2007/10/08 A New Main Power Relay and Starter Relay are Now Used {4493, 7499} Caterpillar


A New Main Power Relay and Starter Relay are Now Used {4493, 7499}
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Load Haul Dump:
R1300G (S/N: LJB1-UP)

Description of Change: A new main power relay and starter relay are now used in the electrical and starting system.

Adaptable To: The new 254-3783 Magnetic Switch is adaptable to R1300G (S/N: LJB1-1238).

The new 254-3783 Magnetic Switch is effective in production with R1300G (S/N: LJB1239-UP).

Table 1
Former Part Number     Description     Replacement Part Number    
241-8368     Magnetic Switch     254-3783    

Procedure to Install the New Main Power Relay and Starter Relay

Table 2
Required Parts    
Qty     Part Number     Description    
2     254-3783     Magnetic Switch    
2     130-5300     Clip    
1     2B-0941     Spacer    
1     7X-0290     Bolt    
1     1DE0063 (2030357)     Cable Strap    
1     6EL2260 (2191509)     Harness    
1     1DE3995 (3033720)     Harness    

Main Power Relay Installation

  1. Turn the disconnect switch and the key start switch to the OFF position.



    Illustration 1g01412571

    Seat removed for photographic purposes

  1. Remove cover (1) .



    Illustration 2g01412575

    (2) 241-8368 Magnetic Switch

  1. Remove and discard 241-8368 Magnetic Switch (2) .

  1. Install 254-3783 Magnetic Switch .

  1. Install cover (1) .

Starter Relay Installation

  1. The disconnect switch and the key start switch remain in the OFF position.



    Illustration 3g01414148

    (3) 241-8368 Magnetic Switch

  1. Remove two bolts (1), move bracket (2) to gain access to harness connectors.

  1. Remove and discard 241-8368 Magnetic Switch (3) .



    Illustration 4g01414149

    (4) 130-5300 Clip

    (5) 2B-0941 Spacer

    (6) 7X-0290 Bolt

  1. Install two clips (4), spacer (5) and bolt (6) .



    Illustration 5g01414150

    (7) 1DE0063 Cable Strap

    (8) 6EL2260 Harness

    (9) 1DE3995 Harness

    (10) 254-3783 Magnetic Switch




    Illustration 6g01414151

    (8) 6EL2260 Harness

    (9) 1DE3995 Harness

    (10) 254-3783 Magnetic Switch

  1. Connect harness (8), harness (9) and magnetic switch (10) .



    Illustration 7g01417850

    (10) 254-3783 Magnetic Switch

  1. Install 254-3783 Magnetic Switch (10) to bracket (2) using existing bolts and washers.

  1. Install bracket (2) .

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