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Transmission High Gear Bushing #704003
08/05/17 12:35 am
08/05/17 12:35 am
Joined: Aug 2001
Posts: 138
SoCal
P
Phil R Offline OP
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Phil R  Offline OP
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Joined: Aug 2001
Posts: 138
SoCal
While inspecting the high gear assembly on a 1970 TBolt I noticed that the bushing appeared cracked on the outer portion.
I pulled out another from a parts box & found it to be cracked as well.
After researching the problem I discovered that this bushing is of the split variety and that replacements are actually available, if needed.
But a new question arose when I discovered that the two bushings differed greatly in the distance that they extended from the end of the assembly (see photo).
Is there a prescribed amount for this distance or is it set up for each individual transmission? Any insights appreciated.

Phil

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Re: Transmission High Gear Bushing [Re: Phil R] #704004
08/05/17 12:39 am
08/05/17 12:39 am
Joined: Aug 2001
Posts: 138
SoCal
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Phil R Offline OP
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Phil R  Offline OP
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SoCal
Sorry, looks like there are still some things I don't understand about "Attachment Manager" !

Re: Transmission High Gear Bushing [Re: Phil R] #704023
08/05/17 8:13 am
08/05/17 8:13 am
Joined: Sep 2008
Posts: 727
angeles city, rp
J
jaycee Offline
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jaycee  Offline
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Posts: 727
angeles city, rp
if it helps any the one on the right looks correct. its possible the one on the left could have broken off as a groove gets worn there from the seal thats in the plate behind the clutch basket. i replaced a set of bushes in a '65 tears ago but ill be damned if i can remember what the spacing was. I WANT TO SAY (but not sure) that those bushes, and there two, press in til they but up to each other and the result is the correct protrusion. i DO remember they required a light reaming afterwords.

Re: Transmission High Gear Bushing [Re: Phil R] #704030
08/05/17 10:21 am
08/05/17 10:21 am
Joined: Aug 2001
Posts: 3,918
argyll. scotland, uk
gavin eisler Online content
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gavin eisler  Online Content
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argyll. scotland, uk
The bush needs to extend enough so that the oil seal in the primary case has something to run on, not critical , just long enough and a wee bit more.
When I replaced these bushes I had to ream them to get a running fit, used an expanding reamer.


71 Devimead A65 750
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The poster formerly known as Pod
Re: Transmission High Gear Bushing [Re: gavin eisler] #704090
08/06/17 3:14 am
08/06/17 3:14 am
Joined: Aug 2001
Posts: 138
SoCal
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Phil R Offline OP
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Phil R  Offline OP
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Jaycee, Gavin, Thanks for the input, that's just the information I was hoping to find.
Much appreciated!

Phil

Re: Transmission High Gear Bushing [Re: Phil R] #704096
08/06/17 7:34 am
08/06/17 7:34 am
Joined: May 2013
Posts: 4,847
Rotherham - S. Yorkshire
Allan Gill Offline

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Allan Gill  Offline

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Joined: May 2013
Posts: 4,847
Rotherham - S. Yorkshire
Interesting, out of the 3 boxes I have the high gear bushes do not touch in the centre. Unless it's seriously worn I wouldn't bother.


beerchug
Re: Transmission High Gear Bushing [Re: Allan Gill] #704134
08/06/17 4:10 pm
08/06/17 4:10 pm
Joined: Aug 2001
Posts: 138
SoCal
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Phil R Offline OP
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Phil R  Offline OP
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SoCal

[quote= Unless it's seriously worn I wouldn't bother. [/quote]

I think we're both on the same page Allan.

Thanks

Phil

Re: Transmission High Gear Bushing [Re: Phil R] #704162
08/06/17 10:14 pm
08/06/17 10:14 pm
Joined: May 2013
Posts: 4,847
Rotherham - S. Yorkshire
Allan Gill Offline

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Allan Gill  Offline

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Joined: May 2013
Posts: 4,847
Rotherham - S. Yorkshire
bigt if the gap is big enough to leak a highly viscous gearbox oil then it is goosed


beerchug
Re: Transmission High Gear Bushing [Re: Phil R] #704229
08/07/17 4:16 pm
08/07/17 4:16 pm
Joined: Jan 2004
Posts: 3,727
ca, us
D
DMadigan Offline
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DMadigan  Offline
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Posts: 3,727
ca, us
The high gear bush sticks out about 0.350" from the gear and no, the two do not meet in the centre.

Re: Transmission High Gear Bushing [Re: DMadigan] #704396
08/09/17 5:59 am
08/09/17 5:59 am
Joined: Aug 2001
Posts: 138
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Phil R Offline OP
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Phil R  Offline OP
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Roger that info Dave, thanks much.
Neither of the two I have meet up in the center. If need be, I plan to adjust the gap just slightly so that the seal will run on an un-worn surface of the bush.

Phil


Moderated by  Allan Gill, Jon W. Whitley 


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