4-Speed Transmission Adjusting Kit for 1958-86 Big Twin

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51Hog
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4-Speed Transmission Adjusting Kit for 1958-86 Big Twin

#1

Post by 51Hog » Thu Feb 12, 2009 4:49 am

Any reason this won't work on a stock 51 Pan with -2 into 1 exhaust and a tank shift 4 speed?
It appears to be a great complement to a belt drive.
Dale
tranny adjuster.jpg
"This dual transmission adjuster was designed to aid in the accurate alignment and adjustment of the transmission mainshaft parallel to the engine sprocket shaft, when open belt drives or tin primaries are used. Transmission is held firmly in place by the four jam nuts. Fits all 1958-86 4-speed Big Twin (except Softail®)."
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Re: 4-Speed Transmission Adjusting Kit for 1958-86 Big Twin

#2

Post by RussW » Thu Feb 12, 2009 5:21 am

I used one once on my '61 with a belt drive. They work as described, but you'll find that the stock transmission mounting studs are not long enough to reach thru both the mounting plate and these adjusters. Only a few threads for the nut to catch. If you back the studs out enough to get the length you need, they will leak. Not insurmountable, but something to be aware of.

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Re: 4-Speed Transmission Adjusting Kit for 1958-86 Big Twin

#3

Post by 51Hog » Thu Feb 12, 2009 8:57 pm

Thanks for the response Russ.
I just wonder if the kit will somehow not work with my rigid frame and 4 speed tranny.
Dale

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Re: 4-Speed Transmission Adjusting Kit for 1958-86 Big Twin

#4

Post by RussW » Fri Feb 13, 2009 1:37 am

Well, from what I can see by looking at some catalogs, the front tranny mount plate bolt holes are spaced different early to late to match the frame tabs. (Front right side hole is more inboard). The stationary part of this bracket mounts to these front bolts, and actually pulls the tranny forward into adjustment by the two front case studs. Looks like you would have to redrill this part of the bracket to match your bolt holes. After that, should work, it's a pretty simple design. 'Course I've said that before about parts that should work together.....

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Re: 4-Speed Transmission Adjusting Kit for 1958-86 Big Twin

#5

Post by 51Hog » Fri Feb 13, 2009 2:02 am

Just the info I was looking for--Thanks.
I may just build one - I need to learn to Parkerize anyway. Don't want chrome.
Dale

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Re: 4-Speed Transmission Adjusting Kit for 1958-86 Big Twin

#6

Post by 03Roadking » Fri Feb 13, 2009 9:53 pm

Hello
I used that part for my pan. I have a 62 trans in a 56 frame I went looking in the knowledge base for my pictures from long ago but I guess they didn't make the change over.
What I did is, just as you see the picture you posted the piece that bows up I drilled two holes in it to match the bolts for the front mounting holes for the trans mounting plate, the straight piece goes under the trans plate to the front two trans studs and I can't remember if I had to drill new ones there or not but it works great for me and I am running a belt. It's takes a little getting use to the adjusting procedure but once you do it a few times it holds the trans in place while you tighten it down and it doesn't shift while your doing it. I have a disk around here somewhere with the pictures I took if I can find it I will post the pictures again

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Re: 4-Speed Transmission Adjusting Kit for 1958-86 Big Twin

#7

Post by 51Hog » Fri Feb 13, 2009 11:16 pm

Pics are great.
Thanks for the info.

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Re: 4-Speed Transmission Adjusting Kit for 1958-86 Big Twin

#8

Post by 51Hog » Mon Mar 23, 2009 1:22 am

Just finished installing an adjuster. The only modification needed was to re-locate the hole on the primary side of the adjuster (I did not weld up the other hole). Still have to pick up the 1/4 inch longer bolts for the front tranny plate to frame mounts. The studs in the transmission are long enough. Just 2 threads short of being flush with the end of the nuts.
A few Pics---
IMG_1608 [800x600].JPG
IMG_1609 [800x600].JPG
IMG_1611 [800x600].JPG
IMG_1612 [800x600].JPG
IMG_1616 [800x600].JPG
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Re: 4-Speed Transmission Adjusting Kit for 1958-86 Big Twin

#9

Post by 03Roadking » Mon Mar 23, 2009 1:56 am

51
Great pictures I was still trying to find the ones I took but you hit it right on like I said in my first post it works great

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Re: 4-Speed Transmission Adjusting Kit for 1958-86 Big Twin

#10

Post by RUBONE » Tue Mar 24, 2009 2:51 am

Seems like a lot of trouble to mount something backwards. Those adjusters are designed to be used on electric start setups that have been converted to open/belt. The electric start cases have no adjusters and the bracket mounts on the rear and bull back like the original H-D adjuster. They have no centering blocks on the case so need to pull from both sides to keep the gearbox centered. If you adapt one top an early setup ('64 and earlier) the original adjuster should be removed to make adjustment easy.
Robbie

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Re: 4-Speed Transmission Adjusting Kit for 1958-86 Big Twin

#11

Post by 51Hog » Tue Mar 24, 2009 3:33 am

Drilling a hole and changing two bolts is not a lot of work.
As you already know----The original adjuster only pushes/pulls on one side of the tranny and it twists it. Pretty tough to align my enclosed belt drive.

RUBONE wrote:Seems like a lot of trouble to mount something backwards. Those adjusters are designed to be used on electric start setups that have been converted to open/belt. The electric start cases have no adjusters and the bracket mounts on the rear and bull back like the original H-D adjuster. They have no centering blocks on the case so need to pull from both sides to keep the gearbox centered. If you adapt one top an early setup ('64 and earlier) the original adjuster should be removed to make adjustment easy.
Robbie

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Re: 4-Speed Transmission Adjusting Kit for 1958-86 Big Twin

#12

Post by PanPal » Tue Mar 24, 2009 4:03 pm

Dale, it's probably too late now, but I believe there are 2 different tranny plates. The bosses on the bottom of the tranny should fit snug in the cut outs on the plate. It is a big help keeping the transmission in line. It could be you have the narrow transmission bosses and the wide cut out tranny plate.

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Re: 4-Speed Transmission Adjusting Kit for 1958-86 Big Twin

#13

Post by 51Hog » Tue Mar 24, 2009 11:59 pm

PanPal wrote:Dale, it's probably too late now, but I believe there are 2 different tranny plates. The bosses on the bottom of the tranny should fit snug in the cut outs on the plate. It is a big help keeping the transmission in line. It could be you have the narrow transmission bosses and the wide cut out tranny plate.
I looked around and did not find any other style adjuster. Probably just did not look in the right places.
I checked out the tranny plate and tranny. The bosses are correct for the plate slots, just have a little too much slop to hold the tranny straight using the original single bolt adjuster.
There is about 1/16 to 3/32 " twist between the tranny and the plate with the mount bolts loose. That translates to a lot when trying to align a belt.

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Re: 4-Speed Transmission Adjusting Kit for 1958-86 Big Twin

#14

Post by Panacea » Wed Mar 25, 2009 1:07 am

Dale, will you be able to adjust the tranny fully forward? I even had to elongate the adjustment slots to get mine far enough forward for the belt drive on my 51. No way there would be enough room for that bracket in front of the case on mine...Mike

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Re: 4-Speed Transmission Adjusting Kit for 1958-86 Big Twin

#15

Post by 51Hog » Wed Mar 25, 2009 2:06 am

I am going to assume that mine will work, based on the fact that even though I removed the tranny from the plate, and the plate from the bike, I did not move the original adjusting bolt from where it last had the belt adjusted properly. When I re-installed the tranny and new adjuster. I am going to guess that through all that, the tranny is within 1/4 inch of where it was when running.
Either way---Not a problem---If I need to open up the holes, I can do it. Thanks for the heads up.

If you look at the first pic in this post, It appears that the adjuster will pull the tranny studs pretty close to the front of the slot.

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