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Stripped splines on input shaft to hydro gear

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Http://www.oscar-wilson.com/
Can look up and buy parts here for hydro gear

Posted on Mar 06, 2009

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Craftsman 917273482 will not shift into gear, and I can't push it because it won't disengage


If there is too much play in the drive belt due to belt stretch or linkage wear, the belt will be too loose to drive the tranny but still cause the tranny input shaft to rotate preventing it from being put into gear.
Do the gears grind when trying to put into gear? With engine off you should still be able to push the machine if you put it in neutral. Unless, of course it is a hydrostatic transmission, in which case there should be a lever to push/pull which will put the hydrostat in neutral. This is all assuming that it is a hydro and while running the machine won't move when putting the drive lever into forward or reverse.

Mar 24, 2014 | Craftsman 20 hp 42 in. Deck Lawn Tractor -...

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Viking Mt433T Rideon, backwheels do not drive just freewheels


hi there

is your machine a hydro unit ?

if so check that you have not left it in bypass mode ? there should be a rod or lever you push back in to disengage bypass

then check that the square 3/16 keys are in the wheel hubs if they use keys

if not check that the vee belt has tension on it and belt has not jumped off and the input pulley is turning on the top of the hydro box or gear box


if all is good could have a hydro or gear box fault

have a look and let me know

cheers pauly46

dont forget the thumbs rating

Jun 05, 2011 | Riding Mowers & Garden Tractors

1 Answer

Does not move when in neutral and the brake is off. push forward or reverse.


hi there pauly 46 here

make sure that the hydro box bypass lever is engaged ( that is pushed in)

check that the axle /shaft keys are in place ( or unit wont move )

make sure there is tension on the drive belt and the tensioner pulley is ok and belt has not jumped off and the transmission input pulley on top off the hydro box is turning.

then check that the splines on the trans input pulley are not stripped.

then check that the input shaft splines are not stripped as well.

make sure the hydro box has got the correct amount of oil


have look and see what you can find


cheers pauly46

Apr 24, 2011 | John Deere 22HP Hydrostatic 42" Riding...

1 Answer

I HAVE A19.5 42 INCH CUT MOWER WITH AUTO TRANSMISSION. IT WILL NOT MOVE WITH TH MOTOR RUNNING FOWARD OUR BACKWARDS. THE BELT IS OK AND THE LEVER TO RELEASE IS IN. IT WILL FREE WEEL NOMATTER WHERE YOU...


are the wheel / axle keys in the shafts ? make sure they are in the shafts with the wheels

provided you have correct tension on drive belt and belt is good and pulleys are all good , and spline on top of gear box input shaft is good not stipped ( as well as the pulley spline )check splines on shaft and pulley carefully

you should have movement of the variable displacement pump in the trans if all is good here ?

sounds like you may have a stuck bypass actuator in the box or the oil level has got low
and needs refilling and bleeding of air

make sure the lever is actually moving the swash plate for the transmission

if trans has a stuck or broken bypass - trans will ned opening up
let your local dealer take a look gearbox job on hydro units are not exactly easy
to fix unless you know what you are doing night pay to let local dealer repair it for you !!!!!!

cheers



Jan 23, 2011 | Craftsman 20 Hp 42" Deck Lawn Tractor

1 Answer

I have a Sabre 1846 HV. The transmission began to make a loud squealing noise and won't pull the mower. How do I evaluate the problem? How do I remove the frame to get to the transmission?


Input shaft pulley splines are stripped.Input shaft is forged steel and the pulley is cast so 99% of the time only the pulley will need to be replaced.6 bolts,hydro lever,tow rod and brake rod needs to be removed.Our shop does about 1 Sabre every 2-3 months with this same condition.Takes less than 2 hours time to repair.

May 28, 2010 | Craftsman 17.5 hp 42 in. Deck Lawn Tractor...

1 Answer

Splined parts problem


Can you find a blade that fits the new spline? I have a guy here in town that has gobs of parts, And he knows his mowers, I was pretty impressed, he might have what you need. I'm up here in Whoville outside of Gainesville.

Mar 16, 2010 | Craftsman 42 in. Deck 19.5hp Lawn Tractor

1 Answer

1962 JD 4010. TRANS SHAFTS TURNING, WON'T MOVE. SUSPECT REAREND PROBLEMS. ANY IDEAS?


Try removing the the transmission shaft and you will likely find that the splines are missing from either the input or output shafts.

Dec 20, 2009 | John Deere 4020 Gas & Diesel Tractor...

1 Answer

I am having problems stripping the mandrel shafts and pulley, can any one tell me why, is this just a weak point or what?


Are you saying the pulley on top of the blade spindle is stripping out? If it has done it once and you did not replace the pulley and shaft, it will happen again. The shaft and the pulley are splined and if they gets loose, it will strip the splines from both. In other words, you have to replace the pulley and the shaft for it to work...and tighten them securely. If that doesn't answer your question, let me know. Dwain

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