Spicer 4 Speed Clutch adjust - Page 2
 

Spicer 4 Speed Clutch adjust

Started by Fredward, July 18, 2012, 12:41:15 PM

Previous topic - Next topic

luvrbus

I always thought it as a waste of money to install the double disk clutch in a converted bus you drive 1 or 2 times a year those were installed because of the stop and go and different drivers we change the Eagles over to a single disk mushroom type clutch they don't give any problems.

They cost about 1/2 of what a double disk  clutch costs I never understood why GM and MCI people want the double disk clutch they are always a PITA but like they say we all do it different

good luck
Life is short drink the good wine first

bevans6

Clifford, i for one am good to go with replacing or in my case repairing what was in there - the stock MCI double plate clutch with a floater disc. I just would be lost trying to select and set up a single plate clutch with a different thickness, etc.   I agree with you that a single plate clutch would probably be fine, but mine had unknown but high miles on it, was in great shape and the grinding marks on the plates and flywheel were still perfect.  That reliability and length of service is good...

Fredward, yes - pedal height is what I suggested you check and adjust.  Yes, thicker floor will make a difference.  Heat will make a big difference - mine is quite hard to engage first when it's fully up to operating temp.  You just shift into first before you stop, and wait at the light with your clutch foot down and your leg starting to hurt...  I think the double plate clutches are inherently draggy and will keep the gears rolling inside the gearbox for a long time.  Mine can take 30 seconds before I can shift into first.  You can shift into any gear, all you need to do is get the gears stopped, use third or fourth if you want to save wear on first gear dogs.  We really need a clutch brake, or a gear brake.  I was designing one last year, but gave up on it.

Brian
1980 MCI MC-5C, 8V-71T from a M-110 self propelled howitzer
Allison MT-647
Tatamagouche, Nova Scotia

Fredward

Brian it amazed me when I got mine apart to find no clutch break at all! I just figured it was shot and I'd replace it when I was replacing the main clutch. My neighbors came over and looked and just shook their heads.

I adjusted the knob tonight as discussed earlier in this thread (thanks Bob!) and everything seems good for now. I maneuvered around the yard quite a bit tonight.

We will run over to Wisconsin this weekend so that will be a little better demonstration.

Fred
Fred Thomson