Troubleshooting

Maintenance & Repair service

Please contact us for your equipment repair, maintenance, sales and service needs.

*Provided the machine is used normally and in accordance with the instruction manual and the caution label affixed to the main unit.

Contact us

Head Office, Tokyo Head Office, Tokyo
2-4-9 Haginaka, Ohta-ku, Tokyo, 144-0047, Japan
TEL: +81-3-3744-1800  FAX: +81-3-3745-2671
Kansai Branch Kansai Branch
1-3 Tsuto Sumiecho, Nishinomiya City, Hyogo-ken, 633-8234, Japan
TEL: +81-798-36-5480  FAX: +81-798-36-4917
Komatsu Oil Filters Malaysia Sdn. Bhd.
Komatsu Oil Filters Malaysia Sdn. Bhd.
Komatsu Oil Filters Malaysia Sdn. Bhd.
NO.3 Jalan Mutiara Emas 5/2,
Taman Mount Austin, 81100 Johor Bahru, Malaysia
TEL +60-7-364-5530  FAX +60-7-364-5520
 

Troubleshooting

Anomaly Main cause Countermeasure
Motor doesn't work even when the switch is turned on Power cord is not plugged in Plug in the power cord
Power cord is damaged Replace the power cord
Power cord is disconnected from the switch Reattach the power cord to the switch
Switch is damaged Replace the switch
Explanatory drawing
Anomaly Main cause Countermeasure
Switch is turned on, but the machine cuts out/turns off

*If you try to force the switch to turn on and attempt to turn the motor, the motor may emit smoke and break down
Check if the hose is clogged
Remove the hose and blow into it or run water through it
If the hose is clogged, replace the hose
Expansion inside the pump Wait a couple of minutes and then turn on the switch
Check that sediment is not inside the hose
(pump lockup). If there is, the chain or timing belt cannot be turned by hand
If the pump is locked, release the pump lock with the pump release stick or a pipe wrench
If you cannot unlock it using a pipe wrench, please overhaul or replace the pump
Explanatory drawing
Switch is damaged Replace the switch
Check if the electronic parts have come into contact with water and caused a short circuit If there has been a short circuit, please dry out the electronic parts. If the problem isn’t solved after drying, please change the electronic parts
Check if the power cable’s coating has peeled off to cause a short circuit Replace the power cord
Anomaly Main cause Countermeasure
Pump sound is too loud Filter(Filcopad) is clogged Replace the filter (Filcopad)
Pump bearing is damaged Replace the pump bearing
Caster won’t move Caster is damaged Replace the caster
Explanatory drawing
Oil is leaking
●Leaking from pump
Pump oil seal is damaged Replace the pump oil seal
Explanatory drawing
●Leaking from hose Hose is damaged Replace the hose
●Leaking from coupler Coupler is damaged Replace the Coupler
O-ring inside of coupler is damaged Replace the O-ring
Explanatory drawing
●Leaking from flexible tube Flexible tube is damaged Replace the flexible tube
Anomaly Main cause Countermeasure
Does not filter even though the motor is running


*In some cases smoke may be seen coming out from the end of the hose, but this is due to heat cause by friction within the pump
Filter (Filcopad) is clogged Replace the filter (Filcopad)
Oil is not hot enough Heat up the oil to at least 120℃
Filter has been set incorrectly Set the filter properly
Explanatory drawing
Flexible tube is cracked and air is being sucked in Replace the flexible tube
Pump oil seal is damaged Replace the pump oil seal
Scum or impurities are clogging the pipe between the pump and the flexible tube Remove the impurities
Explanatory drawing
Check that the chain or timing belt are connected correctly If has come off, put it back on correctly. If it has stretched, replace with a new part
Explanatory drawing