New Holland 1925 Won't Move

minkster · Nov 25, 2012

Hello All, I need some help. I have a NH 1925. With a 9x3 Trans. I replaced the clutch 2 years ago and all worked fine. The other day I was spreading some rocks put the tractor in reverse went about 2 feet and it just quit moving the pto does not work. I can shift into any gear with no grinding with clutch depressed or not. I depress the cluth pedal and it sounds like It is working. firm pedal. when I engage the pto it looks like it just engages a little but no turning. Could it be clutch adjustment? Reeding the manual it looks like the input shaft is a direct connect to clutch drive. Any idea's or same problems out there. any help would be appreciated

jinman · Nov 25, 2012

Minkster, welcome to TBN. I'm sorry you are coming here due to problems, but hopefully you will find good advice.

I'm no expert on the 1925, but it seems to me that the failure you described is not pointing toward the clutch. My guess is a broken gear or most likely a splined coupler collar between two gear shaft sections has failed. Sometimes these couplers are held in place by a rollpin and sometimes a "C-clip" or "E-clip" around the shaft. If the clip comes out and the coupler shifts, you lose connection and there is no noise or grinding. Clutches normally fail due to slipping or catastrophic failures are noisy and don't sound good or feel right when you depress the pedal. Your description is that the clutch sounds and feels normal. I looked at the parts diagrams for your tractor and saw several couplers with retaining clips that could disconnect suddenly and cause little else other than complete loss of power. I think that's your problem.

Having both failure of the drive transmission and the PTO drive is a signal of more than the transmission jumping to neutral. Somehow, something that effects both functions has disconnected.

I hate to say it, but splitting the tractor may be required and certainly you'll at least have to remove top covers for inspection. Have you tried jacking up the tractor's rear wheel and manually turning it while shifting through gears and ranges? If the wheel turns freely and you hear nothing inside the transmission, then you'll have to open things up and investigate.

JC-jetro · Nov 25, 2012

Minkster,

Since the clutch engages and disengages with no grinding lead me to Jim's assessment as well. We need to verify that to the extent possible without disassembly. My suggestion is to jack the rear axle and put securely on two jack stand, choke the front wheel securely. With engine "OFF" try to clutch and put the gear in highest possible and see if they are engaging. If they engage then try to clutch and by a help of second person or weight disengage the clutch and observe what happens when you try by hand to rotate the wheels. You have live pto. Disengage the pto to see if turns freely by hand. With clutch out and pto engaged check to see if you can rotate PTO shaft by hand. suggested tests will tell if driving gear/shaft turns driven gear shaft for either PTO or transmission. I think there still remains a possibility for maladjustment causing the problems. Let's hope for that.

JC,

welcome to TBN blue.

minkster · Nov 25, 2012

Thanks Jinman and JC I'll have to get at it next weekend but this is a good start. Ill let u know what happens.

jinman said:
Minkster, welcome to TBN. I'm sorry you are coming here due to problems, but hopefully you will find good advice.

I'm no expert on the 1925, but it seems to me that the failure you described is not pointing toward the clutch. My guess is a broken gear or most likely a splined coupler collar between two gear shaft sections has failed. Sometimes these couplers are held in place by a rollpin and sometimes a "C-clip" or "E-clip" around the shaft. If the clip comes out and the coupler shifts, you lose connection and there is no noise or grinding. Clutches normally fail due to slipping or catastrophic failures are noisy and don't sound good or feel right when you depress the pedal. Your description is that the clutch sounds and feels normal. I looked at the parts diagrams for your tractor and saw several couplers with retaining clips that could disconnect suddenly and cause little else other than complete loss of power. I think that's your problem.

Having both failure of the drive transmission and the PTO drive is a signal of more than the transmission jumping to neutral. Somehow, something that effects both functions has disconnected.

I hate to say it, but splitting the tractor may be required and certainly you'll at least have to remove top covers for inspection. Have you tried jacking up the tractor's rear wheel and manually turning it while shifting through gears and ranges? If the wheel turns freely and you hear nothing inside the transmission, then you'll have to open things up and investigate.