1980 Ford 3600 with Q Cab, 6700 hrs runs great
Had a new double clutch put in my machine 3 weeks ago at the dealer, clutch was stuck and inop and way worn out ($3000 for all that work). Dealer mechanic said no problems inside, went back together perfectly but noticed PTO shaft does not spin when engaged but absolutely sure nothing is causing that in the clutch. Guy says he has worked on 3600s for about 30 years and nothing abnormal about this one. I went to the dealer mid-job and saw it myself while split and he showed me things and that all looked good, other than the clutch. Now that I have it back, the tractor goes into gear and drives fine through all gears/ranges, however, I try to engage the PTO and handle moves and feels to engage/move the collars inside but no action on the PTO shaft when let the clutch out.
I have replaced the PTO shaft, shift collar, input shaft collar, shift fork, shift cover, shift handle, detent spring and ball, rear PTO seal, pto shaft bearing and PTO shaft sleeve on his recommendation as he thought the problem was the either the fork or collars. When I took the old shaft out, noticed that PTO shaft collar looked worn and the shaft had two areas on the splines that looked damaged or possibly welded? Input shaft looked just fine. No noises at all when moving the tractor, drives like new.
Put all that back together, with no luck getting the PTO to function at any position of the clutch. Later, I noticed that the clutch linkage is adjusted all the way down (rod is as short as possibly can get). Im confused as to how the PTO clutch would not work while the trans/drive clutch would (should disengage trans first as pedal is depressed, then the PTO clutch). Also noticed the clutch arm is not vertical with the clutch pedal out (like other tractors I have seen in pictures) but sits about 15 degrees off vertical pointed towards the back of the tractor with the clutch pedal out. The arm looks like it has had some welding on it around the area where it sits on the clutch shaft, perhaps it slipped some and that was a fix for it by the previous owner.
Question: is this an adjustment issue of the linkage or likely more serious internal problems? I really cant explain how it can have trans drive but not PTO action with the double clutch when the clutch pedal is released. Seems to me that you would expect the PTO clutch to work but not the trans if the clutch was far out of adjustment or something was wrong with the clutch?
Really, really not looking to split this tractor again at the clutch just to find the issue is not there (I believe the mechanic, he had the tractor for 2 months working on it). The linkage adjustment and arm position, just looking at it, seem a little odd, like the clutch is partly depressed, but not sure how that would work as I explained. With all the internal shafts (that I could access at least) looking good, no broken pieces found, no metal shavings, etc and replacing all the parts that potentially could break or cause probs in the PTO, Im at a loss as what to do next. I don't think breaking an input shaft or countershaft inside the trans would be the problem as I don't hear any noises or grinding at all.
Any help or things I can do to potentially diagnose this machine's issues are much appreciated, Im stuck now on this and really need to get this PTO turning as Im in Texas and grass down here starts growing again in a month or so! Thanks!
Had a new double clutch put in my machine 3 weeks ago at the dealer, clutch was stuck and inop and way worn out ($3000 for all that work). Dealer mechanic said no problems inside, went back together perfectly but noticed PTO shaft does not spin when engaged but absolutely sure nothing is causing that in the clutch. Guy says he has worked on 3600s for about 30 years and nothing abnormal about this one. I went to the dealer mid-job and saw it myself while split and he showed me things and that all looked good, other than the clutch. Now that I have it back, the tractor goes into gear and drives fine through all gears/ranges, however, I try to engage the PTO and handle moves and feels to engage/move the collars inside but no action on the PTO shaft when let the clutch out.
I have replaced the PTO shaft, shift collar, input shaft collar, shift fork, shift cover, shift handle, detent spring and ball, rear PTO seal, pto shaft bearing and PTO shaft sleeve on his recommendation as he thought the problem was the either the fork or collars. When I took the old shaft out, noticed that PTO shaft collar looked worn and the shaft had two areas on the splines that looked damaged or possibly welded? Input shaft looked just fine. No noises at all when moving the tractor, drives like new.
Put all that back together, with no luck getting the PTO to function at any position of the clutch. Later, I noticed that the clutch linkage is adjusted all the way down (rod is as short as possibly can get). Im confused as to how the PTO clutch would not work while the trans/drive clutch would (should disengage trans first as pedal is depressed, then the PTO clutch). Also noticed the clutch arm is not vertical with the clutch pedal out (like other tractors I have seen in pictures) but sits about 15 degrees off vertical pointed towards the back of the tractor with the clutch pedal out. The arm looks like it has had some welding on it around the area where it sits on the clutch shaft, perhaps it slipped some and that was a fix for it by the previous owner.
Question: is this an adjustment issue of the linkage or likely more serious internal problems? I really cant explain how it can have trans drive but not PTO action with the double clutch when the clutch pedal is released. Seems to me that you would expect the PTO clutch to work but not the trans if the clutch was far out of adjustment or something was wrong with the clutch?
Really, really not looking to split this tractor again at the clutch just to find the issue is not there (I believe the mechanic, he had the tractor for 2 months working on it). The linkage adjustment and arm position, just looking at it, seem a little odd, like the clutch is partly depressed, but not sure how that would work as I explained. With all the internal shafts (that I could access at least) looking good, no broken pieces found, no metal shavings, etc and replacing all the parts that potentially could break or cause probs in the PTO, Im at a loss as what to do next. I don't think breaking an input shaft or countershaft inside the trans would be the problem as I don't hear any noises or grinding at all.
Any help or things I can do to potentially diagnose this machine's issues are much appreciated, Im stuck now on this and really need to get this PTO turning as Im in Texas and grass down here starts growing again in a month or so! Thanks!