6
7. Maintenance and Inspection
7-1. Inspection of malfunctions and troubleshooting
Symptom Cause
Contents of inspection and
corrective measure
Oil does not come out by
operating the handle.
Check whether the check valve is
closed.
- Check whether oil is used up.
Check the check valve.
Check and replenish.
Oil comes out but the pressure
or flow rate is insufficient.
- The valve is clogged with dust.
-The plunger packing is
worn away.
Check and clean the valve.
Check and replace.
Oil comes out from the top of
the gland.
- The gland packing is
worn away.
Tighten and replace with a
new one.
7-2.
Maintenance and Inspection
* The hose is a consumable part. Check it periodically. If any flaw or leak is found, replace it a
little early.
7-3. Disassembly and Assembly
[Disassembling and inspecting the suction section]
1) Unscrew the oil resisting hose to remove it.
2) Loosen the pan-head screws that fix the pump unit on the oil tank and take out the pump
assembly from the oil tank. At this time, the ball spring provided between the pump unit and
hose hanger will jump out. Take care not to lose it.
3) Fix the main unit on the vice.
4) Loosen the 2 bolts/nuts of the tube adapter that fix the flange.
5) When the suction tube is loosened with a pipe wrench set on this tube, it can be separated
from the main unit.
6) Fix the suction tube on the vice and unscrew it with the pipe wrench set on the valve adapter.
Then, the valve can be taken out.
WARNING
Gasoline is a high-volatility fuel. Do not use it to clean the pump in any case. Otherwise,
ignition or explosion may be caused.