CONTROL GP-PARKING BRAKE 1687000 - Caterpillar

Hot parts or hot components can cause burns or personal injury. Do not allow hot parts or components to contact your skin. Use protective clothing or protective equipment to protect your skin.
Shock/Electrocution Hazard! Do not work on this equipment unless you have read and understand the instructions and warnings in the Operation and Maintenance Manuals. Failure to follow the instructions or heed the warnings could result in serious injury or death.
Preparing the Machine
Move the machine to a smooth, level surface that will support the weight of the machine.
Turn off the machine with the engine switch to the OFF position.
Illustration 1 g03055081
Perform Lockout Tag out procedure. Attach a "Do Not Operate"warning tag to the machine start switch or the controls before you perform any service to the machine. These warning tags, Special Instruction, SEHS7332, are available from your Caterpillar DealerAssociated Parts
Table 1
Associated Parts    
QTY     Part Number     Description     VER     CHG    
1     155-2269     Connector Plug As     -     02    
1     155-2281     Spider     -     03    
2     8T-8730     Connector Socket     -     07    
1     189-3158     Arc Suppressor     -     01    
1     ***     16 AWG Orange Wire
102 mm (4 inch)     **     **    
Illustration 2 g03056057
(4) 155-2269 Connector Plug As (5) 155-2281 Spider (6) 8T-8730 Connector Socket (7) 189-3158 Arc Suppressor (8) 16 gage WireDiode Locations
The Affected Serial Numbers for Location One are as follows:
FER154
FLL163
J5M181-184
R4A255-501,564-569
T6A281-283
X4T291-369
Illustration 3 g03055118
Location One: Chassis EEF Main Harness, 347-6652 Rear Chassis Harness As (1), 18 pin round connector R-C40 located on left side of tractor. Look for diode repair (2) secured by two tie straps. See Illustration 3.
If the Diode is not present, proceed to Step 3. The Affected Serial numbers for Locations Two and Three are as follows:
FER155-UP
FLL164-UP
J5M185-UP
R4A502-563,570-UP
T6A284-UP
X4T369-UP
Illustration 4 g03056117
Location Two (3) Diode Location at the Engine Alternator
Location Two is at the engine Alternator on the left side of the engine below the A/C Compressor. Illustration 4 shows engine harness updated with Diode harness 354-2383 Engine Harness As change level "04" (3). The harness is secured to the engine harness with two tie straps.
If the Diode is not present, Proceed to Step 5
Illustration 5 g03055256
Location Three (4) location of Diode on Dove-Tail Clip
Location Three is at engine alternator located on the left side of the machine. Illustration 5 shows engine harness updated with 354-2383 Engine Harness As change level "04". The harness is secured to a dove-tail clip (4) on the upper left alternator mounting bolt.