MMD Equipment 400S-6B1 - Manual (Page 46)

6. Maintenance/Adjustment
6-4
Symptom Cause Countermeasures
Engine oil pressure
lamp goes on.
(1) Engine oil shortage.
(2) Engine oil filter clogging.
(3) Malfunction of engine oil pump
(4) Faulty oil pressure switch.
(5) Loosened or disconnected
wiring or connector.
Replenish oil
Change
Change
Change
Check/Fasten
Coolant temp. lamp goes on.
(1) Radiator clogging.
(2) Faulty thermostat.
(3) Faulty coolant temp. switch.
(4) Low coolant level.
(5) Fan belt slippage.
(6) Loose wiring, connectors and
desconnection
Clean
Change
Change
Replenish
Re-adjust tension
Check/retighten
Discharge air temp.
lamp goes on.
(1) Oil cooler clogging.
(2) Oil filter clogging.
(3) Faulty discharged air temp.
switch.
(4) Loose wiring connectors and
disconnection.
(5) Slippage of fan belt.
(6) Shortage of compressor oil.
(7) Malfunction of by-pass valve.
Clean
Change
Check/inspect
Check and retighten
Re-adjust tension
Replenish oil
Check/change
Engine speed down
lamp goes on.
(1) Speed regulator insufficient
adjustment.
(2) Trouble of controller.
Re-adjust
Change
Fuel residual level lamp
goes on.
(1) Fuel runs short.
(2) Malfunction of fuel oil level
drop sending unit
(3) Loose wiring connectors and
disconnection
Refueling
Check/change
Check and retighten
Contact your nearest dealer if you find it difficult to repair by yourselves.
Refer to the engine operation manual for trouble concerning the engine.