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post #1 of 11 (permalink) Old 09-12-2011, 09:31 PM Thread Starter
 
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Transmission Shifting Issue

I'm starting to see an issue with shifting the transmission in and out of reverse and forward once the trans gets up to temperature. Reverse is harder to get into that forward. Once it cools down, it shifts fine.

Anyone seen this? It's been getting worse over the past year.

And before you ask, yes, I have oil in the trans......10oz! I'm anal about keeping that level correct.

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post #2 of 11 (permalink) Old 09-12-2011, 11:08 PM
 
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Re: Transmission Shifting Issue

Cable maybe?
How does it shift with the cable disconnected?
Any side play in the shift shaft?
It is grinding going into gear or just difficult to move the shifter?

2009 Redline XL Turbo

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post #3 of 11 (permalink) Old 09-13-2011, 08:52 PM Thread Starter
 
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Re: Transmission Shifting Issue

Cable maybe?
Jay => Maybe, but for some reason I doubt it because it works fine when the rig is cool (not having been run). Not sure yet.

How does it shift with the cable disconnected?
Jay => Haven't tried it yet. I'll keep some tools handy next time I am out and start to experience the issue. I'll try it without the cable attached. I should have thought of that already.

Any side play in the shift shaft?
Jay => No. Shift shaft going into the trans is tight.

It is grinding going into gear or just difficult to move the shifter?
Jay => No more than normal. It has always ground a little from time to time when shifting into gear (forward or reverse).

It's acting like it's hitting something keeping it from engaging. When it stops moving, I can push the handle harder and it feels "spongey" which makes me think the cable is still working and putting more pressure just loads the push cable inside the sheath.

Once it gets hot/warmed, it seems easier to get it into forward than into reverse.

Usually something simple is the issue......so this might not be it....but I'm wondering if perhaps inside the trans there is a "fork" which is moved by the shift rod from the outside. This moves the main drive gear side to side and that gear is driven by another "fork" which rides on a 1/2" pin. Maybe that pin is getting worn and the shift "fork" is rocking slightly and binding at the extreme reach just before gear engagement. But before I get crazy..........I'll check the cable and shift it without the cable attached once it gets warm. Start simple first.

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post #4 of 11 (permalink) Old 09-14-2011, 12:14 AM
 
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Re: Transmission Shifting Issue

have you changed a belt lately poss belt too tight
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post #5 of 11 (permalink) Old 09-14-2011, 12:17 AM
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Re: Transmission Shifting Issue

Jay I have seen one personally that developed a little burr on the fork shaft with the detent and caused the fork to hang. It was near one of the detent valleys in the shaft. You ought to check it out if you can't see any other problems. Hope it helps. I have a few parts I have saved that might help you out if you find something wrong in the area that I have spoken of. I believe I have a couple shafts and forks if you cant massage it.

Mike

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post #6 of 11 (permalink) Old 09-14-2011, 12:20 AM
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Re: Transmission Shifting Issue

Quote:
Originally Posted by rzrvolt View Post
have you changed a belt lately poss belt too tight
Good point! Too much secondary clutch rotation?

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post #7 of 11 (permalink) Old 11-20-2011, 07:43 PM Thread Starter
 
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Re: Transmission Shifting Issue

Wanted to followup on this now that I have figured out my problem. Finally got sick of not being able to shift into reverse on a regular basis (like....it stopped going into reverse at all).

I pulled the transmission the other day and separated the case. I tried to cycle the shift sleeve/collar while holding the shaft in place. Going into reverse it would hang just trying to come out of the neutral detent. I pulled the shaft and shift collar out of the trans and popped the shift collar off of the shaft. BTW: Be careful when you do this because the detent ball inside the sliding sleeve will pop out and roll across the garage floor, almost never to be seen again. Ask me how I know!!!

Once I have the shift collar off, I noticed the shaft had some burrs/rough spot just above the last detent slot which would align perfectly with the top of the collar. It was rough to the touch on the shaft. And the sliding collar didn't have a good chamfer leading into it and had a couple of sharp places on the ID leading edge. I took a deburring tool and created a better chamfer on the leading edge. And took some 320 grit sand paper with oil and sanded the burr in the shaft and sanded the leading edge on the sliding collar. Put the two back together (without the detent ball in place) and could easily slide the collar and shaft. Before, it would hang and not want to move. Reassembled everything (this time including the detent ball and spring) and now.......problem solved!

I suspect this could be a common issue going forward as the material of the collar is a cast steel while the shaft is a polished steel. If the cast hasn't been finished well and has that sharp leading edge, it's going to scratch/burr the shaft and bind when trying to slide because the clearance between the two is tight.

I didn't take any pictures........sorry. But you guys will see exactly what I am talking about the first time you are in there and have to take yours apart for this reason or other reasons.

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post #8 of 11 (permalink) Old 11-21-2011, 08:35 AM
 
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Re: Transmission Shifting Issue

Just FYI. When I busted my trans the needle bearing was shattered and I had a real hard time getting it to shift into reverse. Something else to watch as well. If the needle bearings start too give up it lets the shift gear lean.



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post #9 of 11 (permalink) Old 11-21-2011, 10:56 AM Thread Starter
 
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Re: Transmission Shifting Issue

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Originally Posted by sandracer1 View Post
Just FYI. When I busted my trans the needle bearing was shattered and I had a real hard time getting it to shift into reverse. Something else to watch as well. If the needle bearings start too give up it lets the shift gear lean.
That bearing still seemed good as the shift gear didn't have any play in it. I found that when I pulled the shift collar and shaft out and took the detent ball and spring out, I couldn't hardly get the shift collar to move into the reverse position, even when out of the transmission (collar and shaft only assembled). It was VERY clear the issue was the burr.

But.......you never know what future issue hold for this trans. So I will definately keep in mind the needle bearing possibility in the future if it starts acting up again.

Thanks.

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post #10 of 11 (permalink) Old 11-21-2011, 01:01 PM
 
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Re: Transmission Shifting Issue

Just thought I would mention it for all that are reading this post. Thanks for posting what you found. I will sure keep it in mind when I pull mine down for inspection next time.



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