General Description - Subaru IMPREZA 2004 Service Manual

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
800 cm (124 sq in)
2
160 kPa (1.63 kg/cm , 23.2 psi)
68 × 65 mm (2.68 × 2.56 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)