Subaru Impreza 2003 Service Manual page 352

LUBRICATION
1. General Description
A: SPECIFICATIONS
Lubrication method
Pump type
Number of teeth
Outer rotor diameter × thickness
Tip clearance between inner and outer rotor
Side clearance between inner rotor and pump
case
Case clearance between outer rotor and pump
Oil pump
case
Capacity at
80°C (176°F)
Relief valve operation pressure
Type
Filtration area
Oil filter
By-pass valve opening pressure
Outer diameter × width
Oil filter to engine thread size
Type
Working voltage — wattage
Oil pressure
switch
Warning light activation pressure
Proof pressure
Oil capacity (at replacement)
GENERAL DESCRIPTION
Inner rotor
Outer rotor
STANDARD
LIMIT
STANDARD
LIMIT
STANDARD
LIMIT
- Discharge
pressure
600 rpm
- Discharge
quantity
- Discharge
pressure
5,000 rpm
- Discharge
quantity
LU(H4SO)-2
Forced lubrication
Trochoid type
9
10
78 × 7 mm (3.07 × 0.28 in)
0.04 — 0.14 mm (0.0016 — 0.0055 in)
0.18 mm (0.0071 in)
0.02 — 0.07 mm (0.0008 — 0.0028 in)
0.12 mm (0.0047 in)
0.10 — 0.175 mm (0.0039 — 0.0069 in)
0.20 mm (0.0079 in)
2
98 kPa (1.0 kg/cm , 14 psi)
3.2 2 (3.4 US qt, 2.8 Imp qt)/min.
2
294 kPa (3.0 kg/cm , 43 psi)
32.6 2 (34.4 US qt, 28.7 Imp qt)/min.
2
490 kPa (5.0 kg/cm , 71 psi)
Full-flow filter type
2
1,000 cm (155 sq in)
2
160 kPa (1.63 kg/cm , 23.2 psi)
80 × 70 mm (3.15 × 2.76 in)
M 20 × 1.5
Immersed contact point type
12 V — 3.4 W or less
2
14.7 kPa (0.15 kg/cm , 2.1 psi)
More than 981 kPa (10 kg/cm
4.0 2 (4.2 US qt, 3.5 Imp qt)
2
, 142 psi)