Oil Filter
- Construction and Function
This engine employs a cartridge type filter.
Pressurized oil from the oil pump enters from
(A);
and is filtered by a fuli flow filter, before
discharge
through (B).
When the full flow filter is clogged, the safety
valve opens to bypass the oil.
-
Maintenance
A. The oil filter must be replaced every 100 hours
of
operation.
When installing a new filter, coat its mounting
face
with clean oil then hand tighten only.
Water Pump Assembly and Thermostat
housing
-
Disassembly
A. Remove the set plate and gasket.
B. Take out the thermostat and spring from the
thermostat housing (on the 103-06) and from
the
water pump body on the 103-09/10 and
Perama
M25/M30.
1
103-06
PB064
3
103-06
PB065
-
Inspection
Thermostat
A. Replace the thermostat if the valve opens at ambient
temperature.
B. Place the thermostat into water. Raise the water
temperature gradually and inspect the valve
opening temperature and valve lift. (Standard
values are as described in the "Specifications".)
NOTE: 3 to 5 minutes will be required before
the
valve starts operating.
Type
Wax pellet
type
Wax pellet
type
Temperature when
starting to open
69 to 73
°
C
75
°
C
Temperature when
fully open
82
°
C
90
°
C
Valve lift (when the
water temperature
is 82
°
C
8.0mm
6mm
PB066
Water Pump
A. Check for cracks, wear, leaks, bearing rough
ness or
damage. If defective replace assembly.
-
Reassembly
A. Assemble the thermostat and spring in the water pump
casing or housing, as appropriate. Install
the gasket
and set plate.
B. Rotate the fan holder to confirm that there is no
fouling.
103-09/10/Perama M25/M30
103 06
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