MMD Equipment 400S-6B1 - Manual (Page 59)

6. Maintenance/Adjustment
6-3
6.2 Troubleshooting
Should any trouble occur during operation, do not leave it. Investigate the cause and take
appropriate measures.
Read the manual carefully and fully understand what to do in case of trouble.
The better you understand the construction and function of the unit, the faster you can find a
problem and solution.
This chapter describes the state, cause and countermeasures of important troubles in detail :
When “DIAGNOSTIC LAMP” turn on, push “DIAGNOSTIC BUTTON” and check “FAULT
CODE”. Please refer to a service factory / the nearest dealer for the details.
Symptom Cause Counter measures
Starter does not
rotate. Low starter
revolution speed
even when
starting. (1)Battery malfunction Check Battery→Charge/Change
Starter rotates but
engine does not
start up. (1)Fuel filter clogging
(2)Fuel pre-filter clogging
(3)No diesel fuel oil
(4)Air mixing in fuel pipings Disassemble, clean, and change
Disassemble, clean, and change
Replenish fuel
Bleed air
Engine oil
pressure drop
monitor lamp
glows. (1)Engine oil shortage
(2)Engine oil filter clogging
(3)Oil pressure switch malfunction
(4)Loosened or disconnected wiring, or
connector
Replenish fuel
Change
Change
Check/repair
Coolant
temperature rise
monitor lamp
glows. (1)Radiator clogging
(2)Faulty thermostat
(3)Faulty coolant temperature switch
(4)Shortage of coolant
(5)Slip of fan belt
(6)Looseness, disconnection of wiring or
connectors
Clean
Change
Change
Replenish
Adjust tension
Check/repair
The monitor lamp
for air filter
clogging flickers. (1)Air filter clogging Clean