Hokuetsu AIRMAN PDS185S-6EZ1 Instruction Manual page 48

5. Periodic Inspection/Maintenance
5.5.11 Check and clean supply pump strainer
Every 500 hours
C
A

Do not pull out the supply pump strainer inside as it cannot be disassembled.
(For details, refer to the engine operation manual.)
5.5.12 Clean the filter for fuel air-bleeding electromagnetic pump
Every 500 hours
B
5.5.13 Clean exterior of the radiator・oil cooler
Every 1,000 hours
Oil cooler
B
A180812
A
C
A000020-2
A
Radiator
A190348

Loosen the supply pump strainer [A] (joint bolt
built-in type) and remove it. After washing it with
diesel oil, blow dust and dirt off with high pressure
air. Replace the gasket [B] and [C] as well.
(For part number, See 5.4)

In case the conditions of lowered engine power and
engine stop will not be improved even after the
supply pump strainer [A] (joint bolt built-in type)
has been cleaned, it should be replaced.
(For part number, See 5.4)

Turn the cap [A] to the left to remove and clean
filter [B] inside.

Replace the gasket [C] whenever the filter [B] is
removed.
(For part number, See 5.4)

Prepare a container as the fuel inside may spill out.

When the fin tubes diaphragm [A], of a radiator,
and an oil cooler are clogged with dust or other
foreign materials, the heat exchange efficiency
drops and this will raise coolant temperature and
discharge air temperature. These tubes and fins
should be cleaned depending on the state of clogged
tubes diaphragm, even before maintenance
schedule.

Do not use a high pressure washer to protect fin
tubes from being damaged.

Take steam cleaning with removing cooler when
there is a lot of dirt.
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