Section 01 ENGINES (1503 4-TEC)
Subsection 04 (LUBRICATION SYSTEM)
R1503motr372A
1
TYPICAL — SUPERCHARGED ENGINES
1. Oil pressure regulator
NOTE: The oil pressure regulator system opens
when the oil pressure exceeds 400 kPa (58 PSI).
Removal
Remove:
– engine oil (refer to OIL CHANGE in the appro-
priate VEHICLE SHOP MANUAL)
– oil pressure regulator plug no. 15, compression
spring no. 16, valve piston no. 17 and valve
piston guide no. 18.
WARNING
Oil pressure regulator plug on oil pump hous-
ing is spring loaded.
smr2005-035-002_a
TYPICAL — NATURALLY ASPIRATED ENGINE
1. Valvepistonguide
2. Valve piston
3. Compression spring
4. Oil pressure regulator plug
5. O-Ring
smr2005-035-003_a
TYPICAL — SUPERCHARGED ENGINES
1. Valvepistonguide
2. Valve piston
3. Compression spring
4. Compression spring
5. Oil pressure regulator plug
6. O-Ring
Inspection
Inspect valve piston and valve piston guide for
scoring or other damages.
Check compression spring for free length.
50 SMR2005-035
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