GSIC - Global Service Information Center

# VANE PUMP (for 1GR-FE) > INSPECTION

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1. INSPECT OIL CLEARANCE

1. Using a micrometer and caliper gauge, measure the oil seal clearance.

   Standard clearance:
     0.021 to 0.043 mm (0.0008 to 0.0017 in.)

   Maximum clearance:
     0.07 mm (0.0028 in.)
   If it is greater than the maximum, replace the vane pump assembly.

2. INSPECT VANE PUMP ROTOR AND VANE PUMP PLATE

1. Using a micrometer, measure the height, thickness and length of the vane plates.

   Minimum:

     Item | Length
     Height | 7.6 mm (0.299 in.)
     Thickness | 1.405 mm (0.0553 in.)
     Length | 11.993 mm (0.4722 in.)

1. Using a feeler gauge, measure the clearance between a side face of the vane pump rotor groove and vane plate.

   Maximum clearance:
     0.025 mm (0.0012 in.)
   If the result is less than the minimum, replace the vane pump assembly.
   If the clearance is greater than the maximum, replace the plate and/or rotor with one that has the same mark as the cam ring.

   Inscribed mark:
     1, 2, 3, 4 or None

   HINT:
     There are 5 vane plate lengths with the following rotor and cam ring marks:

   Standard length:

     Rotor and Cam Ring Mark | Vane Plate Part No. | Vane Plate Length
     None | 44345-06110 | 12.001 to 12.003 mm (0.47248 to 0.47256 in.)
     1 | 44345-06120 | 11.999 to 12.000 mm (0.47240 to 0.47244 in.)
     2 | 44345-06130 | 11.997 to 11.998 mm (0.47232 to 0.47236 in.)
     3 | 44345-06140 | 11.995 to 11.996 mm (0.47224 to 0.47228 in.)
     4 | 44345-06150 | 11.993 to 11.994 mm (0.47216 to 0.47220 in.)

3. INSPECT FLOW CONTROL VALVE

1. Coat the flow control valve with power steering fluid and check that it falls smoothly into the flow control valve hole by its own weight.

1. Check the flow control valve for leakage. Close one of the holes and apply compressed air of 392 to 490 kPa (4 to 5 kgf/cm2, 57 to 71 psi) to the hole on the opposite side. Confirm that the air does not flow out of the end holes.
   If necessary, replace the vane pump assembly.

4. INSPECT COMPRESSION SPRING

1. Using a vernier caliper, measure the free length of the spring.

   Minimum free length:
     29.2 mm (1.453 in.)
   If the length is less than the minimum, replace the vane pump assembly.

5. INSPECT PRESSURE PORT UNION SUB-ASSEMBLY