973D Track-Type Loader Engine Supplement Caterpillar

Engine - Remove

Usage:

973D LCP

Removal Procedure

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Table 1
Required Tools
Tool	Part Number	Part Description	Qty
A	304-1165	Tool Kit	1
B	140-7742	Sleeve	1
C	6V-6146	Load Leveler	1
D	180-3034	Jack Stand Gp	2
D	180-3033	Jack Stand Gp	2

Start By:

Tilt the cab. Refer to Disassembly and Assembly, "Cab - Tilt (Full Tilt)".
Remove the engine enclosure. Refer to Disassembly and Assembly, "Engine Enclosure - Remove".
Remove the fan. Refer to Disassembly and Assembly, "Fan - Remove and Install".
Remove the bottom guards. Refer to Disassembly and Assembly, "Bottom Guard - Remove and Install".
Remove the batteries. Refer to Disassembly and Assembly, "Battery - Remove and Install".

Note: Put identification marks on all hoses, on all hose assemblies, on all wires, 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.

Note: 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.

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NOTICE

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 Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates.

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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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Fuel leaked or spilled onto hot surfaces or electrical components can cause a fire. To help prevent possible injury, turn the start switch off when changing fuel filters or water separator elements. Clean up fuel spills immediately.

Drain the hydraulic system into a suitable container for storage or disposal. Refer to Operation and Maintenance Manual, "Hydraulic System Oil - Change".

Turn the fuel supply valve to the OFF position.

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Illustration 1	g01454634

Disconnect hose (2) and reposition hoses (1) and (2). Disconnect cable assembly (4). Disconnect harness assembly (6) and (8). Disconnect clip (5). Disconnect bracket (3). Remove guard assembly (7) .

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Illustration 2	g01454635

Disconnect belt (9). Refer to Operation and Maintenance Manual, "Belt - Inspect/Adjust/Replace".

Disconnect harness assembly (11). Remove refrigerant compressor (10) from the engine. Reposition and secure harness assembly (11) and refrigerant compressor (10). Disconnect hoses (12) .

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Illustration 3	g01454636

Remove bolts (15) and reposition hoses (13). Disconnect harness assemblies (16). Use Tooling (A) in order to disconnect hose assemblies (19). Disconnect hose assemblies (19) from filter assembly (14).

Disconnect bracket (18). Remove bolts (17) and remove filter assembly (14) .

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Illustration 4	g01454637

Disconnect hose assemblies (20) and (21). Cut cable straps (23) in order to disconnect the harness assembly for the block heater. Disconnect bracket (22) .

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Illustration 5	g01454638

Disconnect connectors (25) and (26) from bracket assembly (24). Disconnect bracket assembly (24) and reposition.

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Illustration 6	g01454639

Disconnect hose assemblies (27), (28), (29), (30), and (31). Cut the cable straps in order to reposition hose assemblies (27) and (29) .

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Illustration 7	g01458405

Disconnect hose (32). Disconnect hose assemblies (33) and (34) .

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Illustration 8	g01458406

Disconnect hose assemblies (35) and (39). Disconnect hoses (37) and (38). Disconnect bracket (36) .

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Illustration 9	g01459007

Disconnect hose assemblies (40), (42), and (44). Disconnect clips (41) and (43). Reposition hose assemblies (40) and (42) .

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Illustration 10	g01458408

Disconnect bracket (46) and reposition hose assembly (44). Disconnect clips (47). Cut the cable straps in order to reposition harness assembly (48). Reposition harness assembly (48) .

Attach Tooling (B) and a suitable lifting device to support assembly (45). The weight of support assembly (45) is approximately 39 kg (85 lb). Remove support assembly (45) .

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Illustration 11	g01458411

Disconnect clip (50). Disconnect harness assemblies (49) and (51). Reposition harness assemblies (49) and (51) .

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Illustration 12	g01459006

Disconnect cable assemblies (52) and (53). Remove clamp (54) .

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Illustration 13	g01458407

Disconnect clip (56). Disconnect hose assemblies (55) and (57) .

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Illustration 14	g01459015

Disconnect hose assemblies (58) .

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Illustration 15	g01459028

Disconnect hose assemblies (59) .

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Illustration 16	g01459029

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Illustration 17	g01459136

Attach Tooling (C) and a suitable lifting device to engine (60). The weight of engine (60) is approximately 1815 kg (4000 lb). Remove bolts (61) and engine (60) .