Persimmnon
Member
HELP...
On a NH 276 I have rebuilt the PTO clutch, including 4 new fiber clutch plates and new ball bearing race on the end of the shaft that supports the clutch plates, and a new universal joint. I have reassembled the clutch but need advice about tightening the 3/8" bolt that secures the overriding clutch to the shaft. The ball bearing race seats in the overriding clutch housing and is held in place with a circlip. But there is a gap between this race and the end of the shaft into which the 3/8 bolt screws. This gap means that the ballbearing race does not seat against the end of the shaft. So when I tighten the bolt it distorts the ball bearing race causing it to jam. I can back the bolt off to allow the ball bearings to move. I need to know how much to tighten that bolt sufficiently to stop it backing out but not so tight that it causes too much friction. I am going to use blue Loctite on the bolt threads but I can only loosely tighten it before the bearing race starts jamming.
Seems a poor design and really need a castellated nut on a stud with a split pin rather than a bolt.
On a NH 276 I have rebuilt the PTO clutch, including 4 new fiber clutch plates and new ball bearing race on the end of the shaft that supports the clutch plates, and a new universal joint. I have reassembled the clutch but need advice about tightening the 3/8" bolt that secures the overriding clutch to the shaft. The ball bearing race seats in the overriding clutch housing and is held in place with a circlip. But there is a gap between this race and the end of the shaft into which the 3/8 bolt screws. This gap means that the ballbearing race does not seat against the end of the shaft. So when I tighten the bolt it distorts the ball bearing race causing it to jam. I can back the bolt off to allow the ball bearings to move. I need to know how much to tighten that bolt sufficiently to stop it backing out but not so tight that it causes too much friction. I am going to use blue Loctite on the bolt threads but I can only loosely tighten it before the bearing race starts jamming.
Seems a poor design and really need a castellated nut on a stud with a split pin rather than a bolt.
