Table of Contents
Oil Pump Disassembly and Reassembly
CAUTION
!
Don't remove sprocket and inner rotor from
oil pump, otherwise damage of oil pump
center shaft and abnormal operation of oil
pump could result.
Disassembly
• Disassemble oil pump referring to "Oil Pump
Components".
Reassembly
1) Wash, clean and then dry all disassembled parts.
2) Apply thin coat of engine oil to inner and outer rotors,
and inside surfaces of oil pump case.
3) Install outer rotor to pump case No.1.
4) Install relief valve (3), relief spring (2) and retainer (1)
to oil pump case No.2 (4).
Tighten retainer to specified torque.
Tightening torque
Oil pump relief valve retainer (a): 28 N·m (2.8
kgf-m, 20.5 lb-ft)
5) Install oil pump case pins (5) to oil pump case No.2.
6) Assemble oil pump. After assembling oil pump,
check to be sure that rotor turns smoothly by hand.
Tightening torque
Oil pump case bolt (a): 12 N·m (1.2 kgf-m, 9.0 lb-
ft)
Oil Pump Inspection
S6RW0C1506006
Visual Inspection
• Check outer rotor (3), inner rotor and oil pump cases
(1), (2) for excessive wear or damage.
If abnormal condition is found in above checks,
replace oil pump assembly.
• Check relief valve (4) for excessive wear or damage.
If abnormal condition is found in above checks,
replace oil pump relief valve set.
5. Relief spring
Relief Valve Spring Free Length and Load
• Measure free length and tension of oil relief spring.
If the measured values of length or tension is less
than the specification, replace oil pump relief valve
set.
Oil relief spring
Item
Spring free
length
Spring
preload
I2RH01150020-01
I2RH01150021-01
Engine Lubrication System:
6. Retainer
Standard
63.5 mm (2.5 in.)
85.0 N for 52.0 mm (8.5 kgf for 52.0
mm, 19.0 lb/2.05 in.)
1E-10
S6RW0C1506007
I2RH01150022-01
I2RH01150023-01
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Troubleshooting
