FILTER GP-DIESEL PARTICULATE 4373551 - Caterpillar

Introduction
The problem that is identified below does not have a known permanent solution. Until a permanent solution is known, use the solution that is identified below.Problem
The valve cover leaks.Solution
Caterpillar is aware of this problem, but an interim repair has not been defined. Replace with same parts.To diagnose the cause of these leaks, Caterpillar would like the parts returned labeled in the manor described below.This document also provides recommendations to communicate information back to Caterpillar which will help in the final resolution.In the event of failure, provide the pictures and additional information along with TIB Media Number, M0098285, CPI # 426580, Machine S/N, and part hours at failure to your Dealer Technical Communicator (TC). Request the Dealer TC to submit the information through CPI Feedback within the Service Information Management System (SIMS).In the event of failure, create a Service Information Management System (SIMS) entry for the failed parts to generate a "Send-It-Back" (SIB) request. A SIB request will be issued to you through the SIB process after the SIMS entry is created. Submit the failed parts and reference CPI # 426580.
Do not operate or work on this product unless you have read and understood the instruction and warnings in the relevant Operation and Maintenance Manuals and relevant service literature. Failure to follow the instructions or heed the warnings could result in injury or death. Proper care is your responsibility.
Take pictures of valve cover, indicating leak area.
Clean outside surface of valve cover, including leak area.
Take more pictures of the leaking area.
Mark the bolts/cover for a return to mark measurement.
Measure the bolt/stud break away torque.
Measure bolt/stud return to mark torque.
Illustration 1 g06352984
Bagged parts labeling, for location identification.
(1) location 1
(2) location 2
(3) location 3
(4) location 4
(5) location 5
(6) location 6
(7) location 7
(8) location 8
(9) location 9
(10) location 10
Illustration 2 g06352994
Items to be returned (8 sets): one bolt, two washers, one spring
Bag each set and label for location per Illustration 1.
(11) 5P-4116 Hard Washer
(12) 8T-0100 Bolt
(13) 5P-8244 Hard Washer
(14) 244-4500 Spring
Illustration 3 g06353004
Items to be returned (2 sets): one stud, two washers, one spring
Bag each set and label for location per Illustration 1.
(11) 5P-4116 Hard Washer
(15) 131-0353 Stud
(13) 5P-8244 Hard Washer
(14) 244-4500 Spring
Remove bolt/stud, washers (x2), and spring. Place into bags and labeled per Illustration 1, to indicate the location the parts were removed from.
Remove valve cover/seal.
Take pictures of sealing surface of valve cover.
Take pictures of head surface.
Clean the head surface and take more pictures of head surface.
Install a new set of hardware per the standard procedure.
Package the removed valve cover, seal, and ten sets of hardware for return to Caterpillar.
Provide the information, photos, and removed parts to your Cat dealer Technical Communicator (TC) along with this Technical Information Bulletin (TIB) and CPI Number 426580.
Return the parts to Caterpillar service via the Send It Back (SIB) process.