C1 4spd trans fluid leak

[Al R.]

Anyone know of a quick fix or the best way to stop the fluid from exiting around the front input shaft of a 59 4 spd. I will be pulling the engine & trans out together in the next 3-4 weeks and would like to remedy the problem while it's out. If memory serves me correctly, I don't remember there being a seal at this location. Thanks all!

[William C.]

Re: C1 4spd trans fluid leak

No seal, just an oil slinger between the bearing and gear as well as attention to not overfilling the trans.

[Al R.]

Re: C1 4spd trans fluid leak

Bill, I seem to recall that they are not to be filled up to the filler hole. Is this correct and how much lower down before the hole should the fluid level be to prevent any damage to the trans ?

[William C.]

Re: C1 4spd trans fluid leak

Service manual says fill to 1/2 inch below the level of the fill plug when cold. 1958 service manual General lubrication section 2-4 A perhaps more useful guide is the 1960 "Motors" which indicates 1.5 pints for capacity of the 4 speed trans.

[Al R.]

Re: C1 4spd trans fluid leak

Thanks Bill! Al

[Joe L.]

Re: C1 4spd trans fluid leak

Thanks Bill! Al

Al-----

Apply sealer to the 4 bolts that retain the front bearing retainer to the main case.

[Al R.]

Re: C1 4spd trans fluid leak

Thanks Joe. I'll definitely do that. Also, will the oil slinger wear out over time causing it to need replacement? car has approx 84,000 documented miles. Where could 1 be found if needed?

[Joe L.]

Re: C1 4spd trans fluid leak

Thanks Joe. I'll definitely do that. Also, will the oil slinger wear out over time causing it to need replacement? car has approx 84,000 documented miles. Where could 1 be found if needed?

Al------


I don't recall that T-10's used an oil slinger. In any event, oil slingers generally do not wear out so if there's one there it should be good for re-use.

[Al R.]

Re: C1 4spd trans fluid leak

Joe, Bill Clupper stated earlier that it has a slinger between the bearing and gear, so I assumed from him that it had one--not sure as I never had it apart.

[William C.]

Re: C1 4spd trans fluid leak

May not have, I was speaking of a generic trans.

[Al R.]

Re: C1 4spd trans fluid leak

Thanks Bill,

[Erich C.]

Re: C1 4spd trans fluid leak

Your T-10 should have a front seal. The input shaft is retained by a snap ring. The seal is pressed into the front bearing retainer. The later 2nd. design ( Super T-10 ) and Muncie's used a threaded nut on the input shaft. That nut doubled as an oil slinger. They do not use a front oil seal. Here are two photos of the seal. Your can see the CR pt. no. in the photo. The Timken pt. no. is 7412S.
Erich

[William C.]

Re: C1 4spd trans fluid leak

I'm sorry, but I can't let that one pass. I have attached photos of the front bearing retainer from a '59 T-10 that I'm currently rebuilding for resale. There is NO provision for a seal in the early T-10, as shown in the pictures. There is a drain thread cut into the inside of the housing but the seal did not appear until the Super T-10, introduced MUCH later.

[Bruce B.]

Re: C1 4spd trans fluid leak

I agree with Bill, NO front seal on the input shaft.

Al, could it be that the leak is coming from the countershaft?
This can happen if the trans is filled to the bottom of the case plug.
I topped up all the fluids on a previous 62 right before a buyer came to look at it.
A nice pool of oil was found under the car after filling.

[Al R.]

Re: C1 4spd trans fluid leak

Bruce, it's possible. It's been 10 plus years since I put fluid in it (after installing another engine for driving). Most likely I would have filled it to the bottom of the filler hole,( but when the transmission and engine were removed together, the clutch, had oil/grease on the pressure plate side), but that's not to say the previous owner had not done the same thing with fluid top off. Just wondering how long it would take to leak out enough fluid to get it down to the point where it wouldn't leak out in this area. (Please no smart answers about till it runs out of fluid or locks up)