Read up on the bushing and figuring I'll replace it as long as the trans is out, because it seems to be a common source of leaks on higher mileage transmissions like mine. I appreciate the help. Thanks.
Since you will have the pump open, do the following checks:
- Inspect the pump body working surface for scoring, unusual wear, etc
- Check the leading and trailing edge of the crescent - wear here is ceru detrimental to line pressure management inside the unit
- Inspect the drive and driven gear for wear, scoring, cracks - check the teeth (both sides of each tooth and crest for wear as well. You can also put them together then attempt to slide the drive gear out of engagement from the driven gear while on the bench...If the drive gear easily comes out of engagement from the driven gear, the gear set is worn and should be replaced.
- If you have a straight edge and feeler gauges (and/or a depth mic, 0-1" ouside mic, 4-5" outside mic and inside mic) check the clearances between the face of each gear and pump body deck surface...I prefer a gear face to deck clearance between .0008-.003....If your clearance is in excess of .003, I'd buy new set of gears.
- Use a feeler gauge to check the gap between the outer diameter of the driven gear and the inner diameter of the pump pocket...If it's more than .005" buy a new set of gears
LMK if you have any ?s
