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sm420 ????s 235 chevy 1954
#1204008 02/12/2017 6:05 PM
Joined: Jan 2014
Posts: 74
NE pa
B
BJF52
Offline
Shop Shark
BJF52
Shop Shark
B Offline
Joined: Jan 2014
Posts: 74
NE pa
HI, can any one help me with a few ?s i have. I will try to explain as best i can. JUST did a first start on my truck FRANKIN,runs well . here is the 2 problems .1) if i keep the clutch in the engine runs but if i let it out it will stall like the trans is stuck. so i took the tork tube off and tryed to spin the yoke no deal. So i took the shifter top off and it now will spin all the way to rear wheels. I figured i would have bits of gear and shavins (clean) & it looks good no rust.the trans top is all gunked up and dry,wd40d it to soak.could that gunk be the problem?old oil in it is full.2)The uni joint seems to be sloppy a lot of movement side to side. should it be tight but free? I have never seen or taken this kind of tranny apart only the 3 speeds (the simple ones) THANKS for any feed back or help. BJF
Re: sm420 ????s 235 chevy 1954
BJF52 #1204104 02/13/2017 5:10 AM
Joined: Jun 2011
Posts: 5,096
Longmont, CO
E
EdPruss Offline
Crusing in the Passing Lane
EdPruss
Crusing in the Passing Lane
E Offline
Joined: Jun 2011
Posts: 5,096
Longmont, CO
3 or 4 speed trans.' are all just as simple.

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: sm420 ????s 235 chevy 1954
BJF52 #1204122 02/13/2017 12:51 PM
Joined: Mar 2002
Posts: 9,115
Bracebridge Ontario Canada
truckernix Offline
'Bolter
truckernix
'Bolter
Offline
Joined: Mar 2002
Posts: 9,115
Bracebridge Ontario Canada
When you separate the U joint you can slide it from side to side. That movement is not possible when it is back in the tube.

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!
Re: sm420 ????s 235 chevy 1954
truckernix #1204132 02/13/2017 2:26 PM
Joined: Jan 2014
Posts: 74
NE pa
B
BJF52
Offline
Shop Shark
BJF52
Shop Shark
B Offline
Joined: Jan 2014
Posts: 74
NE pa
OK, 1 problem solved, it is not binding. thank you. BJF

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