NV4500 Tranny Trouble

[a5150nut]

Could be the pivot ball has gone away at the clutch fork. I've seen them wear clear through the fork. Sounds like time to pull the trans and check deeper. When moving the clutch line don't put any stress on it. DISCONECT AT BOTH ENDS before moving things around.

[6.5 Detroit Diesel]

Yea, sounds like it is time to move in. Did some research and found some people have had the fork actually bend after a while. Not sure how much of a possibility this could be though.

[6.5 Detroit Diesel]

Pulled the trans yesterday. Was to dark to see much so had to wait until today to get in close. The bellhousing is still attached to the block. I removed the throwout fork, bearing, and stud. The fork is cracked around the stud hole. The bearing is rather noisy. And the stud is worn down around the contact point. Also, there is apparently a keeper and a seat that go on the end of the stud that were no where in site. Anyone ever seen this before? Would the worn stud and missing seat cause it not to go into gear? I have pics.....

[HH]

YES. Replace the ball & fork, and may as well do the TB too. There is a zerk fitting on the bellhousing to grease that part, most people miss it. You will notice a huge difference.

[6.5 Detroit Diesel]

Well all parts are in. Seems to have done the trick. As for that grease fitting, I couldn't find it on the bellhousing. Is it covered by something? The TB is something that I want to keep well greased in the future.

[HH]

It for greasing the pivot ball. Should be right below where the pivot ball bolts in, IIRC, been a while since I greased mine.

[Turbo Al]

The fork and pivot need to be repaced as a unit and if there is any wear (sounds like you have a lot) on the pivot. These things usally last about 100,000 miles so you should be replacing them every time you do a clutch -- on the 1993 there is actually a grease fitting hiding in there as well.

1993 style outside slave cyl WARNING: DO NOT over tighten the bleed screw on the slave you will crack the housing. First take it out look at it and you will see that it is tappered to fit the hole so no great amount of torque is needed to seat it. Yes I broke the first one I did LOL.

OPPs guess I should have read page 2 before I posted -- yup still mind numbing drugs.

[trbankii]

Is it possible and/or recommended to update to the internal slave cylinder? I just really don't feel good about that plastic slave sitting there waiting to get hung up on a rock while off-road...

[Turbo Al]

I don't see why not. I have not had a later model NV4500 apart so don't know what is involved. On the bright side The under carraige of my 1993 looks like WW111 and have never hit the slave in years of harsh use hunting.
Al

[trbankii]

I do a certain amount of "rockcrawling" that just seems to be begging for one to hit the slave...

I figure that if I'm in there and replacing clutch, fork, pivot, etc, etc I might as well upgrade if possible... Suppose it would be a different master cylinder as well?