Yanmar YM155d - Gears; Oil Seals. O-Rings and Ball Bearings

(2) Lube Oil Pressure
Oil pressure control valve:
21.34--35.56 psi (1.5-2.5 kg/cm2)
Oil filter by-pass pressurevalve activating pressure:
17.07-1 1.38 psi
(120.2 kg/crn2 )
Lube oil pressure control valve is fitted on lube
oil filter.
14. COOLING SYSTEM
(1) Radiator
The radiator
is pressurized at 12.8 psi (0.9 kg/
cm2 ). Apply pressure to the cooling system to
test whether there are any leaks in the
svstem.
15. GEARS
(1) Measuring Backlash
Fit each of the gears in position, and measure
their respective backlash readings.
(2) Visual Inspection
Unir: in. (mml
Check the gear tooth faces for pitting and if any
gear shows severe pitting replace
it.
Item \
Backlash
(3) Tachometer Gear Unit (only model 2TR13A
engine)
Check to make sure that the gear unit functions
smoothly.
16. OIL SEALS, O-RINGS AND BALL BEAR-
INGS
Standarddimension RePImment limit
o Crankshaft - fined on both ends
Flywheel side
- main bearing housing
Gear side
- gear case
Testing equipment
Dial gauge
Fuse
Mircomerer
0.0031-0.0063
(0.08-0.161
o Decompression shaft
o Regulator handle shaft
IlluRration
a
0.01 18 (0.31
(3) Bal! Bearings
o Camshaft
o Hydraulic pumpdriven gear shaft
(1) Oil Seals