Section 03
ENGINE
Subsection 08
(LUBRICATION SYSTEM)
03-08-6
VMR2004_131_03_08A.FM
ENGINE OIL PRESSURE
REGULATOR
The oil pressure regulator is located on the engine
MAG side (behind magneto housing cover).
1. Oil pressure regulator plug
NOTE:
The oil pressure regulator system works
when the oil pressure exceeds 500 kPa (73 PSI).
Removal
Remove:
– vehicle from vehicle
(refer to REMOVAL and INSTALLATION)
– water pump housing
(refer to COOLING SYSTEM)
– magneto housing cover
(refer to MAGNETO SYSTEM)
– oil pressure regulator plug
no. 20
, compression
spring
no. 19
and valve piston
no. 18
.
1. Valve piston
2. Compression spring
3. Oil pressure regulator plug
Inspection
Inspect valve piston for scoring or other damages.
Check compression spring for free length.
Replace both parts if important wear or damage
are present.
Clean bore and threads in the oil pump housing
from metal shavings and other contaminations.
Installation
For installation, reverse the removal procedure.
OIL PUMP
The oil pump is located on the engine MAG side
(refer to ENGINE OIL PRESSURE REGULATOR).
Removal
Remove:
– engine from vehicle
(refer to REMOVAL AND INSTALLATION)
– water pump housing
(refer to COOLING SYSTEM)
– magneto housing cover
(refer to MAGNETO SYSTEM)
NOTE:
The following steps to remove the gears
no. 13
and
no. 16
are not necessary to replace
only the oil pump.
– retaining ring
no. 14
then drive gear
no. 13
CAUTION:
Never use the retaining ring a second
time. Always replace by a new one.
NOTE:
Drive gear is snapped on a needle pin. This
needle pin passes through the balancing shaft.
– needle pin
no. 12
– pin
no. 15
– intermediate gear
no. 16
WARNING
Oil pressure regulator plug on oil pump housing
is spring loaded.
1
R400motr130A
3
R400motr117A
2
1
COMPRESSION SPRING FREE LENGTH
NEW NOMINAL
64 mm (2.519 in)
SERVICE LIMIT
62 mm (2.441 in)
Содержание M-50 x 4
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