Oil Pump

OIL PUMP DISASSEMBLE
REMOVAL PROCEDURE





1. Remove the thrust (pump to drum) washer (601).
2. Remove the oil (pump to case) seal (605).





3. Remove the pump cover bolts (233).
4. Remove the pump cover (215) from the pump body (200).

OIL PUMP BODY DISASSEMBLE
REMOVAL PROCEDURE





1. Remove the pump slide inner (207) and outer (206) springs.
2. Place a rag over the springs while removing them to prevent the springs from flying out.





3. Remove the oil pump rotor (212) and pump vane rings (210).
4. Remove the pump vanes (213).
5. Remove the rotor guide (211).





6. Remove the pump slide (203), pump slide support seal (208) and the pump slide seal (209).
7. Remove the slide seal back-up O-ring seal (202) and the oil seal (slide to wear plate) ring (201).
8. Remove the pivot slide pin (205) and the pivot pin spring (204).





OIL PUMP ROTOR AND SLIDE MEASUREMENT

Important: You must measure the rotor and slide thickness for surface wear. The rotor and slide measurements must both fall into the same thickness range. If the rotor and slide measurements do not fall into the same thickness range, or are outside of all the ranges, the oil pump must be replaced as an assembly.
^ Refer to Oil Pump Rotor and Slide Measurement.
^ Measure the oil pump rotor (212) thickness.
^ Measure the oil pump slide (203) thickness.

OIL PUMP BODY BUSHING REPLACEMENT
REMOVAL PROCEDURE

- Tools Required
- J41778-1 Pump Body Bushing Installer/Remover
- J41778-2 Pump Body Bushing Position Stop





1. Inspect the oil body for the following defects:
- Worn or damaged bushings
- Foreign material or debris
- Porosity
- Scored or irregular mating faces
- Cross channel leaks





2. Remove the front helix retainer (244).
3. Remove the oil seal assembly (243).





4. Using the J41778-1 with an arbor press, remove the pump body bushing (242).





5. Using J41778-1 with an arbor press, install a new pump body bushing (242).





6. Use the J41778-2 to ensure proper bushing depth.

OIL PUMP BODY ASSEMBLE
INSTALLATION PROCEDURE

- Tools Required
- J25016 Pump Oil Seal Installer





1. Using the J25016, install the oil seal assembly (243).





2. Install the front helix retainer (244).





3. Install an O-ring seal (202) and oil seal ring (201) into the groove on the back side of the pump slide (203).
4. Use TRANSJEL (R) J36850, or an equivalent, to retain the seal and the ring on the slide.
5. Install the pivot pin spring (204) and the pivot pin (205).
6. Install the pump slide (203).
7. Index the slide notch with the pivot pin (205).
The oil seal ring must face downward into the pump pocket.
8. Install the pump slide seal support (208) and the pump slide seal (209).





9. Install the pump slide inner (207) and outer (206) springs.





10. Install the bottom pump vane ring (210) and the rotor guide (211) into the rotor (212) and retain with TRANSJEL (R) J36850 or an equivalent.
11. Install the rotor (212) with the rotor guide (211) toward the pump pocket.
12. install the pump vanes (213).
13. Install the top pump vane ring (210).

OIL PUMP COVER DISASSEMBLE





1. Remove the oil pump reverse boost valve retaining ring (221).
2. Remove the reverse boost valve sleeve (220) and the reverse boost valve (219).
3. Remove the pressure regulator isolator spring (218) and the pressure regulator valve spring (217).
4. Remove the pressure regulator valve (216).





5. Remove the oil pump converter clutch valve retaining ring (222).
6. Remove the stop valve (223) and the converter clutch valve (224).
7. Remove the converter clutch valve inner (225) and outer (226) springs.





8. Remove the pressure relief bolt rivet (227).
9. Remove the pressure relief spring (229) and the pressure relief ball (228).
10. Remove the oil pump cover screen (232) and the oil pump cover screen seal (231).





11. Remove the stator shaft oil seal rings (230).

OIL PUMP STATOR SHAFT BUSHING REPLACEMENT

- Tools Required
- J21465-01 Bushing Service Set
- J25019 Bushing Service Set
- J7004-1 Universal Remover
- J8092 Driver Handle





1. Inspect the pump cover; all check valve retainer and ball assemblies (237), cup plugs (235, 236) and orifice cup plugs (238, 240).





2. Inspect the pump cover for the following:
- Worn or damaged bushings
- Foreign material or debris
- Porosity
- Scored or irregular mating faces
- Cross channel leaks
- Ring groove damage





3. Using the J21465-15 with the J7004-1, remove the stator shaft front bushing (234).





4. Using the J21465-2 and the J8092, install a new stator shaft front bushing (234).





5. Using the J25019-14 with the J7004-1, remove the stator shaft rear bushing (241).





6. Using the J25019-6 and the J8092, install the stator shaft rear bushing (241).

OIL PUMP COVER ASSEMBLE

- Tools Required
- J38735-3 Stator Shaft Seals Installation Pusher
- J39855-1stator Shaft Seals Installation Protector
- J39855-2 Stator Shaft Seals Installation Sizer





1. Using the J39855-1 and the J38735-3, install the stator shaft oil seal rings (230).
2. Place J39855-2 over the seals.
3. Leave J39855-2 on the stator shaft until just before the pump is to be installed into the transmission.





4. Install the pressure relief ball (228) and pressure relief spring (229).
5. Install the pressure relief bolt rivet (227).
6. Install the oil pump cover screen seal (231) on the oil pump cover screen (232).
7. Install the oil pump cover screen (232) into the pump cover.





8. Install the converter clutch valve inner (225) and outer (226) springs.
9. Install the converter clutch valve (224).
10. Install the stop valve (223) and the oil pump converter clutch valve retaining ring (222).





11. Install the pressure regulator valve (216).
12. Install the pressure regulator isolator spring (218) and the pressure regulator valve spring (217).
13. Install the reverse boost valve (219) in the reverse boost valve sleeve (220).
14. Install the reverse boost valve and sleeve in the pump cover.
15. Install the oil pump reverse boost valve retaining ring (221).

OIL PUMP COVER AND BODY ASSEMBLE
INSTALLATION PROCEDURE

- Tools Required
- J21368 Oil Pump Body and Cover Alignment Band





1. Place the oil pump cover onto the oil pump body and put stator shaft through a hole in the bench.
2. Install the pump cover bolts (223) finger tight only.
3. Install the J21368.

Tighten the pump cover bolts (223) to 24 Nm (18 ft. lbs.).

Refer to Fastener Notice.

OIL PUMP ASSEMBLY INSTALLATION

- Tools Required
- J25025-1 Alignment Pins
- J39855-2 Stator Shaft Seals Installation Sizer





1. Install the J25025-1.





2. Remove the J39855-2.





3. Install the pump to drum thrust washer.
4. Use TRANSJEL (R) J36850 or equivalent to retain the washer to the pump.
5. Install the oil pump to case seal (5) on the oil pump assembly (4).





6. Install the pump cover to case gasket (6).
7. Install the oil pump assembly (4) into the case and align all holes properly.





8. Install the pump to case bolts.

Tighten the bolts to 29 Nm (21 ft. lbs.).

Refer to Fastener Notice.
9. Remove J25025-1.





10. Install the remaining pump to case bolts, in the holes where J25025-1 was.

Tighten the bolts to 29 Nm (21 ft. lbs.).