SEAL-O-RING 3E6749 - Caterpillar

TEBE5851-02
24May2017
(Revised 16Oct2017)
U-283
A-187
D-224
O-229
Priority
PRODUCT IMPROVEMENT PROGRAM FOR REPLACING THE PRELUBE PUMP RELAY ON CERTAIN CG170-16, G3516H, AND G3520H GENERATOR SETS
1469 4493 1319 PI32769
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.
This Program must be administered as soon as possible.When reporting the repair, use "PI32769" as the Part Number and "7751" as the Group Number, "56" as the Warranty Claim Description Codeand "T" as the SIMS Description code. Exception: If the repair is done after failure, use "PI32769" as the Part Number, "7751" as the Group Number,"96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code.
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.
This Revised Service Letter replaces the 24May2017 (Revised 06Jun2017) Service Letter. Changes have been made to the Action Required.
COMPLETION DATE
TERMINATION DATE
30Nov2017 31May2018
PROBLEM
The engine prelube pump relay needs to be replaced on certain CG170-16, G3516H, and G3520H Generator Sets. The existing relay can fail to close under normal conditions. If the relay fails to close the prelube pump motor will not run.
AFFECTED PRODUCT
Model Identification Number
CG170-16 KSJ00162-00167
G3516H NWH00100-00108, 113-121
G3516H HD GLM00116-00117, 123-124, 132-136, 139, 141-149, 153-157, 161-163, 172-176, 184-188
GLN00116-00127, 132-134, 136-138
G3520H HD GFP00116-00117, 119-121, 124-136, 138-144, 146, 148-153
GFR00115-00178
PARTS NEEDED
Qty
Part Number Description
4 5P4571 TERMINAL
4 7N7221 TERMINAL-BLADE
2 0977234 TERMINAL
2 1606365 SCREW
1 5165815 RELAY AS-SS
In order to allow equitable parts availability to all participating dealers, please limit your initial parts order to not exceed 37% 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
Before completing any rework, review the engine and equipment Operation and Maintenance Manual and follow all safety information and safe work practices.
Replace the current prelube pump 222-4533 Relay with the new 516-5815 Relay.
Follow the steps outlined below for replacing the relay.
Note: The new relay must be wired as shown in Image 3. Do not use the details shown on the face of the relay.
Step 1. Locate the prelube relay assembly.
Step 2. Remove the junction box cover.
Step 3. Remove the old 222-4533 Relay.
Step 4. Install the new 516-5815 Relay with 160-6365 Screws (A).
Step 5. Clip off stud terminals (B) wires, install new 5P-4571 Blade Terminals. (7N-7221 Blade Terminals for 18 AWG) These wires will be connected to the prelube pump motor.
Step 6. Clip off stud terminals (C) wires, install new 5P-4571 Blade Terminals. (7N-7221 terminals for 18 AWG) These wires will be connected to the AC voltage source.
Step 7. Clip off stud terminals (D) wires, install new 097-7234 Blade Terminals. These wires are for the coil side of the relay and should be connected to the 24 VDC signal wires from ECM.
Step 8. Reinstall junction box