6
5.3 Disassembly and assembly
WARNING
- Gasoline is a high-volatility material. Do not use gasoline to clean the pump in any case, otherwise it
may cause ignition or explosion.
- When washing parts, do not use such a liquid as corrodes aluminum, copper alloy, iron, etc.
- When disassembling and checking the pump, be sure to stop the supply air and open the outlet valve
to release the internal pressure of the pump beforehand.
- Some types of grease may contain a carcinogenic material. Read the cautions for handling grease
given by the grease maker carefully when handling the grease.
※
When the pump operation becomes defective or stops, do not disassemble
the pump thoughtlessly but judge the condition carefully by referring to the
item pertaining to <Troubleshooting and Corrective Measures>.
※
If the foot valve is clogged with dust or the like, perform disassembling,
washing and inspection according to the following procedure.
※
For disassembling parts other than the foot valve and the air motor, ask
the dealer for disassembly
[Disassembling the foot valve]
1) Bleed the internal pressure of the pump and hose and remove the air
chuck and high-pressure hose form the pump.
2) Unscrew the pan-head screw of the body supporter that fixes the pump.
Pull out the pump from above. (Fig. 9)
3) Fix the main body of the pump on the vise and set a spanner on the valve
adapter. Set a pipe wrench on the tube and unscrew the tube.
4) Pull out the split pin that fixes the plate and unscrew the nut. The plate can
be removed. (Fig.10)
5) Set a spanner on the valve adapter and unscrew it. The valve seat, foot
valve and washer can be taken out from the suction tube.
6) If they are hard to take out, set a pipe wrench on the knurling of the suction
tube and unscrew the suction tube.
7) Pull apart the suction tube a little, and the union connecting between the
air motor and the rod becomes visible. Pull out the pin and unscrew it for
removal. (Fig.11)
8) The air motor is separated from the lower pump. The valve seat, foot valve
and washer can be taken out from the inside of the suction tube. (Fig.12)
9) Wash and check each part. If any blemish or wear is found, replace the
part with a new one. In particular, pay attention to filter clogging in valve
adapter.
10) For assembling, reverse the disassembling procedure. At this time,
perform inspection taking care about the directions of the valve seat
and foot valve.
Fig. 9
Fig.10
Fig.11
Fig.12
