Subaru Legacy III (2000-2003 year). Service manual — part 82
LU(H4SO)-2
LUBRICATION
GENERAL DESCRIPTION
1. General Description
A: SPECIFICATIONS
Lubrication method
Forced lubrication
Oil pump
Pump type
Trochoid type
Number of teeth
Inner rotor
9
Outer rotor
10
Outer rotor diameter
×
thickness
78
×
7 mm (3.07
×
0.28 in)
Tip clearance between inner and outer rotor
STANDARD
0.04 — 0.14 mm (0.0016 — 0.0055 in)
LIMIT
0.18 mm (0.0071 in)
Side clearance between inner rotor and pump
case
STANDARD
0.02 — 0.07 mm (0.0008 — 0.0028 in)
LIMIT
0.12 mm (0.0047 in)
Case clearance between outer rotor and pump
case
STANDARD
0.10 — 0.175 mm (0.0039 — 0.0069 in)
LIMIT
0.20 mm (0.0079 in)
Capacity at
80
°
C (176
°
F)
600 rpm
- Discharge pressure
98 kPa (1.0 kg/cm
2
, 14 psi)
- Discharge quantity
3.2
2
(3.4 US qt, 2.8 Imp qt)/min.
5,000 rpm
- Discharge pressure
294 kPa (3.0 kg/cm
2
, 43 psi)
- Discharge quantity
32.6
2
(8.61 US gal, 7.17 Imp gal)/min.
Relief valve operation pressure
490 kPa (5.0 kg/cm
2
, 71 psi)
Oil filter
Type
Full-flow filter type
Filtration area
760 cm
2
(118 sq in)
By-pass valve opening pressure
157 kPa (1.6 kg/cm
2
, 22.7 psi)
Outer diameter
×
width
80
×
75 mm (3.15
×
2.95 in)
Installation screw type
M 20
×
1.5
Oil pressure
switch
Type
Immersed contact point type
Working voltage — wattage
12 V — 3.4 W or less
Warning light activation pressure
14.7 kPa (0.15 kg/cm
2
, 2.1 psi)
Proof pressure
More than 981 kPa (10 kg/cm
2
, 142 psi)
Oil capacity (when replacing oil)
Approx. 4.0
2
(4.2 US qt, 3.5 Imp qt)
LU(H4SO)-3
LUBRICATION
GENERAL DESCRIPTION
B: COMPONENT
(1) Plug
(13) Oil pressure switch
(25) Drain plug
(2) Gasket
(14) Oil filler duct
(26) Metal gasket
(3) Relief valve spring
(15) O-ring
(27) Gasket
(4) Relief valve
(16) Oil filler cap
(5) Oil seal
(17) O-ring
Tightening torque: N·m (kgf-m, ft-lb)
(6) Oil pump case
(18) Baffle plate
T1: 5 (0.5, 3.6)
(7) Inner rotor
(19) O-ring
T2: 6.4 (0.65, 4.7)
(8) Outer rotor
(20) Oil strainer
T3: 10 (1.0, 7.2)
(9) Oil pump cover
(21) Oil level gauge guide
T4: 25 (2.5, 18.1)
(10) Oil filter
(22) O-ring
T5: 44 (4.5, 33)
(11) O-ring
(23) Oil pan
(12) Oil pump ASSY
(24) Oil level gauge
LU-00168
( 1 )
( 2 )
( 3 )
( 4 )
( 5 )
( 6 )
( 7 )
( 8 )
( 9 )
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(19)
(20)
(25)
(23)
(26)
(22)
(21)
(27)
(24)
T5
T5
T3
T1
T2
T2
T4
T2
T1
T1
T2
T1
LU(H4SO)-4
LUBRICATION
GENERAL DESCRIPTION
C: CAUTION
• Wear working clothing, including a cap, protec-
tive goggles, and protective shoes during opera-
tion.
• Remove dirt and corrosion before removal, in-
stallation or disassembly.
• Keep the disassembled parts in order and pro-
tect them from dust or dirt.
• Before removal, installation or disassembly, be
sure to clarify the failure. Avoid unnecessary re-
moval, installation, disassembly, and replacement.
• Be careful not to burn your hands, because each
part in the vehicle is hot after running.
• Be sure to tighten fasteners including bolts and
nuts to the specified torque.
• Place shop jacks or safety stands at the specified
points.
• Before disconnecting electrical connectors of
sensors or units, be sure to disconnect ground ca-
ble from battery.
LU(H4SO)-5
LUBRICATION
GENERAL DESCRIPTION
D: PREPARATION TOOL
ILLUSTRATION
TOOL NUMBER
DESCRIPTION
REMARKS
499977100
CRANKSHAFT
PULLEY
WRENCH
Used for stopping rotation of crankshaft pulley
when loosening and tightening crankshaft pulley
bolt. (2500 cc model)
499977400
CRANKSHAFT
PULLEY
WRENCH
Used for stopping rotation of crankshaft pulley
when loosening and tightening crankshaft pulley
bolt. (2000 cc model)
498547000
OIL FILTER
WRENCH
Used for removing and installing oil filter.
499587100
OIL SEAL
INSTALLER
Used for installing oil pump oil seal.
ST-499977100
ST-499977400
ST-498547000
ST-499587100
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