Overhaul
TOOL REQUIRED^ 926970000 Installer
^ 926980000 Guide
DISASSEMBLE
1. Place pump bracket (with pump installed) in a vise using soft jaws. Do not place pump itself in a vise.
2. Valve removal. Remove oil pump switch, and disconnect connectors and remove valve assy and spring.
3. Rear body removal:
a. Loosen bolts securing rear body so that they can be rotated by hand.
b. Remove pump from pump bracket.
c. Remove pump bracket from vise.
d. Place pump in a vise. Use soft jaws.
e. Remove bolts which have already been loosened in step above.
f. Remove gasket.
4. Removal of cartridge assy, pressure plate and pin Remove cartridge assy, pressure plate and pin from front body as a unit. (Cartridge assy consists of a rotor, ten vanes and a cam.) Be careful not to scratch cartridge assy.
5. Remove two types of O-rings by hand.
6. Disassembly of front body:
a. Pry off retaining ring from inner perimeter groove of front body at pulley location.
b. Using a hand press, press out drive shaft (on the cartridge side).
c. Press ball bearing out of drive shaft using a hand press.
d. Remove oil seal by attaching it to a hooked-end plate placed in a vise.
NOTE: Use a plate without sharp edges. Replace oil seal with new ones.
INSPECTION
Perform following inspection procedures and repair or replace defective parts.
ASSEMBLE
1. Installation of oil seal Apply a coat of lithium grease to outer perimeter of oil seal and charge sealing lips with grease. Using installer and a hand press, press oil seal into front body. Place the seating surface of front body on a soft cloth to prevent it from sustaining scratches while pressing oil seal into place.
2. Installation of drive shaft
a. Using GUIDE and a hand press, drive bearing onto shaft.
b. Install retaining ring on oil seal. Using GUIDE, press shaft and bearing assy into front body. a. Be careful not to strike shaft splices on oil seal's sealing lips during installation. b. Do not hit end of shaft during installation.
c. Lock drive shaft using a retaining ring.
3. Installation of pressure plate: Place front body in a vise with pulley side facing down. Position two O-rings and pressure plate in front body in that order. Do not forget to install O-rings.
4. Installation of cartridge
a. Install cam, rotor and vane in that order.
b. Insert pin into holes in cam and pressure plate.
NOTE: Ensure that vane is installed with "R" side facing the cam. Check that vane moves smoothly. Apply a coat of automatic transmission fluid (DEXRON II) to vane.
5. Installation of rear body
a. While aligning pin hole of rear body with pin on the pump, install rear body using a gasket and tighten bolts by hand.
b. Remove pump from vise.
c. Place pump bracket in a vise, install pump on pump bracket.
d. Tighten rear body mounting bolts in a cries-cross fashion to one-half of specified torque, then tighten to specified torque. After tightening rear body mounting bolts, ensure that shaft rotates properly.
6. Installation of valve
a. Position spring and valve assy in front body in that order.
b. Connect connector to front body with an O-ring in place. Tightening torque: 29-39 Nm (22-29 ft. lbs.).