Circlip placement on HK1 Transmission

zack_novak

Member
Can someone tell me if there is a circlip that goes on the left shaft (one with the screwdriver pointed at it)? The shaft has a recess in it like where they normally go, but the diagram does not show one.

I can only find one, and it gets installed later with the clutch.

Also, while everybody's looking at it, does it appear to be correctly assembled? Everything is installed as the Clymer manual says, just not sure if I misses anything.

Lastly- anybody know a good test to see if everything is properly installed? Manual said something about rotating the clutch and shifting through the gears, but I couldnt figure it out.

Thanks,

Zack
 

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kirrbby

Well-Known Member
No circlip but a thrust washer goes there. Very thin little flat washer. They will often stick to the case when you take the motor apart. Check inside your right side case, or in the parts washer. It's best to replace it with a new one as they are a wear part.
 

cjpayne

Well-Known Member
No circlip but a thrust washer goes there. Very thin little flat washer. They will often stick to the case when you take the motor apart. Check inside your right side case, or in the parts washer. It's best to replace it with a new one as they are a wear part.
'72CT70H Tranny.gifCT70H Tranny.jpg
I think he's right. From what I see, it looks like something is missing. Hope this helps.
 

ctbale

Member
been a year since I did mine, but check the online illustrated parts diagram for the kicker too, I think there in one there before you set the LH case on. I use the parts diagrams as much or more then the Maint Manual.
 

ctbale

Member
been a year since I did mine, but check the online illustrated parts diagram for the kicker too, I think there in one there before you set the LH case on. I use the parts diagrams as much or more then the Maint Manual.
 

theraymondguy

Well-Known Member
It appears to be assembled correctly, minus the missing thrust washer. I would suspect that the 'ring' on the countershaft is from the bearing in the rhs case. The trans is 'drooping' possibly due to the wear on the shift forks or loose bolt in the bottom of the shift drum. The droop is 'normal' for 40 year old parts (my sl70 trans suffered from the same thing), push up on the shift drum, the height of the top gear on the countershaft (4th) should move to flush with the splines. If it doesn't new shift forks are pricey but recommended. Spend some time looking in the area where they ride - the hardness on the fork and gear disappears like butter in August heat.

Coat all the trans parts in a bit of oil, rotate the shift drum all the way to the left, that's first gear. You may have to rotate the trans to get it to roll over smoothly. Now locate neutral, (counter shaft will rotate freely of main shaft - closest to the crank). Install the missing thrust washer, case gasket and rhs case (temporarily if you choose) Install the shift lever, shift detent and associated bits. While rotating the trans you can shift the trans, should roll through fairly nice. It may hang occassionally but don't panic, it's normal.
 
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bc17a

Well-Known Member
The trans is 'drooping' possibly due to the wear on the shift forks or loose bolt in the bottom of the shift drum. The droop is 'normal' for 40 year old parts

This one will have to be explained. I'm not sure any wear is apparent in the photos. If you're talking about 3rd and 4th gears position on the countershaft, the drum/forks do not move these gears. That said, it does appear they are not spaced properly. I suspect the shim washer (#14 in the illustration) below 3rd is not installed.
 

zack_novak

Member
This one will have to be explained. I'm not sure any wear is apparent in the photos. If you're talking about 3rd and 4th gears position on the countershaft, the drum/forks do not move these gears. That said, it does appear they are not spaced properly. I suspect the shim washer (#14 in the illustration) below 3rd is not installed.

The one between #7 and #15?

The shift forks were replaced. Not new, but good condition used ones.
 

theraymondguy

Well-Known Member
This one will have to be explained. I'm not sure any wear is apparent in the photos. If you're talking about 3rd and 4th gears position on the countershaft, the drum/forks do not move these gears. That said, it does appear they are not spaced properly. I suspect the shim washer (#14 in the illustration) below 3rd is not installed.


BC17 is a sharp cookie and caught the mistake. It's been several months since I tinkered with my trans and some of the details have clearly fallen through the cracks. :40:

The shift drum can lean towards the shift forks due to wear on the boss in the case or the bottom of the drum. You will notice when you go to put the cases together that the shift drum may need to be moved toward the top of the cases to get it to line up with the opening in the rhs case. This movement will also alter the position of #3 gear on the countershaft (as well as #2 on the main). It did make some difference on #4 countershaft on my trans as I recall - but having said that it may have been due to misalignment of the dowels between 3 & 4. I believe I eventually corrected the spacing issues by replacing the clips and washers between. However, after all of that I found 3rd to be cooked anyways. The lifan trans at dratv.com is dirt cheap and solves all these problems.

4_SPEED_TRANNY GEAR/SHAFT_SET

Lots of guys are switching over to it due to AHP's recent issues.
 
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