HOSE AS 3740159 - Caterpillar

Introduction
There are isolated instances where the control panel power supply cable is connected to the incorrect location. The power supply is connected to the incoming side of the glow plug circuit breaker. The circuit is being supplied with unprotected battery power.Resolution
Do not operate or work on this engine or generator set unless you have read and understand the instructions and warnings in the Operation and Maintenance Manuals.Failure to follow the warnings and instructions could result in injury or death. Contact any Caterpillar dealer for replacement manuals. Proper care is your responsibility.
Table 1
Required Parts    
Part Number     Description    
451-8348     Starting Aid Harness As    
Illustration 1 g03769437
(1) 451-8348 Starting Aid Harness As
Illustration 2 g03769556
View of the wiring diagram for the glow plug circuit before and after the modification
Prepare the generator set for maintenance. Refer to Operation and Maintenance Manual, "Generator Isolating for Maintenance".
Illustration 3 g03769457
Remove the four bolts from cover (2). Remove cover (2) .
Illustration 4 g03769459
Remove Glow Plug Intermediate Relay (3) .
Remove the feed wire that is connected to the 20 amp circuit breaker and the glow plug relay base (not shown).
Disconnect Connector (6). Remove Cable (4) and Connector (6) .
Disconnect Cable (5) from terminal 3 of connector (7) and the battery isolator switch. Remove Cable (5) .
Illustration 5 g03769437
(1) 451-8348 Starting Aid Harness As
Illustration 6 g03769581
Install Terminal (A) of Harness (1) to 20 Amp Circuit Breaker (8) .
Install Terminal (C) of Harness (1) to Glow Plug Intermediate Relay (3) .
Connect Terminal (B) of Harness (1) to Connector (6) .
Connect Terminal (D) of Harness (1) to Connector (7) .
Install Glow Plug Intermediate Relay (3) .
Install cover (2) .
Reconnect battery voltage.