The Stovebolt Site Forums The Shop Area Engine Shop Can a clutch be installed backwards?

Last night I finally got my transmission put back in but as I laid awake in bed thinking of my progress I began to wonder if I put the clutch in the proper way. Is it possible to put it in backwards? If I did manage to do such, what are the consequences? I am hoping that it does not fit backwards and the more I think of it I am starting to convince myself so as I do not see it fitting against the flywheel if it were in properly. My clutch seems to fit perfectly and it works when I press on the peddle. I really hope I do not need to remove that transmission again!

Also, what type of fluid would I use to fill up my transmission, Just normal manual transmission fluid? How much do I put in, just to the bottom of the fill hole or a measured amount?

My ’41 clutch is a 10-3/4” unit for a ¾ ton pickup and it would only go together one way. There is an extended boss on one face of the clutch disk and it has to go to the flywheel side. The pressure plate will not come up to touch and clamp on the clutch disk if clutch disk is installed backwards. If it is working you have it installed correctly.

The owner’s manual calls for S.A.E. 90 Hypoid lube in both the transmission and differential. 3 spd. 1-1/2 pints. 4 spd. 5-1/2 pints. In the old days when I first worked in a gas station we would stick our finger in the fill hole and if you could touch the oil it was ok.

1 liter = 2.113 pints

Thanks a lot.

So when you say SAE 90 Hypoid...can I use SAE 75W90 API GL-5? I just read that some older vehicles cannot handle the EP additive due to the copper on the gears? Have you heard of this?

Prop the clutch pedal down or get someone to hold it. Get under neath & make sure the disc is close to the flywheel & will turn.