PRODUCT SUPPORT PROGRAM FOR VERIFYING TORQUE ON CERTAIN 3126, 3126B, 3126E ENGINES, AND 325C L EXCAVATORS Caterpillar

PRODUCT SUPPORT PROGRAM FOR VERIFYING TORQUE ON CERTAIN 3126, 3126B, 3126E ENGINES, AND 325C L EXCAVATORS

Usage:

SEBE8141-01

September 5, 2002
(Revised September 2002)
U-233
A-163
AU-176
S-175
H-173
O-193
TT-4
TM-7

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*before or* *after failure*	PRODUCT SUPPORT PROGRAM FOR VERIFYING TORQUE ON CERTAIN 3126, 3126B, 3126E ENGINES, AND 325C L EXCAVATORS
7757		PS41101

NOTE: This Program can 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 "PS41101" as the Part number and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and use "T" as the SIMS Description Code. If administered after failure, use "96" as the Warranty Claim Description Code and use "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.

NOTE: This Revised Service Letter replaces the September 5, 2002 Service Letter. A change has been made to the Affected Product.

TERMINATION DATE

September 30, 2004

PROBLEM

The 2051274 3-valve cylinder head group has plugs with improper torque. Plugs in head are not properly torqued that may result in oil, water, or fuel leaks on certain 3126, 3126B, 3126E Engines, and 325C L Excavators.

AFFECTED PRODUCT

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Model	Identification Number
3126	7JZ4374-4563 6PZ952-995
3126B	9SZ11572-12048 1AJ418-422 BEJ850-1104 BKD550-594 3GS1001-1052
3126E	CKM49851-56085
325C L	BFE281-330

PARTS NEEDED

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Qty	Part Number	Description
1	1J9671	SEAL-O-RING
2	3J1907	SEAL-O-RING
1	2M9780	SEAL-O-RING
5	6V5048	SEAL-O-RING
1	6V5049	SEAL-O-RING
2	9X7712	SEAL-O-RING

ACTION REQUIRED

See the attached Rework Procedure.

SERVICE CLAIM ALLOWANCES

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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
0-24 mos	100%	1.9	0	0	0	0
NOTE: This is a 1.9?hr job.

PARTS DISPOSITION

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

Attach. (1-Rework Procedure)

Rework Procedure

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Part Number	Part Description
2M9780	176 Water (left rear)
3J1907	105 Fuel (rear)
3J1907	175 Fuel (left rear)
1J9671	180 Oil (top)
6V5048	148 Oil (side)
6V5048	149 Oil (side)
6V5048	147 Oil (side)
6V5048	146 Oil (side)
6V5048	145 Oil (side)
6V5048	144 Oil (side)
9X7712	95F Oil (front)
9X7712	95R Oil (rear)

Using the 3/16" Allen head click wrench set to 12NM. Verify torque on plugs:

149

147

146

145

144

Using the 3/8" Allen Head Click wrench set to 73NM. Verify torque on plugs:

176

Using the 3/16" Allen Head click wrench set to 15 NM, Verify torque on plugs:

180

Using the 1/4" Allen Head Click wrench set to 26 NM, Verify torque on plugs: 105

175

148

NOTE: See Illustration 1 for hole locations.

NOTE: When beginning this procedure, please note the starting position of the wrench for each plug. Tighten until the wrench clicks. If wrench travels more than 90 degrees, remove plug and inspect o-ring, the threads of the plug and head for damage. If okay, reinstall plug and torque. If o-ring is damaged then replace o-ring, install and torque plug. If the threads are damaged, repair as necessary

If okay reinstall plug and torque. If O-Ring is damaged then replace O-Ring, install and torque plug. If the threads are damaged, repair as necessary.