The Stovebolt Page Forums Home | FAQ | Forum | Swap Meet | Gallery | Tech Tips | Events | Features | Search | Hoo-Ya Shop
Helping out ...


EVENTS

Check in for status!

Jump over to the Events Forum, to post events -- new ones or the ones we have been enjoying for some time.
Look to see what's been cancelled or postponed.

Encourage one another!

Stovebolt Site Search
 
Old Truck Calendars
Months of truck photos!
Nothing like an old truck calendar

Stovebolt Calendars

Check for details!


Who's Online Now
0 members (), 137 guests, and 3 robots.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums50
Topics121,069
Posts970,530
Members43,832
Most Online1,229
Jan 21st, 2020
Image Posting Policy
Previous Thread
Next Thread
Print Thread
Page 1 of 2 1 2
Replacing Clutch in 1946 Two Ton Truck
#1371619 Sat Aug 01 2020 02:39 PM
Joined: Jul 2020
Posts: 5
D
New Guy
My clutch is slipping and I’m pretty sure I need to replace it. Is this a job for a DIYer or do I need to go to a shop? I’ve done quite a bit of mechanical work, but I haven’t tackled a clutch yet.

Re: Replacing Clutch in 1946 Two Ton Truck
Dennis67 #1371691 Sat Aug 01 2020 09:31 PM
Joined: Mar 2019
Posts: 1,038
G
Shop Shark
As long as you have the right equipment and a place to do it, why not? Just remember, the bigger the truck, the heavier the parts.

Re: Replacing Clutch in 1946 Two Ton Truck
Dennis67 #1371730 Sun Aug 02 2020 01:04 AM
Joined: Jun 2011
Posts: 3,633
E
Shop Shark
An engine hoist through the passenger door after removing the 'tin' floorboards will take care of moving the trans back after removing the driveshaft. If a torque tube, the whole works needs to be moved back. No need to remove trans unless it needs attention. Lower two bolts(3/4" hex wrench) might remove from inside bellhousing. Loosen clutch pressure bolts one at a time while rotating flywheel, last one requires attention to not drop whole works. Inspect pressure plate and disc for unusual wear pattern. Get new pilot bearing and new throwout bearing. Should come with plastic realignment tool, or a spare trans input shaft will work.

Insert pilot bearing, ask if not know how. Place new clutch disc upon flywheel, only goes one way, insert tool to hold disc in place, insert throwout bearing in pressure plate fingers, and clutch release arm, several configurations exist, while starting one bolt to hold it all in place, continue to insert bolts in alternating holes. When all started, tighten alternating bolts a little at a time, soon will start to take up clutch spring(normal) until all tight, blue locktite useful, remove tool, making sure it easily comes out. If tight, loosen pressure plate bolts and tighten again maintaining easy movement. Reinsert trans making sure release bearing and release arm stay aligned.

Ed


'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
Re: Replacing Clutch in 1946 Two Ton Truck
Dennis67 #1371768 Sun Aug 02 2020 11:48 AM
Joined: Mar 2019
Posts: 1,038
G
Shop Shark
Another idea if you dont have an engine crane is use a motorcycle jack under the trans. Of course, if its an open drive shaft setup.

Re: Replacing Clutch in 1946 Two Ton Truck
EdPruss #1371783 Sun Aug 02 2020 02:05 PM
Joined: Jul 2020
Posts: 5
D
New Guy
Thank you. That’s exactly the information I needed.

Re: Replacing Clutch in 1946 Two Ton Truck
Dennis67 #1371819 Sun Aug 02 2020 08:07 PM
Joined: Jun 2011
Posts: 3,633
E
Shop Shark
I used to use a scissors jack on a roller skate, employ better methods now.

Ed


'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
Re: Replacing Clutch in 1946 Two Ton Truck
Dennis67 #1371820 Sun Aug 02 2020 08:23 PM
Joined: Sep 2013
Posts: 7
5
New Guy
A regular transmission jack with 4 wheels under it and a strap to go around the transmission is handy for the job. A motorcycle jack may work just as well as suggested above, I'm not directly familiar with a motorcycle jack.

If your clutch is slipping are you sure it doesn't just need adjusting? Do you have any free play at the top of the clutch pedal? Free play is where the clutch pedal pushes down easily for maybe an inch, and then pushes harder as the throwout bearing begins to push on the pressure plate. In case you are not familiar with the term.

Re: Replacing Clutch in 1946 Two Ton Truck
Dennis67 #1371904 Mon Aug 03 2020 12:24 PM
Joined: Jun 2011
Posts: 3,633
E
Shop Shark
If one is not sure a clutch is slipping or not adjusted properly, a slipping clutch will slip more in high gear, more torque load on engine, improperly adjusted clutch will slip in many gears, plus the throwout bearing will soon expire.

Ed


'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
Re: Replacing Clutch in 1946 Two Ton Truck
58n63 #1371909 Mon Aug 03 2020 12:55 PM
Joined: Jul 2020
Posts: 5
D
New Guy
I did adjust the clutch to get an inch of free play. It seems to slip a little bit in each gear, and is worse in 3rd and 4th. I might try to adjust it again before I take it apart.

Re: Replacing Clutch in 1946 Two Ton Truck
Dennis67 #1371923 Mon Aug 03 2020 02:54 PM
Joined: Mar 2002
Posts: 9,031
Master Gabster
I used a plastic tool for centering the clutch and it worked really well. I also used a scissors jack on roller wheels to support and move the transmission back. I made a wooden rest to sit the transmission on and used the straps on the jack.


1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed


My Chevy Master 4 Door is on the Road!
Page 1 of 2 1 2

Moderated by  69Cuda, Grigg 

Link Copied to Clipboard
Home | FAQ | Forum | Swap Meet | Gallery | Tech Tips | Events | Features | Search | Hoo-Ya Shop
Powered by UBB.threads™ PHP Forum Software 7.7.4