BLOCK 7N0850 - Caterpillar

Caterpillar: Confidential Yellow
PSP FOR IMPROVED AIR FILTER ELEMENT ACCESSIBILITY ON IT12 INTEGRATED TOOLCARRIERS - MAILED US AND CANADA, COFA, COSA, LIM ITED CACO, LIMITED CFEL
  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.
PRODUCT SUPPORT PROGRAM FOR IMPROVED AIR FILTER ELEMENT ACCESSIBILITY ON IT12 INTEGRATED TOOL CARRIERS, 1054, PS4081 U-90 A-42.1 AU-69 C-89 E-56.1 O-64 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 "PS4081" as Part Number and "7755" as Group Number. Termination Date
September 31, 1987
Problem
Reports from the field indicate that it is difficult to replace the air filter element on IT12 Integrated Tool Carriers. The cause of the problem is insufficient clearance between the hydraulic pump outlet lines and the hood and guards. A change has been made to the routing of the hydraulic pump lines.
Affected Product
Model Identification Number IT12 2YC1 - 456, 461-464, 467-476, 478-480, 483-527, 531, 532, 535, 537, 539, 541-544, 549-559, 564-570, 572-574, 579-587, 589-601, 603-630, 632, 634-671, 673-687, 689-693, 697-738 4NC1 - 459, 461, 464-471, 477-480, 482-486, 488, 489, 492, 494-498, 500, 501, 504, 507-517, 519, 527-539, 542-546, 552-574, 577, 580-606, 609, 613-617, 623, 626-630, 632, 633, 635-637, 641-649, 651-666, 669-676, 678-689, 692-694, 696-699, 701, 713-715, 717-725, 729-733, 736, 738-742
Parts Needed
1 - 307944 Elbow 1 - 5G6541 Tube As. 1 - 5G6540 Tube As. 1 - 3D2824 Seal
Action Required
Install the new parts as shown in the illustration. (SEE ILLUSTRATION) WARRANTY ALLOWANCES (SEE ILLUSTRATION)
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.