Re: 806 Shifter Linkage Trouble(surprise)

Posted by the tractor vet on September 27, 2006 at 18:55:26 from (75.24.40.128):

In Reply to: 806 Shifter Linkage Trouble(surprise) posted by Harlen Larson on September 27, 2006 at 18:21:24:

Well with out me seeing the tractor we will have to start from the top . First make sure that the High Low shifter lock sets in nuteral where ya have to squzze the safty latch to get it out of N then remove the cowel and see if ya have ANY slop in the linkage from the shift lever to shift rod , FIX that, then remove the KICK plate on the steering support ( the panel that has two 3/8th bolts holding it in place ) and check for ware in the linkage there and fix or replace. if ya find much slop and it does not take much to mess up the shifting on one of these tractors . IF all is well from the top on down to the Range transmission cover then we must go deeper , so now we pull the floor plate and remove any hyd. lines for the side remotes if it has them next we remove the side cover on the left side of the tractor it is the one with the cliped corner you will loose about a gallon of hyd fluid . This cover exposes the rev. sliding gear and shift fork , unbolt the top cover and also block up the park lever . IF this 806 has had a spring loaded park lock installed then you must place a 1/2 inch nut not a nut that will take a 1/2 inch wrench but one that needs a 3/4 inch wrench . Caution must be used if it has a spring loaded park lock as it will remove finger if it slips . IT is a big help to have and extra pair of hands while removing the top cover as one must cautch the pices and parts that will fll out on the rev. shift fork like a small woodwrothe keyand the shifting fork you must come stright up with the top cover . Once it is off then you check for broken rollers wore out cam and detent plate broken detent spring and roller woren shifter shaft wore key broken roll pin wore top cover . Next also check for a ft input bearing by wiggeling the top shaft . Now if the shifter collar is bad or the output is bad then Huston you got a BIG problem . Now it is posable that the problem is in the T/A when it was installed someone did not do the job correctly or that the quill in the T/A was machined wrong and this also will make them not want to go into high range but everything else works fine . Like i said i can not check this out for myself so we will have to do this over the key board .

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