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#1 |
Registered User
Join Date: Mar 2010
Location: Austin, TX
Posts: 104
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New Clutch
Hey guys!
Good news! now i know what a slipping clutch feels like! SO! I'm going to get a new one this weekend and try to replace it myself. i have a granny 4-speed and from what i've heard from some postings, they're a might heavy. is there a "how to" posting somewhere in this msg board? and I'm wondering of one of the OEM reproduction jobbies will do the trick like this one it seems pretty inexpensive. thanks a lot y'all ![]()
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'64 Corvair Ragtop '66 C10 Stepside "The oxen may be slow, but the Earth is patient" |
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#2 |
Registered User
Join Date: Dec 2007
Location: N Texas
Posts: 580
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Re: New Clutch
For regular use, sure, nothing wrong with Sachs.
Im using a Hays, pretty orange paint. LOL. GM clutches come 10.4 (car), 11 (common truck), and 12" (big). Check and see what you have before you order. Your spline count is probably 10.
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292 + TKO500 Last edited by Heater63; 05-03-2010 at 06:57 PM. |
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#3 |
Registered User
Join Date: Mar 2010
Location: Austin, TX
Posts: 104
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Re: New Clutch
Is there a trick to dropping the trans?
I'm going to attempt this tomorrow. was wondering if any of you cats had a tip or a "do not do!"
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'64 Corvair Ragtop '66 C10 Stepside "The oxen may be slow, but the Earth is patient" |
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#4 |
Registered User
Join Date: Jan 2009
Location: Reno, NV
Posts: 92
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Re: New Clutch
a clutch is a pretty big job...you haven't done this before? you'll really want to invest in an attachment for your floorjack to hold your tranny. 2wd or 4? a 4wd transfercase adds a lot of weight. you're going to run into snags. i see lots of swear words in your future. however if you want a step by step, here goes...
remove transmission tunnel cover. remove bolts top the sm420 and pry off can shifter and trans top (stuff a towel around the gears as to not get them dirty!) support motor and trans aside from crossmember remove exhaust or anything else that could be in the way disconnect speedo and e-brake disconnect driveshafts (tape up your barrings so the needles don't fall out) disconnect clutch mechanism (whether hydro or mechanical) remove bolts from crossmember to tranny remove crossmember (this aids in aiming the outputshaft back into the pilot barring) support trans with floor jack remove bolts from bellhousing to engine block pull trans down and back remove bolts from clutch pressure plate remove clutch from flywheel remove flywheel ********TAKE FLYWHEEL TO MACHINE SHOP!!!!!!!!!!***********###### also consider flipping your ring gear or replacing it...(theres a trick with an oven lol) remove pilot bearing by any means possible(i have a trick with grease and a plug to hydrolically displace the barring hit me up when you get to this point) bolt everything back down now the fun part...you'll have to manuever the trans shaft back into the clutch and into the pilot barring. you can use the output to turn back and forth to work into the clutch. it's kind of like a space shuttle dock and it has to be just right.... bolt it all back up....
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'64 4x4 Stepside 350/sm420, going L92 in the near future '05 GTO that gets more attention than my truck '69 Jeepster Commando that needs more attention than my truck '71 wagoneer that gets less mpg than the gto |
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#5 |
Registered User
Join Date: Mar 2010
Location: Austin, TX
Posts: 104
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Re: New Clutch
Dude. awesome. thank you.
I think i can handle this. It will defiantly involve a few choice words and at least 2 bloody knuckles. at least the 90 degree weather is already here. ![]()
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'64 Corvair Ragtop '66 C10 Stepside "The oxen may be slow, but the Earth is patient" |
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#6 | |
Account Suspended
Join Date: Jul 2007
Location: Plumas Lake, Ca.
Posts: 1,009
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Re: New Clutch
Quote:
For reference take a few photos prior to disassembly to use if you need a guide during reinstall. |
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#7 |
1961 crewcab
Join Date: Dec 2007
Location: missoula, mt
Posts: 6,164
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Re: New Clutch
great play by play guys, if you do take off the bellhousing and crossmember, you will need to support the back of the motor somehow, an extra floorjack with a 2X4 ( so not to dent the oil pan) helps
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60 build: http://67-72chevytrucks.com/vboard/s...d.php?t=280904 61 crew build: http://67-72chevytrucks.com/vboard/s...d.php?t=646830 63 build: http://67-72chevytrucks.com/vboard/s...d.php?t=336537 64 'burb build: http://67-72chevytrucks.com/vboard/s...d.php?t=448681 65 'burb build: http://67-72chevytrucks.com/vboard/s...d.php?t=590715 65 build: http://67-72chevytrucks.com/vboard/s...d.php?t=281955 |
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#8 |
Registered User
Join Date: Jan 2009
Location: Reno, NV
Posts: 92
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Re: New Clutch
Bob, i forgot to tell you, other than a standard set of sockets and wrenches you'll want to invest in a flywheel turning tool. you can use some other things, but it will make it a ton easier getting bolts off the pressure plate and flywheel. torque wrench is ideal so you can get flywheel around 65-70lb and the pressure plate to 35-40lb
i didn't know about the trans support on the 2wd 420s.. good to know. also i could get my clutch out the inspection, but flywheel was a little big.
__________________
'64 4x4 Stepside 350/sm420, going L92 in the near future '05 GTO that gets more attention than my truck '69 Jeepster Commando that needs more attention than my truck '71 wagoneer that gets less mpg than the gto |
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#9 | |
Registered User
Join Date: Jan 2009
Location: Reno, NV
Posts: 92
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Re: New Clutch
Quote:
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__________________
'64 4x4 Stepside 350/sm420, going L92 in the near future '05 GTO that gets more attention than my truck '69 Jeepster Commando that needs more attention than my truck '71 wagoneer that gets less mpg than the gto |
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#10 |
Cantankerous Geezer
Join Date: Aug 2002
Location: Bel Aire, KS
Posts: 6,264
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Re: New Clutch
I have always bought the clutch locally. With the 4 speed you need (at a minimum) a floor jack and someone to help. You shouldn't have to remove the shifter, just back up the tranny and lower it. You can also use an engine hoist by going in the driver's door.
The SM420 weighs about 135 lbs. Just heavy enough to cause problems. A clutch alignment tool helps, as does two long bolts with the heads cut off. Put them in the top holes for alignment, makes stabbing the tranny back in a bunch easier.
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Fred There is no such thing as too much cam...just not enough engine. ![]() |
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