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Truck is neutralling and hard shifting out of second.

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Bayer-Z28

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I just had the truck out for a half hour or so. Get the cold weather settings dialed in (for now.)

Seems like when I land off a smaller jump or come to a stop, the truck neutrals and takes a sec for it to kick back. If I hit the brakes when it's moving (N) it will kick it back. Is this the trans or the clutches not returning? I don't like it screaming like that when it neutrals, I don't want to pop the little guy.

It also seems that it doesn't downshift easy and it seems like I have to come to a complete stop, or jab the brakes for it to downshift while I'm moving slower than second. It will bog at times once it hits second, unless I'm really moving with it. Can I throw an XL 3 speed in this? Seems like the same trans case. I know of the shift settings for the trans, but what about the downshifting??
 
How old is it? Might just be that your two speed OWB is gummed up and needs cleaned/lubed. Seems to have been going around lately, but more so with the 3-speed transmissions in the newer rigs.
 
I'll have to look up this "OWB" you speak of. If they're problematic on the new ones I'll wait till I can see a fix for it before I decide on a swap. No idea how old the truck is. I think I'm the third owner. Just tryin to fix some of the crap that the past owners messed up. I take good care of my vehicles, and this is no exception.

-=EDIT=-

Oh.. It's a sprag clutch, basically..
 
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Never heard that term before.

OWB=one way bearing

Locks onto the shaft in one direction, rolls in the other. Most (if not all) multi speed transmissions run one on the lower gear(s).
 
^ Oh ok.. Yeah, it's basically a small sprag clutch, and prolly less complicated..

Wait, you were talking abotu that bearing for the starting system in the other thread.. How would that affect my truck suddenly going out of gear and screaming from no load?
 
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I'm gonna take the engine out later an check the clutches also. Thanx bub.
 
Bayer-Z28 said:
^ Oh ok.. Yeah, it's basically a small sprag clutch, and prolly less complicated..

Wait, you were talking abotu that bearing for the starting system in the other thread.. How would that affect my truck suddenly going out of gear and screaming from no load?
Click to expand...

Bayer...yes, a one way bearing is technically a simple sprag clutch. The transmission has a OWB (sprag) in there that allows it to coast when you let off the throttle. For a three speed it is HPI item #86362. Oil and grease can make them slip than then you have the problem it sounds like you are describing. By the way not a lot of people know what one of those are...do you happen to be in the aircraft world for
work?http://www3.towerhobbies.com/cgi-bin/WTI0095P?FVSEARCH=86362&search=Go
 
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^ Nah.. just been a gear head for a long time.. :D Automatic transmissions use sprag clutches.
Was 6 year USAF CE Heavy Equipment Operator, tho. Been in love with aircraft for a while. Afghanistan Vet. Did airfield maintenance NCOIC for a short time. I've also got a micro chopper I like to fly around the house and torture the cats.. :hehe:

I still have this one in my tool box downstairs. Just think it's so neat. :) Off of my smoked 700R4 out of my 1985 Firebird.
perfor17.jpg
 
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Put some aluminum clutches in and it was fine for most of this afternoon. It only neutraled once, but it shouldn't be doing it at all. I'm swapping out to the lighter springs, gotta give it too much throttle for my liking. The plastic shoes wore a LOT in just four runs. Would slight moisture in the transmission cause the issue with the OWG/Sprag?

Spur question:

If you spin the spur in the free-wheel direction, should it keep spinning? there is no resistance at all going the other way. I'm expecting SOME, but I guess this could be from the gear mesh this time. -Had the engine out and all.
 
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Bayer-Z28 said:
Would slight moisture in the transmission cause the issue with the OWG/Sprag?
Spur question:
If you spin the spur in the free-wheel direction, should it keep spinning? there is no resistance at all going the other way. I'm expecting SOME, but I guess this could be from the gear mesh this time. -Had the engine out and all.
Click to expand...
Ok for the first question no it should not other that than it could cause corrosion. For the spur gear yes that is totally normal for it to do that. That is the OWB in the tranny working!!!
I am currently AF, an old crusty jet engine guy. Actually a good number of my friends are either CE or Seabeas. I am about to head back to A'Stan myself....fun stuff.
 
I don't know why it's neutralling then. Replaced the clutch shoes and it only did it once.

And thru the search here I found out that the ribbed pipe I have isn't that great. Well, mixed opinion on it, but still.


-=EDIT=-

Would water/moisture in my servo cause the idle to hang?? It did it upon first fire up today.
 
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It was the slipper.. Did it again today and the slipper loosened enough to slip.. Tightened it right back down. TIGHT.. Once it slips, it's done.

I also loosened the shift point to shift to second when I spin it by hand, then tightened it back down again to, coincidentally, a perfect shift point for my liking.
 

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