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LM clutch cable too long ?
Posted by: charlesc ()
Date: January 10, 2019 08:36PM

Am converting 1965 cnvt. from PG to manual. Using 66-69 Saginaw transaxle. Everything is now installed. Problem is can't adj. slack out of clutch cable. End of cable hits front of trans. so don't see how any adj of clutch rod or cable swivel or problem with clutch assmy. can solve. Seems like a problem with routing or pedal assmy. Don't see any options for routing. Cable runs through pulley directly to arm on pedal shaft. Didn't think there were different LM pedals that could cause this issue. Did install cable pulley and cable is passing through pulley. Also all LM cables are same except end on 69? Could I have a wrong cable?

Unfortunately I did not have a complete parts car so am using parts from various sources accumulated over a long period, so wrong parts is a possibility.

Could just cut and rethread cable, but rather find real problem.

Charles













did

Re: LM clutch cable too long ?
Posted by: TerribleTed ()
Date: January 10, 2019 09:03PM

Are you sure that the metal arm that the clutch pedal attaches to is not bent or twisted out of position (maybe rewelded in the wrong orientation)? I have seen a number of these failed , the flat bar that connects the cable comes loose at the rod which connects to the pedal, causing lack of movement. I have seen these welded back into place still twisted. Other than that, are all the correct parts installed (eg. is the pulley the correct one)? Do you have the correct cable? Is it the correct length? Is the clutch pivot at the rear of the car adjusted correctly...the cable is adjusted so that the lever that connects the main clutch actuating rod nearly hits the trans crossmember. The rod is then adjusted after the cable. Rechecking adjustments step by step from the shop manual would be a good place to start.

---------------------------------------------------------------------------------------------------------

Avid Corvair hobbiest since 1984.
I have personally performed ground up restoration on over 20 Corvairs.
I currently work full time at restoring and repairing Corvairs.
Located in the Atlanta Georgia area.
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Edited 1 time(s). Last edit at 01/10/2019 09:06PM by TerribleTed.

Re: LM clutch cable too long ?
Posted by: Frank DuVal ()
Date: January 10, 2019 09:24PM

65/66 is one clutch/brake pedal assembly. 67/8/9 is another clutch brake pedal assembly.

You need the common 65/66 assembly.

I do not know why people buy the wrong car. But, I am jaded, as I lost a 69 pedal assembly out of a parts 69 2 door to loan to a friend who was doing a swap for a customer on a 67 PG to 4 speed swap one weekend and the car owner supplied the wrong pedal assembly. For my friend to get the job finished he needed the right pedal assembly. Of course all I got was excuses as to why the car owner was responsible to replace or pay for my 69 pedal assembly, someone I did not know, never met, had no contact information. Second time I got taken by saying "just get me a replacement" instead of cash. Learned lesson, no more loaning parts!angry smiley

Picture here:

[corvaircenter.com]

Frank DuVal

Fredericksburg, VA



Edited 1 time(s). Last edit at 01/10/2019 09:30PM by Frank DuVal.

Re: LM clutch cable too long ?
Posted by: vairmech ()
Date: January 11, 2019 04:28AM

Did you use the white plastic pulley for the clutch cable in the tunnel? The black one is too small of diameter. What about the correct bolt and spacer for the pulley?

That all makes a difference for lengths.

Ken Hand
Handy Car Care
248 613 8586

Vairmech@aol.com



Edited 1 time(s). Last edit at 01/11/2019 04:29AM by vairmech.

Re: LM clutch cable too long ?
Posted by: larry202br ()
Date: January 11, 2019 04:32AM

Is that arm to the left of the 65/66 assy part of the parking brake assembly? If so, does the 67/8/9 not have that arm, but a different style of parking brake arm?

1961 rampside with a 65 / 67 110 engine, car four speed.
1965 convertible
1966 Custom two door/four door

KC0SKX
Olathe, ks
HACOA

Re: LM clutch cable too long ?
Posted by: charlesc ()
Date: January 11, 2019 07:44AM

I have the white clutch pulley mounted next to the black park brake pulley with the metal bushing. It is larger than the black park brake pulley and looks same as another one I have. The cable extends about an inch beyond the front of the transmission and cross piece hits trans so no help to adjust clutch rod.
Think the pedal assmy. is the correct one. Understand the 67 -69 was different to accommodate a different steering column. Reused the park brake mount and just installed the pedal shaft with manual clutch and brake pedal. Didn't notice any reweld to the arm but will look again.

Does anyone know what the length of the cable is supposed to be?

Thanks for the input.

Re: LM clutch cable too long ?
Posted by: charlesc ()
Date: January 11, 2019 08:07AM

I note the 66-69 Saginaw is longer than the 65 trans and requires a shorter shift shaft coupler so a shorter clutch cable would seem possible. However the parts book shows same number for 65-68 cable. 66 assembly manual shows same number and vendors sell one cable for 65-69. Also cable attaches to the cross shaft not trans so should be same length 65-68.

Re: LM clutch cable too long ?
Posted by: steve c goodman ()
Date: January 11, 2019 08:34AM

Charles I have found GM cables occasionally
through the years that will touch the end of
the 66-9 trans. I have always chalked it up
to a 'long-short' nominal dimension with the
manufacturer. I have always just trimmed the
end of the rod and added a few turns of a
1/4x20 die to the threads if necessary.

Also placement of the powertrain can vary;
the position of trans mounting points etc.
That is why the two holes in the rear mount
bracket are slotted.

I just measured two GM cables one is:

82 9/16" from end of rod to center of ball
82 7/8" from end of rod to center of ball

that is 5/16" difference

best wishes, Steve
Rear Engine Spec. Inc. Golden, Colo.

1962 spyder 3.0L turbo---1965 Crown V8
1967 monza 110/4---1968 monza 110/4
1971 amante gt 110/4
CORSA/RMC/PPCC

Re: LM clutch cable too long ?
Posted by: joelsplace ()
Date: January 11, 2019 01:20PM

I have had to weld the arm back on the pivot shaft before. My '64 was very poorly welded and broke off when I tried to bend it a little to align the cable better.

Re: LM clutch cable too long ?
Posted by: steve c goodman ()
Date: January 11, 2019 02:36PM

joelsplace Wrote:
-------------------------------------------------------
> I have had to weld the arm back on the pivot shaft
> before. My '64 was very poorly welded and broke
> off when I tried to bend it a little to align the
> cable better.

Steve sez: 64 and earlier is quite a bit different
from 65-9. Nothing on early would apply here.

best wishes, Steve
Rear Engine Spec. Inc. Golden, Colo.

1962 spyder 3.0L turbo---1965 Crown V8
1967 monza 110/4---1968 monza 110/4
1971 amante gt 110/4
CORSA/RMC/PPCC

Re: LM clutch cable too long ?
Posted by: charlesc ()
Date: January 11, 2019 07:32PM

Thanks to all for comments. Everything seemed to check out so took Steve's advice

and shortened the cable all looks ok now will see how it works.

Re: LM clutch cable too long ?
Posted by: joelsplace ()
Date: January 11, 2019 08:06PM

I understand they are different but if the arm breaks off and has to be welded back on that is the same area of error.

Re: LM clutch cable too long ?
Posted by: davemotohead ()
Date: January 11, 2019 08:17PM

Are you talking about this? I changed a 65 to 66 trans axle and had to trim the Threaded rod end as well so it would clear.





Email me at: Dave Motohead

1960 4dr sedan caveman car
1961 Rampside (Chetside)
1962 Rampside (Barnside)
1962 Short Rampside (Shortside)
1962 Monza 700 Wagon
1963 Monza 900 coup (General Nader)

-----------------------------------
Rust Free Lancaster Ca



Edited 1 time(s). Last edit at 01/11/2019 08:18PM by davemotohead.

Attachments:
Re: LM clutch cable too long ?
Posted by: v8vair ()
Date: January 12, 2019 08:45PM

I’ve had to trim the threaded part of the cable many times. A streached and trimmed original GM cable is much better than a repop.

Re: LM clutch cable too long ?
Posted by: charlesc ()
Date: January 15, 2019 08:11PM

That is the issue I have. Cut threads so now fits.

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