Removal and installation of engine assembly 1
Removal
k Stop the machine on level ground and set the frame lock bar.
k Lower the work equipment to the ground completely and stop the engine. Apply the parking brake and put the blocks under the wheels.
k Disconnect the negative terminal (–) of the battery before starting with the work.
1.Remove the radiator assembly, referring to “Removal and installation of radiator assembly”.
q Overall view of machine right side
201 Engine and cooling system, Part 1 Removal and installation of engine assembly
3.Remove air hose (2). [*1]
4.Remove komaclone hose and tube assembly (3). [*2]
5.Disconnect dust indicator hoses (4).
6.Remove air cleaner (5). [*3]
7.Disconnect connector E15 (6).
8.Disconnect wiring harness (7).
9.Remove air cleaner bracket (8).
23.Disconnect starting motor terminal (26).
24.Disconnect connector ER1 (27).
25.Disconnect connector ER2 (28).
26.Disconnect connector ER3 (29).
27.Disconnect wiring harnesses (30).
28.Disconnect grounding wire ER06 (31).
29.Disconnect engine grounding wire (32).
30.Remove engine mount bolts (33) and (34). [*6]
31.Lift and remove engine assembly (35), using Tshaped lifting tool [1].
a Confirm that the wirings and hoses are disconnected properly, and sling the engine assembly slowly.
4 Engine assembly: 3,200 kg
a F: Rear side lifting hook
201 Engine and cooling system, Part 1 Removal and installation of engine assembly
a Front right side and left side lifting hooks are provided in the bottom.
Removal and installation of radiator assembly 1
Removal
k Park the machine on flat ground and set the safety bar to the frame.
k Lower the work equipment to the ground completely and stop the engine. Apply the parking brake and put the blocks under the wheels.
k Loosen the filler cap of the hydraulic tank gradually to release the residual pressure from the hydraulic tank.
1.Remove cover (1).
2.Drain the engine coolant.
6 Coolant: 160 l
3.Remove the engine hood and covers, referring to “Removal and installation of engine hood assembly”.
4.Remove cover (2).
5.Disconnect cover (3).
6.Disconnect 2 hoses (4) from the reservoir tank.
201 Engine and cooling system, Part 1 Removal and installation of radiator assembly
7.Disconnect connector G05 (5) and disconnect the clip of the wiring harness.
8.Disconnect right and left chains (6).
9.Disconnect hoses (7) and (8).
10.Remove reservoir tank (9).
11.Disconnect hoses (10).
12.Remove covers (11) and (12).
a Take care in this operation not to damage the aftercooler core.
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201 Engine and cooling system, Part 1
Removal and installation of radiator assembly
13.Remove right and left side bars (13).
14.Remove cover and frame assembly (14). a Take care in this operation not to damage the aftercooler core.
15.Disconnect air conditioner hose clamps (15) from radiator guard (16).
16.Open radiator grille (17) and remove 3 fan guards (18).
17.Disconnect fan drain hose (19), fan inlet hose (20) and fan outlet hose (21).
18.Remove clamp (22).
19.Disconnect connectors G06 (23) and GR1 (24) situated in the rear left side of the radiator. 20.Disconnect clamp (30). a BB: Back buzzer
3 mounting bolts of left side and then open fan motor and support assembly
