Subaru Legacy IV (2008 year). Manual - part 89

 

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Subaru Legacy IV (2008 year). Manual - part 89

 

 

LU(H4SO)-13

Oil Pump

LUBRICATION

12) Install the oil cooler pipe (A) to the oil pump us-
ing the bolt (B). (Turbo model)

Tightening torque:

6.4 N·m (0.7 kgf-m, 4.7 ft-lb)

13) Install the under cover.
14) Lower the vehicle.
15) Connect the ground cable to battery.

16) Install the collector cover. (Turbo model)

C: DISASSEMBLY

Remove the screw which secures oil pump cover
and then disassemble oil pump. Inscribe alignment
marks on the inner and outer rotors so that they can
be replaced in their original positions during reas-
sembly.

NOTE:
Before disassembling the oil pump, remove the re-
lief valve.

LU-02396

(B)

(C)

(C)

(A)

IN-00203

(A) Front oil seal

(B) Oil pump case

(C) Inner rotor

(D) Outer rotor

(E) Oil pump cover

(F) Relief valve

(G) Relief valve spring

(H) Plug

(I) Gasket

LU-00020

(E)

(D)

(C)

(B)

(A)

(F)

(G)

(I)

(H)

LU(H4SO)-14

Oil Pump

LUBRICATION

D: ASSEMBLY

1) Using the ST, install the front oil seal.
ST

499587100

OIL SEAL INSTALLER

NOTE:
Use a new front oil seal.

2) Apply a coat of engine oil to inner and outer ro-
tors.
3) Assemble the inner and outer rotors in their orig-
inal positions.
4) Assemble the oil relief valve and install relief
valve spring and plug.

NOTE:
Use a new gasket.

5) Install the oil pump cover.

Tightening torque:

T1: 5.4 N·m (0.6 kgf-m, 4.0 ft-lb)
T2: 44 N·m (4.5 kgf-m, 32.5 ft-lb)

LU-00021

ST

(A) Front oil seal

(B) Oil pump case

(C) Inner rotor

(D) Outer rotor

(E) Oil pump cover

(F) Relief valve

(G) Relief valve spring

(H) Plug

(I) Gasket

LU-02134

T1

T2

(G)

(F)

(I)

(H)

(A)

(B)

(C)

(D)

(E)

LU(H4SO)-15

Oil Pump

LUBRICATION

E: INSPECTION

1. TIP CLEARANCE

Measure the tip clearance of rotors. If the clearance
is out of specification, replace the rotors as a set.

Tip clearance:

Standard

0.04 — 0.14 mm (0.0016 — 0.0055 in)

2. CASE CLEARANCE

Measure the clearance between the outer rotor and
the oil pump case. If clearance is out of standard,
replace the oil pump case.

Case clearance:

Standard

0.10 — 0.175 mm (0.0039 — 0.0069 in)

3. SIDE CLEARANCE

Measure the gap between the inner rotor and the
oil pump case to measure the clearance between
the oil pump inner rotor and the oil pump cover as
shown in the figure. If the clearance is out of spec-
ification, replace the rotors or the oil pump case.

Side clearance:

Standard

0.02 — 0.07 mm (0.0008 — 0.0028 in)

4. OIL RELIEF VALVE

Check the valve for assembly condition and dam-
age, and the relief valve spring for damage and de-
terioration. Replace the parts if defective.

Relief valve spring:

Free length

73.7 mm (2.902 in)

Installed length

54.7 mm (2.154 in)

Load when installed

93.1 N (9.49 kgf, 20.88 lbf)

5. OIL PUMP CASE

Check for worn shaft hole, clogged oil passage,
worn rotor chamber, cracks and other faults.

6. FRONT OIL SEAL

Check the front oil seal lips for deformation, hard-
ening, wear, etc. and replace if defective.

LU-00023

LU-00024

LU-00025

LU(H4SO)-16

Oil Pan and Strainer

LUBRICATION

5. Oil Pan and Strainer

A: REMOVAL

1) Set the vehicle on a lift.
2) Remove the collector cover. (Turbo model)
3) Disconnect the ground cable from battery.

4) Remove the air intake duct. <Ref. to IN(H4SO)-
8, REMOVAL, Air Intake Duct.> <Ref. to
IN(H4DOTC)-9, REMOVAL, Air Intake Duct.>
5) Disconnect the connector from the mass air flow
and intake air temperature sensor. (Non-turbo
model)
6) Remove the air intake chamber. (Non-turbo
model) <Ref. to IN(H4SO)-7, REMOVAL, Air Intake
Chamber.>
7) Remove the air intake boot. (Turbo model)

8) Remove the intercooler. (Turbo model) <Ref. to
IN(H4DOTC)-12, REMOVAL, Intercooler.>
9) Remove the pitching stopper.

10) Remove the hood stay holder (A) and radiator
upper brackets (B).

11) Support the engine with a lifting device and
wire ropes.

12) Lift up the vehicle.

CAUTION:
When lifting up the vehicle, raise up wire ropes
at the same time.
13) Remove the under cover.
14) Drain the engine oil. <Ref. to LU(H4SO)-10,
REPLACEMENT, Engine Oil.>
15) Remove the front exhaust pipe. <Ref. to
EX(H4SO)-4, REMOVAL, Front Exhaust Pipe.>
<Ref. to EX(H4DOTC)-5, REMOVAL, Front Ex-
haust Pipe.>
16) Remove the nuts which install the engine
mounting onto the front crossmember.

17) Remove the bolts which install oil pan on cylin-
der block with the engine raised up.

IN-00203

LU-02397

AT-03877

LU-00232

(A)

(B)

(B)

LU-00222

ME-02650

 

 

 

 

 

 

 

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