Nissan 100NX N14 silhouetteN14

Oil Pump (Cont'd)

LC-45prose procedure

REGULATOR VALVE INSPECTION

  1. 1
    Visually inspect components for wear and damage.
    Cross-section of the regulator valve assembly inside the pump cover bore, showing the spring, washer, regulator valve and cap.
    SLC295
  2. 2
    Check oil pressure regulator valve sliding surface and valve spring.
  3. 3
    Coat regulator valve with engine oil and check that it falls smoothly into the valve hole by its own weight.

OIL PRESSURE RELIEF VALVE INSPECTION

Inspect oil pressure relief valve for movement, cracks and breaks by pushing the ball. If replacement is necessary, remove valve by prying it out with a screwdriver. Install a new valve in place by tapping it.

OIL PUMP INSPECTION

Using a feeler gauge, check the following clearance.

Oil pump clearances (Unit: mm (in))

Rotor tip clearance (1)
ValueLess than 0.12 (0.0047)
Outer rotor to body clearance (2)
Value0.15 - 0.21 (0.0059 - 0.0083)
Side clearance (with gasket) (3)
Value0.05 - 0.12 (0.0020 - 0.0047)

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