PRODUCT SUPPORT PROGRAM FOR REPAIRING THE OIL SANDS FRONT STRUT ON CERTAIN 797 OFF-HIGHWAY TRUCKS Caterpillar

PRODUCT SUPPORT PROGRAM FOR REPAIRING THE OIL SANDS FRONT STRUT ON CERTAIN 797 OFF-HIGHWAY TRUCKS

Usage:

TEBE5605-01

Show/hide table

08Feb2017

(Revised 20Sep2018)

N030
N061
N184
N18C
N18D
Z850

Show/hide table

After Failure Only (Limited distribution)	PRODUCT SUPPORT PROGRAM FOR REPAIRING THE OIL SANDS FRONT STRUT ON CERTAIN 797 OFF-HIGHWAY TRUCKS
7201		PS53409

Show/hide table

NOTE:	Caterpillar’s obligations under this Service Letter are subject to, and shall not apply in contravention of, the laws, rules, regulations, directives, ordinances, orders, or statutes of the United States, or of any other applicable jurisdiction, without recourse or liability with respect to Caterpillar.
NOTE:	This Program can only be administered after a failure occurs. The decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS53409" as the Part Number and "7755" as the Group Number. Use "96" as the Warranty Claim Description Code and use "Z" as the SIMS Description Code.

Show/hide table

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.

Show/hide table


NOTE:	This Revised Service Letter replaces the 08Feb2017 Service Letter. Changes have been made to the Affected Product.

Show/hide table

TERMINATION DATE

28Feb2019

PROBLEM

Show/hide table

The existing 1490811/">149-0811 Piston Wear Bands can elongate on certain 797 Off-Highway Trucks. If the existing piston wear bands fail, the rod can move out of position causing the seals to fail. In some cases, the HVOF coating can also detach as well, which will also fail the seals.

When the existing piston wear bands fail and the rod moves out of position, the existing lower 347-1758 Wear Bands can also damage the HVOF coating and possibly shorten seal life.

AFFECTED PRODUCT

Show/hide table

Model	Identification Number
797	5YW00197-00201, 204-209, 213-218, 221-222, 240, 244-250, 254-255, 257, 260, 262-265, 268-269
797B	JSM00123, 127-128, 130-131, 135-136, 139-142, 144-149, 151-164, 191-194, 206-212, 216-217, 219-228, 236-238, 244, 256, 261, 265-267, 276-279, 296, 298, 302-303, 308, 311-317, 320-332, 338-353, 364-365, 369-382, 386-389, 393-395, 398-402, 404-409, 412-413, 415, 418, 422, 424, 426, 430, 432, 434-439, 446, 449-451, 453, 456-457, 461-462, 472, 476-488
797F	LAJ00142-00144, 189, 200-203, 227-228, 251-255, 262, 264, 266-269, 276, 283, 285, 287, 292-293, 295-296, 303, 308, 311-314, 316-322, 327-328, 341, 343-344, 350-351, 365, 372-373, 445-446, 458-461, 464-466, 468, 476-477, 483, 491-494, 507-512, 523-525, 554-561, 569-571, 573-584, 596

PARTS NEEDED

Show/hide table

Qty	Part Number	Description
12	8C4032	NUT-HEX
1	8H0273	SEAL-O-RING
8	8T1583	NUT-HEX
8	9X8399	WASHER
8	1078425	BOLT-HEX HEAD
12	1461799	WASHER-HARD
1	1490811	RING-WEAR
1	1490812	RING-WEAR
3	1492695	SEAL-O-RING
5	1492696	RING-BACKUP
8	2179902	WASHER-HARD
12	2179903	WASHER-HARD
12	2248961	BOLT-HEX HEAD
1	3124255	SEAL-U-CUP
1	3124259	SEAL-WIPER
1	3743464	SEAL-U-CUP
2	4546599	RING-WEAR
1	4597518	RING-BACKUP (Note A)
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 5% of dealership population. This is an initial order recommendation only, and the ultimate responsibility for ordering the total number of parts needed to satisfy the program lies with the dealer.

ACTION REQUIRED

Show/hide table

Refer to and follow Disassembly and Assembly manuals to remove and disassemble the front strut:

797F - KENR8382, Disassembly and Assembly
797B - RENR2588, Disassembly and Assembly
797 - RENR2037, Disassembly and Assembly

Note A: The 459-7518 Backup Ring is required only for glands with a U-cup seal groove of 23.84 +/- 0.1. Refer to Image1.

Note B: Inspect the piston and determine if it is 514-3993 Steel Piston with chrome plating, refer to Image2, or a 148-9789 Steel Piston only with no chrome plating. Chrome plate any 148-9789 Steel Piston to achieve the final outer diameter and surface finish. Refer to Image2.

Reassemble per the Disassembly and Assembly procedures with new 454-6599 Wear Ring and install the strut.

Show/hide table

Image1

Image2

SERVICE CLAIM ALLOWANCES

Show/hide table

Product smu/age whichever comes first	Caterpillar		Dealer Suggested		Customer Suggested
Product smu/age whichever comes first	Parts %	Labor Hrs%	Parts %	Labor Hrs%	Parts %	Labor Hrs%
0-10000 hrs, 0-24 mo	100.0%	100.0%	0.0%	0.0%	0.0%	0.0%
10001-16000 hrs, 25-36 mo	33.0%	50.0%	0.0%	0.0%	50.0%	50.0%

Show/hide table

NOTE: This is a 103.0-hour job If there has been a previous repair, part age/hours will apply. Retain a copy of the previous repair invoice in the dealer's records for audit purposes, and specify repair date and machine hours in the "Additional Comments" section of the warranty claim.
Note: 81.0 hours is allowed to remove and install the front strut. Note: 22.0 hours is allowed to disassemble and assemble the front strut. Note: An additional 11.0 hours is allowed if a 148-9789 Steel Piston needs to be chrome plated to become 514-3993. Note: Part age/hours only applies if there was a previous repair in which the customer participated.