CAT Water Delivery System (WDS) and 785D WTR OEM Off-Highway Truck/Tractor Caterpillar

Removal Procedure

Start By:

1. Remove the WDS motor.

Note: Put identification marks on all lines, on all hoses, on all wires, and on all tubes for installation purposes. Mark parts as needed to aid in assembly. Plug all lines, hoses, and tubes. This action helps to prevent fluid loss and helps to keep contaminants from entering the system.

Note: Cleanliness is an important factor. Before the removal procedure, clean the exterior of the components to dirt from entering the internal mechanism. Precision components can be damaged by contaminants or by dirt.

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Illustration 1	g03385216

1. Remove coupler (1) from the input shaft of water pump (2) .

   Note: Coupler (1) may remain on the output shaft of the WDS motor when the motor is removed. In this case, to prevent loss of the coupler, remove the coupler from the WDS motor

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Illustration 2	g03385217

2. Disconnect water pump breather line (3).

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Illustration 3	g03385218

Note: The connecting hardware varies with customer installation of water pump (2).

3. Remove the eight bolts that connect the water pump outlet to adapter (5) on the spray bar.

4. Remove the eight bolts that connect the water pump to water tank outlet (6) .

5. Remove the four bolts that connect the water pump to mounting plate (4) on the water tank.

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Illustration 4	g03385219

6. Remove water pump (2) .

   Note: Water pump (2) is supplied with threaded lift point (7). Use a suitable lifting device to remove the water pump. The water pump weighs approximately 146 kg (322 lb.).

Installation Procedure

1. Install water pump (2) in the reverse order of removal.