And Another Overdrive Question

[Naomi]

Hubby is really digging into my overdrive transmission on the 80 and replacing all O-rings and such. He's at a little stop right now because he doesn't have the right tool to get to the oil pump. What type tool does he need?

Oh he is working from under the car

 

[wrenchpuller]

Hi Naomi,
I assume your looking at the pump retaining plug...round with 2 holes in it.
The correct tool 18G118 can be replaced with a pin wrench having pins of the correct dia.
Failing to find one of these in Bills toolbox, you can use 2 snug fitting drill bits (shank end into the holes) or a couple of steel pins of correct size and either use a bar between them (as close to the plug as you can get) or a slim jawed cresent wrench that will cover both pins/drills.
It may help if you give the plug a couple of sharp raps with a SMALL hammer before trying to loosen.

Cheers Ric

 

[Naomi]

Thanks Ric. Yes it is the pump retaining plug with the two round holes. What should he should look for when he gets the plug out

 

[wrenchpuller]

Naomi, what Bill should be looking out for are parts rainng down...LOL, no not quite that bad. Study the manual and find out what you may expect to see. plug, o-ring, pump body and spring/plunger. plunger may hang up and have to be fiddled down seperate.
Dissmantling it is fairly straight forward. Re-installing the pump assy is a bit more awkward. Plunger at the top (roller end has a flat on it, make sure that it facing the correct direction. While you have the pump out check that the cam on the output shaft (works the pump plunger) make sure it is not freewheeling on the shaft. I prefer to position the cam in its uppermost position when installing the pump assy, takes some of the pressure off the spring and makes it easier to screw in the retaining plug

Cheers Ric

 

[nchokie]

caught you Na.

R.D.

 

[wrenchpuller]

Hi again Naomi,
I was not thinking, forgot to mention. First thing you will find after removing the retaining plug will be the spring, ball and seat for the pump check valve. Spring and ball WILL FALL OUT , be prepared as the ball is only about 3/16" and will hide in any crack or crevace available. The spring is not very large either, also has a tendency to run and hide if not closely watched.
The ball if still in good condition can be re-seated into the seat using a soft punch and moderate hammer tap.

Cheers Ric

 

[Naomi]

caught you Na.

R.D.

That you did R.D. and I'm glad to see you over here