140M and 150 Motor Graders Engine Supplement Engine - Remove Caterpillar

Removal Procedure

Start By:

1. Remove the engine enclosure. Refer to Disassembly and Assembly, "Engine Enclosure - Remove".

2. Remove the hydraulic and steering piston pump. Refer to Disassembly and Assembly, "Piston Pump (Hydraulic and Steering) - Remove".

3. Remove the gear pump. Refer to Disassembly and Assembly, "Gear Pump (Transmission Charging and Scavenge) - Remove".

4. Remove the fan pump. Refer to Disassembly and Assembly, "Piston Pump (Fan Drive) - Remove".

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Personal injury can result from hydraulic oil pressure and hot oil. Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system. Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.

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At operating temperature, the engine coolant is hot and under pressure. Steam can cause personal injury. Check the coolant level only after the engine has been stopped and the fill cap is cool enough to touch with your bare hand. Remove the fill cap slowly to relieve pressure. Cooling system conditioner contains alkali. Avoid contact with the skin and eyes to prevent personal injury.

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Personal injury can result from contact with refrigerant. Contact with refrigerant can cause frost bite. Keep face and hands away to help prevent injury. Protective goggles must always be worn when refrigerant lines are opened, even if the gauges indicate the system is empty of refrigerant. Always use precaution when a fitting is removed. Slowly loosen the fitting. If the system is still under pressure, release it slowly in a well ventilated area. Personal injury or death can result from inhaling refrigerant through a lit cigarette. Inhaling air conditioner refrigerant gas through a lit cigarette or other smoking method or inhaling fumes released from a flame contacting air conditioner refrigerant gas, can cause bodily harm or death. Do not smoke when servicing air conditioners or wherever refrigerant gas may be present. Use a certified recovery and recycling cart to properly remove the refrigerant from the air conditioning system.

Note: Put identification marks on all hoses, on all hose assemblies, on all harness assemblies, and on all tube assemblies for installation purposes. Plug all hose assemblies and all tube assemblies. This helps to prevent fluid loss, and this helps to keep contaminants from entering the system.

1. Recover the air conditioner refrigerant from the air conditioner system. Refer to Operation and Maintenance Manual, "Capacities (Refill)" for the correct charge that is used in the machine that is being serviced. Refer to Service Manual, SENR5664, "Air Conditioning and Heating Systems with R-134a Refrigerant" for the procedure. Refer to Special Publication, NENG2500, "Air Conditioning Tools" for the tools.

2. Drain the power train oil from the machine into a suitable container for proper storage or for disposal. Refer to Operation and Maintenance Manual, "Capacities - Refill" for the capacity of the power train oil.

3. Drain the hydraulic oil from the machine into a suitable container for proper storage or for disposal. Refer to Operation and Maintenance Manual, "Capacities - Refill" for the capacity of the hydraulic oil.

4. Drain the coolant from the cooling system into a suitable container for proper storage or for disposal. Refer to Operation and Maintenance Manual, "Capacities - Refill" for the capacity of the cooling system. Refer to Operation and Maintenance Manual, "Cooling System Coolant (DEAC) - Change" or Operation and Maintenance Manual, "Cooling System Extended Life Coolant - Change" for the proper draining procedure.
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   Illustration 1	g01416925

5. Disconnect harness assemblies (2), (3), (4), and (5). Remove harness assembly (1). Disconnect hose assemblies (6) and (7).
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   Illustration 2	g01416931

6. Remove nut (8) and (9). Reposition the harness assemblies. Disconnect harness assembly (10).
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   Illustration 3	g01417116

7. Remove bolt (11). Remove mounting hardware from harness assembly (12). Disconnect harness assembly (12). Reposition harness assembly (12).
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   Illustration 4	g01417123

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   Illustration 5	g01417124

8. Loosen clamp (13) and (14). Remove tube (15).
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   Illustration 6	g01417160

9. Disconnect cable assembly (16).
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   Illustration 7	g01417164

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   Illustration 8	g01417165

10. Remove bolt (17) and tube assemblies (18) and (19). Loosen clamp (20).
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    Illustration 9	g01983407

11. Remove tube assembly (21).
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    Illustration 10	g01417196

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    Illustration 11	g01417198

12. Disconnect heater hose (22). Disconnect heater hose (23).
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    Illustration 12	g01417204

13. Remove bolts (24). Remove elbow (25).
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    Illustration 13	g01417271

14. Attach Tooling (A) and a suitable lifting device onto engine (26).
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    Illustration 14	g01983473

15. Disconnect hose assembly (27). Remove bolts (28).
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    Illustration 15	g01417277

16. Remove bolts (29). Use Tooling (A) and a suitable lifting device in order to remove engine (26). The weight of engine (26) is approximately 1088 kg (2400 lb).