bolts to a torque of 60 +/- 5 N.m (44 +/- 4 lb-ft.). Refer to the Disassembly and Assembly Manual (RENR4815), "Idler Wheel ? Remove - 287" and "Bogie Suspension ? Remove ? 287".

Note: The only bogie wheels that should be replaced using this program, are identified in Illustration 1.

Illustration 1

Remove the 2289231 Plate Assembly. Disconnect the 2225728 Drain Hose Assembly and 2225729 Parking Brake Hose Assembly from the tube assemblies that are mounted to the frame. See Illustration 2.

Illustration 2

Using a suitable lifting device, support the undercarriage frame and remove it from the torsion axles and lower to the ground. Refer to the Disassembly and Assembly Manual (RENR4815), "Undercarriage ? Remove - 287". The track drive frame should still be retained by the service bracket in the service position (Parallel to the frame, not perpendicular). Refer to the Disassembly and Assembly Manual (RENR4815), "Track Rubber ? Remove and Install ?287").
Using a suitable lifting device, remove the drive frame from the service bracket on the undercarriage frame rail and set aside. The hystat supply lines to the drive motors should still be attached.
Modify the frame using dimensions provided in Illustrations 3 and 4.
Repeat steps 1-7 for the opposite side of the machine.
Following steps 1-6 in reverse order, reassemble the undercarriages to the machine.
Tension track per Operation and Maintenance Manual, "Track (Rubber) - Inspect/Adjust".