Komatsu HM400-5, Operation & Maintenance Manual

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If there is any leakage of fuel, check the tightening condition of the filter cartridge.
If there is still leakage of fuel, follow steps 2 and 3 to remove the filter cartridge, then check the packing
surface for damage or foreign material. If any problem is found, replace the cartridge with a new part, then
repeat steps 4 to 9 to install the filter cartridge.
11. Close the engine hood.
METHOD FOR REPLACING FUEL TANK BREATHER ELEMENT
k k
WARNING
Immediately after the engine is stopped, its parts and oil are still very hot and may cause burn injury.
Wait for the temperature to go down, and then start the work.
When getting on or off the machine with carrying an element, a
tool, etc., place it once in part (A) to ensure your safety.
1.
Remove mounting bolts (2) of hydraulic tank top cover (1).
2.
Remove nut (4) of breather assembly (3).
3.
Remove cover (5).
4.
Replace breather element (6) with a new one.
5.
Install cover (5) and nut (4).
6.
Install cover (1) with bolts (2).
MAINTENANCE MAINTENANCE PROCEDURE
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