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Shade Tree Mechanic
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OP
Shade Tree Mechanic
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Posts: 105 |
I have just reinstalled my trucks trans after rebuilding the rear end and getting the 207 up and running. when I purchased the truck it did not run. Now that I finally have everything back together I was able to test drive it. The problem I am experiencing is a clutch chatter particularly in first gear. I sent the clutch to jim carter to rebuild it,but I only cleaned the pressure plate. I could not find any info on torque of the installation bolts or the three fingers that hold the throw out bearing riding surface. Does anyone have any thoughts or recommendations???
Hainscou
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Joined: Sep 2004
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Backyard Mechanic
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Backyard Mechanic
Joined: Sep 2004
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You weren't specific on what Jim Carter did but it's a good idea to resurface the flywheel and pressure plate and have them balanced together. Make sure the clutch disc is not contaminated with oil, dirt, etc.
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Joined: Jan 2002
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ChatMaster - 25,000
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ChatMaster - 25,000
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Also necessary to have engine bolted down securely. Motor mounts must be in good condition.
Going to the rear the differential to the spring supports should the tight. That is clamped tight to the axle tubes.
Gene Schneider
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Joined: Nov 2002
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ChatMaster - 7,000
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ChatMaster - 7,000
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Check the fit of the splines on the input shaft. Wear on the splines on either or both can cause excessive play.
Steve D
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Joined: Jan 2002
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ChatMaster - 25,000
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ChatMaster - 25,000
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Any loosnes in splines, trasmisiom gears etc. will encourage clutch chatter. Also ues 140 or 600 gear oil in the transmission and differential like the shop manual states.
Last edited by Chev Nut; 10/05/16 01:05 PM.
Gene Schneider
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Joined: Jul 2014
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Shade Tree Mechanic
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OP
Shade Tree Mechanic
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What should the torque be for the pressure plate installation and spring bolts??
quote=Chev Nut]Any loosnes in splines, trasmisiom gears etc. will encourage clutch chatter. Also ues 140 or 600 gear oil in the transmission and differential like the shop manual states. [/quote]
Hainscou
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Joined: Jul 2003
Posts: 521
Oil Can Mechanic
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Oil Can Mechanic
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The throwout bearing is made of carbon and unless it's in good shape you may experience what you're calling "clutch chatter". Be sure it's in good alingment with the levers, put a little oil on it and see if the chatter goes away.
ron
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ChatMaster - 1,000
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That oiling should be just enough to wet not drip or sling off as it will cause trouble if it drips anywhere.
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Joined: Jul 2014
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Shade Tree Mechanic
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OP
Shade Tree Mechanic
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I've found the main shaft of transmission at the universal joint end has a significant amount of play in it. I'm assuming there should be no play, which would indicate the rear main shaft bearing is worn or damaged. Is my assumption correct?? Where would I find one of these bearings???
Hainscou
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Joined: Jan 2002
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ChatMaster - 25,000
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ChatMaster - 25,000
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Assuming it is a three speed it is a New Departure 7506, Chevrolet # 954387. Fits 1932-1936 3 speeds except Standards and Warner transmissions.
I would also consider replacing the U joint while apart.
See "parts for-sale" for new U joint at a reasonable price. (my old ad).
Gene Schneider
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ChatMaster - 6,000
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While you are in the area of the universal joint check for play between the diveshaft and torque tube (oakie bush), if there is play there it can feel like the tailshaft is bent or out of balance.
Tony
1938 1/2 ton Hope to drive it before I retire
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Chevys were somewhat known for clutch chatter during this period. There were aftermarket kits, consisting of an external apparatus, to address the issue. Their effectiveness is questionable.
Mike
ml.russell1936@gmail.com
Many miles of happy motoring
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Joined: Jan 2002
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ChatMaster - 25,000
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ChatMaster - 25,000
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I don't remember if this was mentioned in earlier posts but too much play in the rear spring to axle housing saddles can add to the problem. Just a little looseness here and there that slowly developes due to wear contributes to the problem.
Last edited by Chev Nut; 12/22/16 02:49 PM.
Gene Schneider
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