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Re: [GMCnet] lower steering shaft complete new replacement [message #266806 is a reply to message #266594]

Wed, 26 November 2014 14:52

Messages: 1262
Registered: September 2009

Karma:

Senior Member

Just as a related side note, I was studying Don Wirth's excellent article about the steering box:
http://www.gmceast.com/technical/Wirth_GMCMH_Steering_Box.pdf

In it, he asserts that our steering box has a 3/4" 24-spline shaft. (I assume he meant 3/4"-30, with 6 missing for the flat).
This confused me, so I double checked ours, which for sure is a 13/16"-36 spline shaft, just like Jim Fawcett found with his.

Don's test for checking the size is correct: a 3/4" 12-point socket WILL fit on a 13/16"-36 splined shaft just fine.
To test for a 3/4" shaft, you actually need (I think) an 11/16" socket because the teeth of the socket fit into the
grooves of the spline, which is a smaller diameter circle. The 3/4" boxes are more common since the 13/16" size was only
used up until about 1977.

At any rate, if you went to a junkyard armed with Don's suggestion on checking shaft sizes using a 3/4" 12-point socket, you'd be fine.
However, if you just ordered a steering box with a 3/4" shaft based on his article, you'd never be able to get your OEM steering pinch bolt
tightened correctly on the steering shaft. Made me wonder if there might be a few GMC's out there with wrong size steering boxes,
and also if any 1978 coaches were equipped with the later sized boxes.

Karen
1975 26'

USAussie wrote on Sun, 23 November 2014 17:55

Keith,
From research I've done on the steering box and discussions I've had with Dave Lenzi I am of the OPINION that any amount the
steering box is off center is going to cause steering wander.

While I'm down in Adelaide working with Peter Bailey I'll see if we can figger out how to determine how many degrees it takes for
the steering to get sloppy.

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[Message index]

		[GMCnet] lower steering shaft complete new replacement By: KB on Sun, 02 November 2014 17:45
		Re: [GMCnet] lower steering shaft complete new replacement By: Ken Henderson on Sun, 02 November 2014 18:52
		Re: [GMCnet] lower steering shaft complete new replacement By: KB on Sun, 02 November 2014 19:53
		Re: [GMCnet] lower steering shaft complete new replacement By: midlf on Sun, 02 November 2014 20:23
		Re: [GMCnet] lower steering shaft complete new replacement By: USAussie on Sun, 02 November 2014 21:27
		Re: [GMCnet] lower steering shaft complete new replacement By: kerry pinkerton on Sun, 02 November 2014 20:20
		Re: [GMCnet] lower steering shaft complete new replacement By: USAussie on Sun, 02 November 2014 21:32
		Re: [GMCnet] lower steering shaft complete new replacement By: kerry pinkerton on Sun, 02 November 2014 22:09
		Re: [GMCnet] lower steering shaft complete new replacement By: Ken Henderson on Sun, 02 November 2014 23:06
		Re: [GMCnet] lower steering shaft complete new replacement By: Ken Burton on Sun, 02 November 2014 21:37
		Re: [GMCnet] lower steering shaft complete new replacement By: kerry pinkerton on Sun, 02 November 2014 22:04
		Re: [GMCnet] lower steering shaft complete new replacement By: Ken Burton on Mon, 03 November 2014 01:04
		Re: [GMCnet] lower steering shaft complete new replacement By: kerry pinkerton on Mon, 03 November 2014 08:11
		Re: [GMCnet] lower steering shaft complete new replacement By: Keith V on Mon, 03 November 2014 10:46
		Re: [GMCnet] lower steering shaft complete new replacement By: midlf on Mon, 03 November 2014 12:12
		Re: [GMCnet] lower steering shaft complete new replacement By: USAussie on Mon, 03 November 2014 14:40
		Re: [GMCnet] lower steering shaft complete new replacement By: KB on Mon, 03 November 2014 19:27
		Re: [GMCnet] lower steering shaft complete new replacement By: USAussie on Tue, 04 November 2014 00:31
		Re: [GMCnet] lower steering shaft complete new replacement By: Jim at the Co-op on Tue, 04 November 2014 06:26
		Re: [GMCnet] lower steering shaft complete new replacement By: KB on Tue, 04 November 2014 11:41
		Re: [GMCnet] lower steering shaft complete new replacement By: USAussie on Tue, 04 November 2014 13:49
		Re: [GMCnet] lower steering shaft complete new replacement By: kerry pinkerton on Mon, 03 November 2014 13:10
		Re: [GMCnet] lower steering shaft complete new replacement By: KB on Mon, 03 November 2014 13:57
		Re: [GMCnet] lower steering shaft complete new replacement By: Keith V on Mon, 03 November 2014 16:11
		Re: [GMCnet] lower steering shaft complete new replacement By: KB on Mon, 03 November 2014 18:29
		Re: [GMCnet] lower steering shaft complete new replacement By: Ken Burton on Mon, 03 November 2014 20:59
		Re: [GMCnet] lower steering shaft complete new replacement By: bdub on Tue, 04 November 2014 11:04
		Re: [GMCnet] lower steering shaft complete new replacement By: USAussie on Tue, 04 November 2014 12:26
		Re: [GMCnet] lower steering shaft complete new replacement By: KB on Tue, 04 November 2014 15:55
		Re: [GMCnet] lower steering shaft complete new replacement By: KB on Tue, 04 November 2014 16:56
		Re: [GMCnet] lower steering shaft complete new replacement By: Jim at the Co-op on Thu, 06 November 2014 07:53
		Re: [GMCnet] lower steering shaft complete new replacement By: KB on Thu, 06 November 2014 12:59
		Re: [GMCnet] lower steering shaft complete new replacement By: KB on Thu, 06 November 2014 12:37
		Re: [GMCnet] lower steering shaft complete new replacement By: Jim at the Co-op on Thu, 06 November 2014 13:05
		Re: [GMCnet] lower steering shaft complete new replacement By: KB on Sat, 22 November 2014 15:02
		Re: [GMCnet] lower steering shaft complete new replacement By: USAussie on Sat, 22 November 2014 15:52
		Re: [GMCnet] lower steering shaft complete new replacement By: KB on Sat, 22 November 2014 17:25
		Re: [GMCnet] lower steering shaft complete new replacement By: USAussie on Sat, 22 November 2014 18:35
		Re: [GMCnet] lower steering shaft complete new replacement By: Keith V on Sat, 22 November 2014 20:30
		Re: [GMCnet] lower steering shaft complete new replacement By: Keith V on Sat, 22 November 2014 20:35
		Re: [GMCnet] lower steering shaft complete new replacement By: USAussie on Sat, 22 November 2014 21:52
		Re: [GMCnet] lower steering shaft complete new replacement By: Keith V on Sun, 23 November 2014 13:44
		Re: [GMCnet] lower steering shaft complete new replacement By: USAussie on Sun, 23 November 2014 19:55
		Re: [GMCnet] lower steering shaft complete new replacement By: KB on Wed, 26 November 2014 14:52
		Re: [GMCnet] lower steering shaft complete new replacement By: USAussie on Wed, 26 November 2014 16:20
		Re: [GMCnet] lower steering shaft complete new replacement By: USAussie on Wed, 26 November 2014 19:53
		Re: [GMCnet] lower steering shaft complete new replacement By: KB on Wed, 26 November 2014 14:32
		Re: [GMCnet] lower steering shaft complete new replacement By: Mr ERFisher on Sat, 22 November 2014 17:13
		Re: [GMCnet] lower steering shaft complete new replacement By: RicksGMC on Mon, 03 November 2014 07:23
		Re: [GMCnet] lower steering shaft complete new replacement By: bdub on Mon, 03 November 2014 11:58
		Re: [GMCnet] lower steering shaft complete new replacement By: KB on Mon, 03 November 2014 12:32
		Re: [GMCnet] lower steering shaft complete new replacement By: kerry pinkerton on Thu, 06 November 2014 13:04
		Re: [GMCnet] lower steering shaft complete new replacement By: KB on Thu, 06 November 2014 15:03
		Re: [GMCnet] lower steering shaft complete new replacement By: USAussie on Thu, 06 November 2014 15:08
		Re: [GMCnet] lower steering shaft complete new replacement By: KB on Thu, 06 November 2014 15:54
		Re: [GMCnet] lower steering shaft complete new replacement By: USAussie on Thu, 06 November 2014 16:56
		Re: [GMCnet] lower steering shaft complete new replacement By: USAussie on Thu, 06 November 2014 17:05
		Re: [GMCnet] lower steering shaft complete new replacement By: KB on Thu, 06 November 2014 19:22
		Re: [GMCnet] lower steering shaft complete new replacement By: kerry pinkerton on Fri, 07 November 2014 10:48
		Re: [GMCnet] lower steering shaft complete new replacement By: winter on Sat, 08 November 2014 08:32
		Re: [GMCnet] lower steering shaft complete new replacement By: Keith V on Fri, 07 November 2014 09:42
		Re: [GMCnet] lower steering shaft complete new replacement By: KB on Fri, 07 November 2014 12:34
		Re: [GMCnet] lower steering shaft complete new replacement By: USAussie on Fri, 07 November 2014 15:16
		Re: [GMCnet] lower steering shaft complete new replacement By: Bullitthead on Sat, 15 November 2014 22:18
		Re: [GMCnet] lower steering shaft complete new replacement By: kerry pinkerton on Fri, 07 November 2014 16:56
		Re: [GMCnet] lower steering shaft complete new replacement By: Ken Henderson on Sat, 08 November 2014 23:48
		Re: [GMCnet] lower steering shaft complete new replacement By: JohnL455 on Sat, 08 November 2014 08:49
		Re: [GMCnet] lower steering shaft complete new replacement By: Ken Burton on Sat, 08 November 2014 10:30
		Re: [GMCnet] lower steering shaft complete new replacement By: Ken Burton on Sun, 09 November 2014 07:22
		Re: [GMCnet] lower steering shaft complete new replacement By: KB on Sat, 08 November 2014 13:37
		Re: [GMCnet] lower steering shaft complete new replacement By: USAussie on Sat, 08 November 2014 14:05
		Re: [GMCnet] lower steering shaft complete new replacement By: KB on Sat, 08 November 2014 16:15
		Re: [GMCnet] lower steering shaft complete new replacement By: Matt Colie on Sat, 08 November 2014 16:54
		Re: [GMCnet] lower steering shaft complete new replacement By: USAussie on Sat, 08 November 2014 17:36
		Re: [GMCnet] lower steering shaft complete new replacement By: Ken Henderson on Sat, 08 November 2014 20:37
		Re: [GMCnet] lower steering shaft complete new replacement By: USAussie on Tue, 11 November 2014 18:36
		Re: [GMCnet] lower steering shaft complete new replacement By: Keith V on Sat, 08 November 2014 23:25
		Re: [GMCnet] lower steering shaft complete new replacement By: Ken Burton on Sun, 09 November 2014 07:47
		Re: [GMCnet] lower steering shaft complete new replacement By: KB on Sun, 09 November 2014 11:20
		Re: [GMCnet] lower steering shaft complete new replacement By: Ken Burton on Sun, 09 November 2014 11:34
		Re: [GMCnet] lower steering shaft complete new replacement By: KB on Sun, 09 November 2014 12:05
		Re: [GMCnet] lower steering shaft complete new replacement By: KB on Sun, 09 November 2014 13:50
		Re: [GMCnet] lower steering shaft complete new replacement By: Keith V on Mon, 10 November 2014 10:58
		Re: [GMCnet] lower steering shaft complete new replacement By: Keith V on Mon, 10 November 2014 11:00
		Re: [GMCnet] lower steering shaft complete new replacement By: USAussie on Mon, 10 November 2014 16:12
		Re: [GMCnet] lower steering shaft complete new replacement By: KB on Sat, 15 November 2014 16:39
		Re: [GMCnet] lower steering shaft complete new replacement By: kerry pinkerton on Sat, 22 November 2014 17:12
		Re: [GMCnet] lower steering shaft complete new replacement By: KB on Sat, 22 November 2014 17:47
		Re: [GMCnet] lower steering shaft complete new replacement By: kerry pinkerton on Sat, 22 November 2014 18:23
		Re: [GMCnet] lower steering shaft complete new replacement By: KB on Thu, 18 December 2014 15:43
		Re: [GMCnet] lower steering shaft complete new replacement By: A Hamilto on Fri, 03 July 2015 11:36
		Re: [GMCnet] lower steering shaft complete new replacement By: KB on Fri, 03 July 2015 12:05
		Re: [GMCnet] lower steering shaft complete new replacement By: A Hamilto on Fri, 03 July 2015 12:07
		Re: [GMCnet] lower steering shaft complete new replacement By: Hal StClair on Fri, 03 July 2015 13:33
		Re: [GMCnet] lower steering shaft complete new replacement By: KB on Sun, 02 October 2016 11:44
		Re: [GMCnet] lower steering shaft complete new replacement By: USAussie on Sun, 02 October 2016 16:52
		Re: [GMCnet] lower steering shaft complete new replacement By: Hal StClair on Sun, 02 October 2016 22:19
		Re: [GMCnet] lower steering shaft complete new replacement By: KB on Mon, 03 October 2016 11:06
		Re: [GMCnet] lower steering shaft complete new replacement By: USAussie on Tue, 04 October 2016 08:29
		Re: [GMCnet] lower steering shaft complete new replacement By: KB on Wed, 05 October 2016 12:21
		Re: [GMCnet] lower steering shaft complete new replacement By: USAussie on Wed, 05 October 2016 21:06
		Re: [GMCnet] lower steering shaft complete new replacement By: <rallymaster on Sat, 22 November 2014 22:50
		Re: [GMCnet] lower steering shaft complete new replacement By: kerry pinkerton on Sun, 23 November 2014 06:41
		Re: [GMCnet] lower steering shaft complete new replacement By: USAussie on Sun, 23 November 2014 17:09
		Re: [GMCnet] lower steering shaft complete new replacement By: kerry pinkerton on Fri, 03 July 2015 07:11
		Re: [GMCnet] lower steering shaft complete new replacement By: KB on Fri, 03 July 2015 12:00
		Re: [GMCnet] lower steering shaft complete new replacement By: JR Williams on Sat, 05 October 2019 01:19
		Re: [GMCnet] lower steering shaft complete new replacement By: Silvernort on Sat, 05 October 2019 08:04
		Re: [GMCnet] lower steering shaft complete new replacement By: Norisan on Sat, 05 October 2019 11:03
		Re: [GMCnet] lower steering shaft complete new replacement By: Neil Roach on Sat, 05 October 2019 13:36
		Re: [GMCnet] lower steering shaft complete new replacement By: JR Williams on Wed, 09 October 2019 17:27
		Re: [GMCnet] lower steering shaft complete new replacement By: Justin Brady on Thu, 10 October 2019 09:13
		Re: [GMCnet] lower steering shaft complete new replacement By: MikeB on Thu, 10 October 2019 10:29
		Re: [GMCnet] lower steering shaft complete new replacement By: Bill Van Vlack on Thu, 10 October 2019 16:09
		Re: [GMCnet] lower steering shaft complete new replacement By: Hal StClair on Fri, 11 October 2019 20:46

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