Komatsu — Removal of radiator assembly

A Komatsu service procedure — check it applies to your exact model before use.

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Procedure

1. Disconnect the negative (–) terminal from the battery.
2. Remove covers (1) and (2).
3. Drain coolant.
4. Disconnect connector (P24) and overflow tube (3) and remove the sub-tank (4).
5. Remove the mounting bolt and then hoist the engine hood assembly (5) to remove.
6. Remove the clamp and hoses (6), (7), (8) and (9) between the radiator and the engine.
7. Remove radiator front cover (10).
8. Remove undercover.
9. Remove cover (11).
10. Disconnect the lower hose (12).
11. Remove 2 upper mounting bolts (13).
12. Lift and remove radiator assembly (14).

Source: manual:Komatsu PC400-8, PC400LC-8, PC450-8, PC450LC-8, PC400-7, PC400LC-7, PC450-7, PC450LC-7, PC400-6K, PC450LC-6K, PC400-6, PC400LC-6, PC450-6, PC450LC-6.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.