Clutch Help

[pappy]

I posted this in 40 Tech too. I need help. When I push in the clutch the rod on the slave moves the fork, but the tranny doesn't disengage from the engine. Any idea what I did wrong?



2F engine
4-speed bellhousing
Diaphragm clutch
Late 70's master cylinder (used)
Late 70's slave cylinder (new)

[Beowulf]

Wrong pressure plate?
-Mike-

[pappy]

Wiser men have suggested my disk is in backwards. I guess the tranny will be coming off.

Poop.

[Beowulf]

Originally Posted by pappy

I guess the tranny will be coming off.

Too bad. I have heard that it is possible to assemble automotive parts incorrectly but that has never happened to me so I wouldn't know much about that.



-Mike-

[pappy]

Originally Posted by Beowulf

Too bad. I have heard that it is possible to assemble automotive parts incorrectly but that has never happened to me so I wouldn't know much about that.



-Mike-

Thanks Mike. This is twice this month. You would think that after all these years I'd learn to read a service manual.

[alia176]

Originally Posted by pappy

Wiser men have suggested my disk is in backwards. I guess the tranny will be coming off.

Poop.

Curious, if the clutch disk is backwards, that would be an engaging issue while the flywheel is spinning. As in, the clutch is slipping and the vehicle isn't going anywhere. Or is my logic wrong?

You are not able SHIFT out of gear from what I gather. Wouldn't that be a linkage/clutch fork/TOB type of issue?

Can you somehow move the fork even more to see if anything changes?

[pappy]

From what the wise men said the clutch disk is bound up on the flywheel bolts preventing it from spinning.

[alia176]

Originally Posted by pappy

From what the wise men said the clutch disk is bound up on the flywheel bolts preventing it from spinning.

ahhh.....

Sucks that you gotta drop that SOB again

[Cruisergreg]

Make sure to think through your clutch fork and hydraulics. There's a whole mishmash of parts that had been used in the late 40 and 60 eras. Getting the wrong collection can cause the problems you describe. IIRC the H55FF MUST use the later 60 series hydraulics and fork to get the correct throwout.

[SteveLCetc]

Originally Posted by alia176

ahhh.....

Sucks that you gotta drop that SOB again

He's gonna drop it all again anyway, just for fun...

[pappy]

Originally Posted by Cruisergreg

Make sure to think through your clutch fork and hydraulics. There's a whole mishmash of parts that had been used in the late 40 and 60 eras. Getting the wrong collection can cause the problems you describe. IIRC the H55FF MUST use the later 60 series hydraulics and fork to get the correct throwout.

I researched this before I started. What I learned is:

• Clutch disk was used from: 1958-1987
• Pressure plate was used from: 1975-1987
• TO Bearing was used from: 1975-1987
• Flywheel was used from 1975-1987
• Clutch fork was used from: 1975-1985
• Bellhousing was used from 1975-1980
• Clutch master was used from: 1975-1980
• Clutch slave was used from: 1975-1980

So, the only parts that seem to be paired were the clutch master, slave, and bellhousing. Otherwise, the clutch guts are consistant from 1975 up to 1987. My master, slave, and bellhousing fall into the 1975-1980 range.

Originally Posted by SteveLCetc

He's gonna drop it all again anyway, just for fun...

Actually I was going to try and keep the engine and tranny attached when I pull it, and install it. Might take two engine hoists, but that was my intention.

[slimbuddha]

Did you give up?

FJ40
FJ40 - $3000 (ALBUQUERQUE)

Reply to: sale-738790072@craigslist.org
Date: 2008-07-01, 12:05AM MDT


FJ 40 1968 NEEDS CLUTCH

[Cruisergreg]

Originally Posted by pappy

So, the only parts that seem to be paired were the clutch master, slave, and bellhousing. Otherwise, the clutch guts are consistant from 1975 up to 1987. My master, slave, and bellhousing fall into the 1975-1980 range.

I see two potential problems

H55F was only ever used with the 3F (or diesel equivalent) bell house as far as I know. I know for a fact that the 3F bellhouse has a cant to it compared to the earlier one and could have other dimensional differences (too long or too short).

The hydraulics need to match the other components to work correctly - I imagine that's why they were used only until 1980. For shits & giggles you might try adjusting both the master and slave rods, if they have that capability.

[BionicCruiser]

i had the same problem when i put the SM465 in my 40. of course, my problem was that the chevy disk came in multiple sizes and the disk was being caught in between the pressure plate and the fly wheel once bolted together. (disk too big). i'm not good with the toyota stuff as well, so good luck.

[pappy]

Originally Posted by Cruisergreg

The hydraulics need to match the other components to work correctly - I imagine that's why they were used only until 1980. For shits & giggles you might try adjusting both the master and slave rods, if they have that capability.

Fortunately, they are adjustable. That was the first place I started and I was able to get the slave rod to move the fork enough to where I thought it would work. Not.