Ranger 4WD L4-140 2.3L SOHC (1984)
If any part of pump requires replacement, the entire pump assembly must be replaced.
1.
Inspect inside of pump housing, outer race and rotor for excessive wear or scoring.
2.
Inspect mating surface of pump cover for excessive wear, or scoring. Either of these conditions will necessitate replacement of pump.
3.
Measure inner rotor tip clearance, Fig. 20.
4.
Measure rotor endplay, Fig. 21. Maximum endplay should be .004 inch on 1983---84 models and .005 inch on 1985---87 models.
5.
Check driveshaft to housing bearing clearance. This measurement should be .0015---.0030 inch.
6.
Check relief valve spring tension. Spring tension should be 15.2---17.2 lbs. @ 1.20 inches on 1983---86 models, or 12.6---14.5 lbs. on 1987
models.
7.
Inspect relief valve piston for scores and free operation in bore.
