The Rops Support Posts Need To Be Replaced On Certain 953C Track-Type Loaders. Caterpillar

NOTE: This Program must be administered as soon as possible. When reporting the repair, use "PI10013" as the Part number and "7751" as the Group Number, "56" as the Warranty Claim Description Code and "T" as the SIMS Description Code.Exception: If the repair is done after failure, use "PI10013" as the Part Number, "7751" as the Group Number, "96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code.

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

NOTE: This Revised Service Letter replaces the May 12, 2000 (Revised July 2000) Service Letter. Changes have been made to Illustration 1.

Problem

The ROPS support posts need to be replaced on certain 953C Track Type Loaders. The material properties of certain 953C ROPS support posts are below Caterpillar design standards. Machines need to be inspected and if the posts have certain serial numbers, they must be replaced.

Affected Product
Model & Identification Number

953 (2ZN2469-2512, 2ZN2514-2533, 2ZN2525-2530, 2ZN2534, 2ZN2536, 2ZN2538, 2ZN2545, 2ZN2557)

Parts Needed

1 - 1688130 ROPS Post Assembly

- Or -

1 - 1688131 ROPS Post Assembly

Action Required

See the attached rework procedures.

Owner Notification

U.S. and Canadian owners will receive the attached Owner Notification.

Service Claim Allowances

Parts Disposition

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

NOTE: MAKE EVERY EFFORT TO COMPLETE THIS PROGRAM AS SOON AS POSSIBLE.

Copy Of Owner Notification For U.S. And Canadian Owners

Rework Procedure

a. Inspect the ROPS support post and determine if the post serial number is in the replacement group (see Chart below). The serial number is located on the outer surface of the post, at the bottom (see Illustration 1).

b. If the ROPS support post serial number is in the replacement group, order a replacement post and install. Destroy the old post. Tighten the support post on the main frame to a torque of 800 ± 100 N·m. Tighten the cab on the support post to a torque of 850 ± 100 N·m.

Illustration 1.