Komatsu PC88MR-10 Shop Manual page 507

11.Check for fuel leakage on filter seal surface. If
the fuel leaks, check filter cartridge if it is
tightened. If the fuel still leaks, follow steps 1) to
5) to remove the filter cartridge, then check the
packing surface for damage or foreign material.
If any damage or foreign material is found in the
packing, replace the cartridge with a new one,
then repeat steps 6) to 10).
a11. Check of engine oil level (in oil pan) and
type
Immediately after the engine is stopped, its
parts and oil are still very hot, and may cause
burn injury. Accordingly, wait until all parts
have cooled down before starting the work.
a When checking the oil level after the engine has
been operated, wait at least 15 minutes after
stopping the engine.
a If the machine is at an angle, make it level
before checking.
a When the ambient temperature is low, water or
emulsified matter may stick to the oil level gauge,
oil filler cap, etc. or the drained oil may be milky
white because of water vapor in the blowby gas.
However, if the coolant level is normal, it is not a
problem.
1. Stop the engine.
2. Open the engine hood.
3. Remove dipstick (G) and wipe off oil on it with a
cloth.
4. Insert dipstick (G) fully and pull it out.
5. If the oil level is between H mark and L mark on
dipstick (G), it is appropriate.
If the oil level is below L mark, add oil through oil
filler port (F).
PC88MR-10
Related information on troubleshooting
6. If the oil level is above H mark, remove
undercover (1), drain the extra engine oil
through drain plug (P) at the bottom of the
engine oil pan, and check the oil level again.
7. If the oil is at the correct level, tighten the oil filler
cap securely and close the engine hood.
a12. Check of coolant level (in reservoir tank)
There is no need to open the radiator cap at
the usual checks. When checking the coolant
level, check it in reservoir tank when the
engine is cooled down.
Immediately after the engine is stopped, the
coolant is still very hot and the pressure is
accumulated in the radiator.
If the cap is opened under these conditions,
you may be scalded. If you need to remove
the radiator cap, wait until the temperature
drops before you do. Then turn the cap
slowly to release the pressure and remove it
with care.
1. Open the soil cover, check the coolant level is
within FULL - LOW range at reservoir tank (1)
(shown in the figure below). If coolant is
insufficient, add coolant up to FULL level
through water filler port at reservoir tank (1).
2. After refilling with coolant, tighten the cap
securely.
a If the reservoir tank is empty, coolant may be
leaking. If any abnormality is found in the
check for leakage, repair it immediately. If no
abnormality is found, check the level of the
coolant in the radiator. If it is low, add coolant
to the radiator and then to the reservoir tank.
a If inside the reservoir tank (1) is so dirty that it
is difficult to check the coolant level, clean it.
40 Troubleshooting
40-19