Usage:
VIEW A-A OF ROTOR OIL PUMP
VIEW A-A OF FRONT HOUSING
NOTE: Tighten relief valve guide to ... 30 ± 5 lb.ft.(40 ± 7 N·m)
(1) Front housing assembly.
(2) Oil pump cover assembly.
(3) 9L9243 Spring (pump pressure relief valve)
Length under test force ... 2.579 in.(65.51 mm)
Test force ... 37.3 ± 1.9 lb.(166.5 ± 8.5 N)
Free length after test ... 3.50 in.(88.9 mm)
Outside diameter ... .875 in.(22.23 mm)
(3) 1W1788 Spring (pump pressure relief valve)
Length under test force ... 2.360 in. 59.94 mm)
Test force ... 71 ± 3 lb.(314 ± 14 N)
Free length after test ... 3.080 in.(78.23 mm)
Outside diameter ... .875 in.(22.23 mm)
(3) 1W2208 Spring (pump pressure relief valve)
Length under test force ... 2.360 in.(59.94 mm)
Test force ... 65 ± 3.1 lb.(290 ± 14N)
Free length after test ... 3.380 in.(85.85 mm)
Outside diameter ... .875 in.(22.23 mm)
(4) Width of new oil pump rotors (earlier pump) ... 1.2480 ± .0003 in.(31.699 ± 0.008 mm)
Depth of counterbore in front housing ... 1.252 ± .001 in.(31.80 ± 0.03 mm)
(4) Width of new oil pump rotors (later pump) (new) ... 1.4360 ± .0003 in.(36.474 ± 0.008 mm)
Depth of counterbore in front housing (new) ... 1.4400 ± .0010 in.(36.576 ± 0.025 mm)
(5) Maximum permissible end clearance of oil pump rotors when measured with oil pump installed to front cover ... .006 in.(0.15 mm)
(6) Clearance of oil pump rotor tip ... .002 to .008 in.(0.05 to 0.20 mm)
Maximum permissible clearance of oil pump rotor tip ... .011 in.(0.28 mm)
(7) Bearing junction.
(8) Diameter of bearing for rotor (new) ... 2.8041 ± .0022 in.(71.224 ± 0.056 mm)
(9) Position of bearing junction (7) from vertical centerline ... 75 ± 30°