ENGINE MECHANICAL SERVICE MANUAL NUMBER 22
Page 3A-82 90-860074--1 FEBRUARY 2002
Inspection
1. Using appropriate gauging devices, measure the following:
a. Clearance between rotors. Maximum: 0.152 mm (.006 in.).
b. Clearance between housing and outer rotor: 0.105 - 0.106 mm (.00413 - .00417 in.).
Maximum: 0.500 mm (.01968 in.).
c. Diameter of rotor housing: 58.105 - 58.130 mm (2.287 - 2.288 in.).
70282
a
b
c
d
e
a-Rotor
b-Outer Rotor
c-Clearance Between Rotors
d-Clearance Between Housing and Outer Rotor
e-Diameter of Rotor Housing
d. Depth of rotor housing: 32.403 - 32.406 mm (1.2757 - 1.2758 in.).
e. Axial clearance between pump driven gear and pump body: 0.050 - 0.070 mm (.002
- .003 in.).
2. If measurements are not within specifications the pump is faulty, and must be replaced
as a complete unit.
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