Product Support Program For Replacing Lift Cylinder With Cracked Flanges On Certain 966F Wheel Loaders Caterpillar

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.

NOTE: This Program can be administered either before or after a failure. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS8037" as the Part Number and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and use " T" as the SIMS Description Code. If administered after failure, use "96" as the Warranty Claim Description Code and use " Z" as the SIMS Description Code.

Termination Date

Problem

The flange on the 3G5502 Cylinder Assembly which the head bolts onto may crack. The cylinder assemblies need to be replaced.

Affected Product
Model & Identification Number

966F (8BG943-944, 8BG948, 8BG969-971, 8BG981, 8BG984, 8BG986, 8BG988, 8BG994-1007, 8BG1010, 8BG1013, 8BG1016, 8BG2057, 8BG2063, 8BG2067, 8BG2072, 8BG2076, 8BG2079, 8BG2082, 8BG2084-2088, 8BG2090, 8BG2092)

Parts Needed

2 - 3G5502 Cylinder Assembly

Action Required

Remove the 3G5495 and 3G5496 Lift Cylinders from the machine. remove the rod and head assemblies from the 3G5502 Cylinder Assembly. Replace the piston seal and wear band as needed. reassemble the lift cylinders using the new 3G5502 Cylinder Assemblies and tighten the head bolts to a torque of 620 ± 80 N·m (455 ± 60 lb ft).

Service Claim Allowances

NOTE: This is a 7-hour job.

Parts Disposition

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