Komatsu HM400-5, Operation & Maintenance Manual

Page: 406 / 446

METHOD FOR CHECKING EXHAUST PIPE FIRE PREVENTION COVER
k k
WARNING
Immediately after the engine is stopped, all the parts are still very hot, and may cause burn injury.
Accordingly, wait until they have cooled down before starting the work.
Exhaust pipe fire prevention covers (3) and (4) may suffer material deterioration or damage depending on the
conditions of use and the operating environment of the machine.
1.
Open the engine hood.
2.
Remove covers (1) and (2).
3.
Check exhaust pipe fire prevention covers (3) and (4).
If any part is deteriorated or damaged, ask your Komatsu
distributor for replacement.
4.
Install covers (1) and (2).
5.
Close the engine hood.
EVERY 4500 HOURS MAINTENANCE
Maintenance for every 50, 250 and 500 hours should be performed at the same time.
METHOD FOR CLEANING KDPF
Contact your Komatsu distributor for cleaning of the KDPF.
METHOD FOR CLEANING DEF TANK
Ask your Komatsu distributor for cleaning of the DEF tank.
METHOD FOR CLEANING FUEL DOSER
For cleaning the fuel doser, ask your Komatsu distributor.
METHOD FOR CHECKING FOR MISSING FUEL SPRAY PREVENTION CAP ON
FUEL DOSER PIPING, HARDENING OF RUBBER
The fuel spray prevention cap acts to prevent the fuel from coming into contact with high-temperature parts of
the engine and causing a fire if the fuel should leak or spray out.
Check visually and touch by hand to check that there are no missing caps, loose bolts or hardening of the rub-
ber.
If there are any problems, the parts must be replaced. Ask your Komatsu distributor for replacement.
EVERY 6000 HOURS MAINTENANCE
Perform the periodic maintenance work of every 50, 250, 500, 1000 and 2000 hours of operation at the same
time.
MAINTENANCE PROCEDURE MAINTENANCE
4-84