879150T31 Mercruiser PUMP

Start By:
Install the wheel chocks. Refer to Disassembly and Assembly, "Wheel Chock (Front and Rear) - Remove and Install".
Connect the frame lock link. Refer to Disassembly and Assembly, "Frame Lock Link - Separate and Connect".
Release the hydraulic system pressure. Refer to Disassembly and Assembly, "Hydraulic System - Pressure Release/Charge".
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Personal injury can result from hot coolant, steam and alkali.At operating temperature, engine coolant is hot and under pressure. The radiator and all lines to heaters or the engine contain hot coolant or steam. Any contact can cause severe burns.Remove filler cap slowly to relieve pressure only when engine is stopped and radiator cap is cool enough to touch with your bare hand.Cooling System Conditioner contains alkali. Avoid contact with skin and eyes.
Note: Install caps and plugs on all openings in order to prevent dirt or debris from entering the system. Cleanliness is an important factor. Before the removal procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.Note: For easier assembly, mark all hose assemblies, tube assemblies, wire harnesses and cables for identification purposes.
Illustration 1 g00616694
Remove drain plug (1) in order to drain the hydraulic tank for the implements. Refer to Operation and Maintenance Manual, "Hydraulic System Oil - Change" for the correct procedure to drain the tank. The capacity of the hydraulic tank is 723 L (191 US gal).
Illustration 2 g00616695
Remove two drain plugs (2) in order to drain the two hydraulic tanks for the steering and brake system. Refer to Operation and Maintenance Manual, "Steering and Brake System Oil - Change" for the correct procedure to drain the two hydraulic tanks.
The capacity of the steering and brake hydraulic system is 267 L (70.5 US gal).
Illustration 3 g00616697
The view is on the back of the engine end frame under the front of the engine.
Illustration 4 g00616702
The view is on the right side of the engine end frame under the left side of the engine.
Drain the cooling system. Loosen drain plug (3) in order to drain the radiator. Loosen drain plug (4) in order to drain the cooling system.
Refer to Operation and Maintenance Manual, "Cooling System Coolant (ELC) - Change" for the appropriate procedure to drain the cooling system. The capacity of the cooling system is 500 L (132 US gal).
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Disconnect wiring harness (5) for the floodlight.
Repeat Step 6 for the remaining floodlight.
Remove tie straps (6) that fasten the wiring harness that is between the two floodlights to the machine.
Illustration 6 g00603987
Remove eight bolts (7), the washers, and screen (8) from the radiator guard assembly.
Remove six bolts (9), the washers, and screen (10) from the radiator guard assembly.
Remove six bolts (11), the washers, and screen (12) from the radiator guard assembly.
Repeat three Steps 9, 10, and 11 for the three screens on the remaining side of the radiator guard assembly.
Illustration 7 g00604053
The view is under the radiator guard assembly on the right side of the machine.
Remove four bolts (13), the washers, and the spacers that secure the radiator guard assembly to bracket assembly (14) .
Repeat Step 13 for the four bolts on the remaining side of the radiator guard assembly.