2008/01/28 The Lighting Wiring Group is Updated {1408, 1429, 7553} Caterpillar


The Lighting Wiring Group is Updated {1408, 1429, 7553}
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2008/01/28 [SEPD0925]
ELECTRICAL AND STARTING SYSTEM
WIRING GP
2008/01/28 The Lighting Wiring Group is Updated {1408, 1429, 7553}
Off-Highway Truck:
777F (S/N: JRP1-UP)

ReferenceSpecial Instruction, REHS1841, "General Welding Procedures"

Description of Change:




Illustration 1g01420211

The former routing of the harness




Illustration 2g01420219

The new routing of the harness

The position of the chassis harness assembly has changed. Formerly, the chassis harness assembly was routed on the outside of the walkway on left platform. Now, the chassis harness assembly is routed in the middle of the walkway on the left platform. The new route will better protect the harness during operation.

Adaptable To: The new 298-4580 Chassis Harness As is now used in the 247-5619 Lighting Wiring Gp (Payload) (Signal) (Lamp). The former 247-5624 Chassis Harness As was removed from the 247-5619 Lighting Wiring Gp (Payload) (Signal) (Lamp).

The new chassis harness assembly is not adaptable to earlier machines. The new chassis harness assembly became effective in production with the machine JRP603-UP.

In order to protect the former 247-5624 Chassis Harness As that is on machines JRP1-602, two new plates can be installed to the fender. Two new 314-8400 Plates are available through the parts distribution system. Use the following procedure in order to update the earlier machines.

Table 1
Parts Needed to Update the Wiring Harness.    
Item     Qty     Part Number     Description    
1     4     8T-4185     Bolts    
2     4     8T-4121     Hard Washers    
3     4     1W-4955     Spacers    
4     2     183-7602     Bosses    
5     2     314-8400     Plates    

  1. Remove the bolts and washers from the harness clips that are on the beam.

    Note: Leave the cable straps on the clips on the ladder.




    Illustration 3g01420311

  1. By using two bolts (1), two hard washers (2) and two spacers (3), attach one plate (5) to the front beam.



    Illustration 4g01420316

  1. Place second plate (5) even with the bottom of the left beam.

  1. By using a marker, mark the position of the slots in the plate on the beam.



    Illustration 5g01420317

    (W1) Make a 3 mm (0.12 inch) fillet weld around the two bosses.

  1. Refer to Special Instruction, REHS1841, "General Welding Procedures". By using the proper welding procedures, weld the two bosses (4) to the beam.



    Illustration 6g01420471

  1. By using two bolts (1), two hard washers (2) and two spacers (3), attach second plate (5) to the beam.

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