Usage:
CONFIDENTIAL TIBU2671-00
|
TECHNICAL INFORMATION BULLETIN |
July 2, 2003 |
|
Wheel-Tractor Scraper |
621G (ALP1-Up, CEN1-Up) 623G (ARW1-Up, CES1-Up) 627G (AXF1-Up, AYK1-Up, CEX1-Up, (CEZ1-Up) |
|
Component Code(s) |
4051 |
SUBJECT: Certain Wheel-Tractor Scrapers May Experience Leaking at the Final Drive Oil Drain Hole
PROBLEM:
The final drive oil drain hole on some 8W-9697 Planet Carriers is improperly located. As a result, the drain hole on the 8W-9804 Wheel and the drain hole on the 8W-9697 Planet Carrier do not align. The misalignment causes the seal to be offset allowing oil to leak out.
The misalignment can be identified by inspecting the drain hole on the assembled wheel. If the drain hole is properly aligned, nearly the entire circumference of the 6F-4855 O-ring inner diameter will be seen. If the O-ring is misaligned then the carrier needs to be modified.
View of Final Drive Drain Plug
Detail A shows misaligned drain holes
Graphic shows example of misaligned O-ring
In the example above, approximately 50% of the O-ring diameter is visible.
SOLUTION:
Inspect all affected machines and report all findings to Nathan Barnes. Send the information by e-mail to the following address:
barnes_nathan_b@cat.com
Include the following information in your e-mail:
|
Machine S/N |
|
|
|
Machine Hours |
|
|
|
|
Leaking (Y/N) |
% of O-ring diameter that is visible |
|
Left front wheel |
|
|
|
Right front wheel |
|
|
|
Left rear wheel (627 only) |
|
|
|
Right rear wheel (627 only) |
|
|
SIMS tickets for leaks due to this issue that are not repaired should use PD Code 38 and should report the part causing the failure as 8W-9697 Planet Carrier.
A service letter will be published with the modification details and support information. If the machine can?t wait for the service letter, contact Nathan Barnes at (217) 475-4865, for a repair procedure.
COPYRIGHT 2003 CATERPILLAR
ALL RIGHTS RESERVED