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2020

A New Year
A New Decade
A New Vision

Ring in the new with some quality time with your old truck! A great time to tackle a winter project. If you do not have access to your truck, start your parts list for spring!
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Something to turn the crankshaft to adjust the valves #1342159 Tue Jan 14 2020 06:28 PM
Joined: Oct 2009
Posts: 127
W
wokri Offline OP
Shop Shark
Hello,
what do you use to turn the pulley on the crankshaft to adjust the valves? It's a Chevy 3600 with 235 cui engine.
Ask
Wolfgang

Re: Something to turn the crankshaft to adjust the valves [Re: wokri] #1342161 Tue Jan 14 2020 06:58 PM
Joined: Aug 2017
Posts: 293
S
Shaffer's1950 Offline
Shop Shark
Original Hand Crank.
I also fabricated a small tool that fits it and welded a 1/2" socket on end.
***Is yours held on by a bolt or original style pressed on?

Last edited by Shaffer's1950; Tue Jan 14 2020 09:02 PM.
Re: Something to turn the crankshaft to adjust the valves [Re: wokri] #1342162 Tue Jan 14 2020 07:19 PM
Joined: Oct 2009
Posts: 127
W
wokri Offline OP
Shop Shark
Hello, can you show me a picture of your tool?
Wolfgang

Re: Something to turn the crankshaft to adjust the valves [Re: wokri] #1342164 Tue Jan 14 2020 07:28 PM
Joined: Sep 2001
Posts: 29,112
tclederman Offline
Boltergeist
Here are some flywheel turning tools.

I think that not all stovebolt engines have bolts holding the harmonic balancer unto the crankshaft?


Tim
1954Advance-Design.com
1954 3106 Carryall Suburban - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic - part of the family for 15 years
Z-series (54/55) GMC 350 (2-ton) COE - now part of Dave's family
- If you have to stomp on your foot-pedal starter, either you, or your starter, or your engine, has a problem.
- The 216 and early 235 engine are not "splash oilers" - this is a splash oiler.
Re: Something to turn the crankshaft to adjust the valves [Re: wokri] #1342165 Tue Jan 14 2020 07:35 PM
Joined: May 2015
Posts: 1,674
K
klhansen Offline
Shop Shark
That one that Tim posted would need access to the flywheel ring gear teeth. Not the most convenient way to hand turn an engine.
On a stovebolt engine that had a crank, take a cheapo 1/2" extension and drill a 1/4" hole thru the square end and drive a piece of 1/4" steel rod thru so it's sticking out about 1/4" or so on either side. The 1/4" rod will engage the balancer where the original crank did. You may have to tack weld the rod in place on the end of the extension. You need a bit of the extension sticking out the end to center it in the balancer. I was going to take a picture of the end of my original crank, but it's buried behind a bunch of other stuff in the garage. frown

If the spark plugs are out, you should be able to turn the engine with the fan blades as long as the belt is snug.

Last edited by klhansen; Tue Jan 14 2020 07:39 PM.

Kevin
First car '29 Ford Special Coupe
#2 - '29 Ford pickup restored from the ground up.
Newest Project - 51 Chevy 3100 work truck. Photos
Re: Something to turn the crankshaft to adjust the valves [Re: wokri] #1342167 Tue Jan 14 2020 07:38 PM
Joined: Sep 2001
Posts: 29,112
tclederman Offline
Boltergeist
I can move mine with the fan blade as described by Kevin


Tim
1954Advance-Design.com
1954 3106 Carryall Suburban - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic - part of the family for 15 years
Z-series (54/55) GMC 350 (2-ton) COE - now part of Dave's family
- If you have to stomp on your foot-pedal starter, either you, or your starter, or your engine, has a problem.
- The 216 and early 235 engine are not "splash oilers" - this is a splash oiler.
Re: Something to turn the crankshaft to adjust the valves [Re: wokri] #1342174 Tue Jan 14 2020 08:18 PM
Joined: Jun 2008
Posts: 286
S
Stove Offline
Shop Shark
I also move mine with the fan blade. For me, I need to push down on the fan belt with the right hand, just a bit to tighten it up. Then I pull up on the blade with the left hand to turn the engine.

Re: Something to turn the crankshaft to adjust the valves [Re: wokri] #1342188 Tue Jan 14 2020 09:08 PM
Joined: Sep 2011
Posts: 563
B
BC59 Offline
Shop Shark
You can also put a socket & ratchet on the generator (or alternator) drive nut, easier if you remove the spark plugs.


BC
1960 Chevy C10 driver
1949 GMC 250 project in waiting
G.M dealer tech since 1980 & counting
Re: Something to turn the crankshaft to adjust the valves [Re: wokri] #1342189 Tue Jan 14 2020 09:14 PM
Joined: Feb 2013
Posts: 389
5
53 green 1- ton Offline
Shop Shark
The way I did mine, was to first pull the plugs. Why fight compression!
Then I used a 1” drive on a breaker bar to rotate the harmonic balancer in where the hand crank would go.
Jim


Jim Schmidt.
Bucks County, Pa.
1953 3800
Pix in Photobucket
Re: Something to turn the crankshaft to adjust the valves [Re: wokri] #1342313 Wed Jan 15 2020 03:59 PM
Joined: Feb 2004
Posts: 19,465
H
Hotrod Lincoln Offline
Boltergeist
If you've got room in your shop to roll the wheels 1/2 turn, just put the transmission in high gear, remove the spark plugs, and gently roll the vehicle forward as you adjust the valves. With a little practice watching the rocker arms move, you can adjust all the valve clearances accurately with two turns of the engine.
Jerry


The murder victim was drowned in a bathtub full of Rice Krispies and milk.
The coroner blamed the crime on a cereal killer!

Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
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