Injection pump joint loosened.
Piston ring installed upside down.
Piston, cylinder and ring worn.
Nozzle hole clogged.
Piston ring stuck.
Valve open/close timing improper.
Injection timing improper.
Misfires accompanying
white smoke exhaust
(unloaded):
Overloading.
Air cleaner element clogged.
Defective fuel due to foreign matter entering.
Leakage from fuel passage.
Fuel consumption
high (Dark smoke
exhaust.):
Air cleaner element broken or its cleaning neglected.
Oil replacement neglected.
Improper oil used.
Sliding parts worn
extremely or piston
stuck:
Engine stopped suddenly
with abnormal noise:
Piston and rod seizure and damage.
Lubrication oil diluted and
increases in volume:
Injection pump plunger barrel worn.
Excessive oil
Engine does not stop
with fuel supply
discontinued (or over
runs):
Governor improperly assembled.
Injection pump rack disengaged.
3. MACHINE ON THE WHOLE
Aeration in traveling hydraulic oil.
Internal defect in vibrator.
Excessive oil in vibrator.
Clutch slips.
V-belt slips.
speed range
Engine power output I
nsufficient or rpm setting improper for
Travel speed slow
and vibration weak:
Connecting groove between gear pump input shaft and adapter
broken or worn.
Selector valve clogged with dust.
Piston bearing broken in cylinder, leakage in USH packing, etc.
Improper oil level in hydraulic system (excessive or insufficient).
Oil hose broken.
Aeration in oil of hydraulic system for traveling.
Forward/reverse selector component defective.
Travel lever installation deficient.
Travels forward or
reverse but direction
not selectable:
Piston bearing broken in cylinder, leakage in USH packing, etc.
Connecting groove between gear pump input shaft and adapter
broken or worn.
Clutch slipping.
Vibrator locked.
V-belt disengaged or slipping.
Does not travel forward
nor reverse:
Resistance of travel lever
great.
Excessive oil in hydraulic system.
Engine rpm does not rise
efficiently:
Isolation rubber damaged or failed.
28
Summary of Contents for Mikasa MVH120
Page 13: ...10 ...
