FixVault

Lubrication (H4SO): General Description: Specifications

GENERAL SPECIFICATIONS

Lubrication method Forced lubrication
Oil pump Pump type Trochoid type
Number of teeth Inner rotor 9
Outer rotor 10
Outer rotor diameter x thickness 78 x 7 mm (3.07 x 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/cm2 , 14 psi)
  • Discharge quantity
3.2 (3.4 US qt, 2.8 Imp qt)/min.
5,000 rpm
  • Discharge pressure
294 kPa (3.0 kg/cm2 , 43 psi)
  • Discharge quantity
32.6 (34.5 US qt, 28.7 Imp qt)/min.
Relief valve operation pressure 490 kPa (5.0 kg/cm2 , 71 psi)
Oil filter Type Full-flow filter paper type
Filtration area 910 cm2 (141 sq in)
By-pass valve opening pressure 157 kPa (1.6 kg/cm2 , 23 psi)
Outer diameter x width 80 x 75 mm (3.15 x 2.95 in)
Installation screw type M 20 x 1.5
Oil pressure switch Type Type of contact point in oil
Working voltage - wattage 12 V - 3.4 W or less
Warning light activation pressure 14.7 kPa (0.15 kg/cm2 , 2.1 psi)
Proof pressure More than 981 kPa (10 kg/cm2 , 142 psi)
Oil capacity (when replacing oil) Approx. 4.0 (4.2 US qt, 3.5 Imp qt)

Recommended oil: 

API classification SM with the words "Energy Conserving" ILSAC GF-4 (Star burst mark) which is indicated on the container. 

NOTE: If vehicle is used in desert areas with very high temperatures or for other heavy duty applications, the following viscosity oils may be used: ILSAC classification: GF-4 or API classification: SM or SL SAE Viscosity No.: 30, 40, 10W-50, 20W-40, 20W-50.
Fig 1: Identifying SAE Viscosity
G04988549Courtesy of SUBARU OF AMERICA, INC.