Moxy MT 31 - Page 176

SHOP MANUAL MT26-31 - 06.2005
Engine
Tier-3 710655-
Ch 1 page 152
Gauge shows low pres-
sure
Loosened guide plates
in the oil cooler prevent
passage of the oil
Worn/damaged oil
pump
Clogged oil cooler
Loose screws in timing
gear’s intermediate
gear
Gauge indicates low
pressure at maximum
speed but not at idling
speed
The main oil duct (to
piston cooling nozzles)
plug in the rear of the
engine has come loose
Oil pressure at idling/
low engine speed is
not affected since the
delivery valve closes at
3 bar
Effect Cause Troubleshooting Action