Product Support Program for the installation of an Additional Isolation Valve to Prevent Bucket Cylinder Drift on certain 301.5, 301.6, 301.6C, 301.8, 301.8C, 302.5, and 302.5C Excavators Caterpillar


Product Support Program for the installation of an Additional Isolation Valve to Prevent Bucket Cylinder Drift on certain 301.5, 301.6, 301.6C, 301.8, 301.8C, 302.5, and 302.5C Excavators

Usage:

REBE1085-00

03Oct2006


L240
L24A
X190
Z800

 
Before/After
 (Limited distribution) 
  

PRODUCT SUPPORT PROGRAM FOR THE INSTALLATION OF AN ADDITIONAL ISOLATION VALVE TO PREVENT BUCKET CYLINDER DRIFT ON CERTAIN 301.5, 301.6, 301.6C, 301.8, 301.8C, 302.5, AND 302.5C EXCAVATORS

5457
PS42265
NOTE:

This Program must be administered either before or after failure. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS42265" as the Part Number and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and "T" as the SIMS Description code. If administered after failure, use "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 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.


TERMINATION DATE

31Oct2008

PROBLEM

Bucket cylinder drift may occur during the operation of a rotating grapple on certain 301.5, 301.6, 301.6C, 301.8, 301.8C, 302.5, and 302.5C Excavators. Machines that are configured with a quick coupler for work tools and with secondary auxiliary lines experience the bucket cylinder drift. The bucket cylinder drift affects machines with a diverter valve at the head end of the bucket cylinder and without a diverter valve at the rod end of the bucket cylinder.

AFFECTED PRODUCT

Model Identification Number
*******Group  1*******
301.5  3YW04093, 4218-4219, 4239, 4305-4324, 4499-4500, 4502-4503, 4706-4710, 4734-4753, 4772-4776, 4833-4834, 4836, 4878, 4885, 4887, 4891, 4894, 4962-4967, 5029-5030, 5033, 5036-5038, 5040-5044
301.6  BDH01029, 1035, 1038, 1085-1087, 1098-1102, 1177-1180, 1199-1208, 1211-1230, 1234-1236, 1238, 1240, 1242, 1262-1266, 1275-1280, 1331, 1339, 1341
301.6C  JBB00312-00316, 318, 321-322, 380-386, 411, 434-493, 498-507, 556-560, 595-599, 603-618, 623-631, 641-675, 677
301.8  BFA02794, 2968-2978, 2999, 3001-3002, 3090-3093, 3200, 3267, 3274, 3277, 3280, 3285, 3290, 3292, 3311-3324, 3335-3337, 3339-3344, 3416, 3420-3423, 3425-3426, 3430, 3432-3441, 3734-3748, 3836-3850, 3868-3872, 3895, 3898-3908, 3932-3938, 3940-3941, 4081-4088, 4090-4091, 4093-4102, 4147-4164
301.8C  JSB00336-00338, 340-345, 347-350, 382, 385, 387, 389, 414-428, 478, 482, 484-486, 494, 531-533, 537-555, 557, 559, 561, 563, 565, 569, 574-578, 623-632, 654-717, 719-728, 730-733, 738, 740, 796, 800, 836-869, 934-943, 952-953, 958-1020, 1024-1025, 1082-1095, 1098-1107, 1109, 1111, 1113, 1115, 1117-1120, 1124-1131, 1140, 1142-1143, 1145-1184, 1186-1187, 1189-1195
*******Group  2*******
302.5  4AZ05564, 5701-5715, 5747-5759, 5777-5787, 5813-5822, 6019-6020, 6068, 6166-6170, 6382-6385, 6387-6388, 6390-6391, 6760-6768, 6848, 6850-6851, 6853-6858, 6860, 6862, 6864-6866, 6871-6872, 6874-6875, 6885-6893, 6895, 6897, 6899, 6901, 6903, 6905, 6907, 6909, 7005-7009, 7158-7159, 7166-7167, 7169, 7202, 7204-7208, 7210-7213, 7218-7222, 7259-7263, 7266-7280, 7398-7400, 7408-7410, 7412-7415
302.5C  GBB00347, 350, 352-353, 357-360, 362, 468-469, 471-472, 513-517, 519-521, 523-526, 556-565, 709-721, 727-728, 774-786, 789, 792-800, 827-841, 843-847

PARTS NEEDED

Qty

Part Number Description
*******Group 1*******
1 1293178 LOCKNUT
4 1388454 SCREW-TRUSS HEAD
1 1565726 VALVE-BALL
1 2681638 TEE-SWIVEL ORFS
1 2813948 HOSE AS
1 2813949 BRACKET
2 3J1907 SEAL-O-RING
1 5C9553 BOLT
2 6V8397 SEAL-O-RING
1 6V8636 CONNECTOR-SEAL
1 8T4205 WASHER-HARD
*******Group 2*******
1 1293178 LOCKNUT
4 1388454 SCREW-TRUSS HEAD
1 1565726 VALVE-BALL
1 2681638 TEE-SWIVEL ORFS
1 2813949 BRACKET
1 2873088 HOSE AS
2 3J1907 SEAL-O-RING
1 5C9553 BOLT
2 6V8397 SEAL-O-RING
1 6V8636 CONNECTOR-SEAL
1 8T4205 WASHER-HARD

ACTION REQUIRED

The installation of an additional isolation valve in the hydraulic line for the rod end of the bucket cylinder prevents bucket cylinder drift. The isolation valves at the head end of the bucket cylinder and at the rod end of the bucket cylinder must be closed when the secondary auxiliary circuit is active.

SERVICE CLAIM ALLOWANCES

Product smu/age whichever comes first
Caterpillar
Dealer Suggested
Customer Suggested
Parts %
Labor Hrs%
Parts %
Labor Hrs%
Parts %
Labor Hrs%
*******Group 1*******
0-3000 hrs,
0-36 mo 
100.0%
100.0%
0.0%
0.0%
0.0%
0.0%
 NOTE: This is a 1.0-hour job for Group 1

Product smu/age whichever comes first
Caterpillar
Dealer Suggested
Customer Suggested
Parts %
Labor Hrs%
Parts %
Labor Hrs%
Parts %
Labor Hrs%
*******Group 2*******
0-3000 hrs,
0-36 mo 
100.0%
100.0%
0.0%
0.0%
0.0%
0.0%
 NOTE: This is a 1.0-hour job for Group 2



PARTS DISPOSITION

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


Rework Procedure


 
1. Check the bracket on the left hand side of the stick. The bracket is for mounting the secondary auxiliary coupler. Drill hole (C) in the bracket, if the hole is not already present. Refer to Illustration 1.1.1.
Image1.1.1
 
(A) 7.5 mm (0.3 inch)
(B) 42.5 mm (1.7 inch)
(C) 7 mm (0.28 inch) Diameter
 
2. Remove the existing hose and tee assembly from the connector on the rod end of the bucket cylinder.
 
3. Install the replacement parts. Refer to Illustration 1.4.1. and 1.5.1.
Image1.4.1
 
Isolation Valve In The Secondary Auxiliary Circuit
(D) Existing connector for the rod end of the bucket cylinder
(E) Existing coupler assembly for the secondary auxiliary circuit
Image1.5.1
 
( 1 ) Use With 301.6C And 301.8C
( 2 ) Use With 302.5C
 
 

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