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Home >> Chevrolet >> 1988 >> Astro Van M L4-151 2.5L >> Repair and Diagnosis >> Transmission and Drivetrain >> Automatic Transmission/Transaxle >> Service and Repair >> Overhaul >> 700-R4 Automatic Transmission >> Case & Internal Components >> Pump Body Assembly

Pump Body Assembly

Fig. 83, Oil pump assembly:





Fig. 85, Pump body assembly:





1. Install O-ring seal and oil seal ring into groove on back side of slide, Figs. 83 and 85 Apply suitable locking compound to the pump body oil seal to help aid in retaining seal in body.
2. Install pivot pin spring and pivot pin into the pump body.
3. Install slide while aligning notch in slide with pivot pin, then the slide seal and support. Oil seal ring should face downward into the pump pocket.
4. Install pump vanes and vane guide ring, and rotor assembly.

Fig. 86, Installing pump seal:





5. Install pump slide spring. If removed, install the oil seal assembly using pump oil seal installer tool No. J-25016, Fig. 86.