Forum:
H reg Fourtrack 2.8TD..........
hi all, i plucked up courage and took the propshaft off, i was hoping to get a 2nd hand propshaft to put back on but the fella (the bastard) sold it to another "person".
I can now see that it ONLY needs a new UJ at the rear end, the front end is OK, so when i get a new UJ is it easy enough to put it in ???, i suppose a press is best but i have a G cramp or two that would surely do ?, never done one before, whats my chances of buggering it up.
tim
uj's
they are usually held in with a circlip, really need a good quality vice or better still a press, check first that the yolk isnt damaged only usually gets damage if uvj has been gone a long time. dont know where abouts you are but if your anywhere nr leicester theres a company called MJC enginering that can supply parts or even make up a new prop at very reasonable prices. hope this helps
U/J replacement
Hi
How I did mine.
Marked propshaft/gearbox/diff joins with Tippex,so as to be able to replace in the same position(re-vibration/balance), unbolted whole shaft, easier than trying to part shaft under truck, marked prop shaft join with Tippex again for same reason.Split shaft and removed cirlips, from offending U/J, sprayed on lots of release fluid,placed in the vice, used a socket,against the bearing cap , small enough to push through the bearing housing, with a socket with the nut end to act as a receiver on the other side for the bearing cap, slowly tighten vice and the assembly should push through, into the larger socket, Do same for the other leg of the U/J, wiggle spider out and punch the caps out. Clean up, removing burrs with fine emery paper. Replace bearing cups/spider in same manner, hold the U/J needle rollers in place with grease, if you cannot press them in with gentle pressure ,remove and check that the needle rollers have not come out of place. Replace cirlips and grease prop shaft join , then bolt up aligning reference marks.Grease U/Js. Job normally includes lots of ***** words, this has to be excepted.
Hope this makes sense and is helpful.(probably missed something but if I have, some one will fill it in)
Edward (ews) '92 Fourtrak 2.8 TDX
thanks for that info
thanks for that info friends, i think i will do it myself following the information laid out very helpfully by EWS, one thing i'm not too sure of yet, are the parts tapered or parralel, by parts, i mean the sides of the holes in the prop shaft and yoke, as i would think the cups that go in these holes would be the same, they must be parralel hhmmm
tim
can I cheat a bit on the old UJ ???
sorted it, i put the new UJ on this weekend, i was well pleased with the end result, the first half went like a dream, then a mate of mine turned up to help, good job he did, becuase i then appreciated how much a second pair of hands helped, as i had to take the second half apart twice, as i found one of the rollers had moved and lay in the bottom of the cup, which of course stopped me getting both circlips in. third time lucky, although my mate, when he saw we had a problem roller, he suggested leaving it OUT !!!!!!!!, i couldnt believe what he said, i was never going to do that, now of course with a new UJ one end of the prop shaft it prooves that the UJ the other end is a little worn, it isnt so much wear on the rollers but the cups move a bit away from the circlip, on all 4 "ends", so is it allowed to put an extra washer (or old circlip) under the circlip ??
tim
U/J repair
To add to previous post.
You could gas cut the u/j on the four spider arms, them push out the bearing caps. Desperate measures, but take care not to cut the yoke.
Edward (ews) '92 Fourtrak 2.8 TDX
oooo, got no cutter of any
oooo, got no cutter of any sort, i assume that removing the "snap rings" should allow the cup to come out of the hole in an outwards direction, have i got that right ?.
tim
u/j
The bearing caps are a push/friction fit,they will not just fall out when you remove the snap rings.
Remove all snap rings,then you press the 1st bearing cup through/into the u/j yoke, in doing so you push the the spider and the opposite bearing cap into the sightlier larger socket,(I used a 'deep socket' sure you could work some thing to act as a receiver), other side of the yoke. With luck it will push completely out ,if not you will have persuade to come the last bit. Needle bearing will now fall all over the place. Take the other arm of the assembly (untouched one) and do the same, wiggle out the spider/center of u/j, and punch through the two caps which you pushed through towards the center of th u/j.
The job is easier by seeing it done, for the first time. It really is simple, even if I seem to have made it seem complicated
Edward (ews) '92 Fourtrak 2.8 TDX
use the front wheel drive option to still use it
some bright spark this morning told me (while i was walking the dog) that we could still use the motor with the rear propshaft removed by simply putting into 4 wheel drive and driving the front wheels only, LOL.
I suppose this is perfectly feasable but havent ever put it into 4 wheel drive yet, not only that, while the Rocky is off the road the driver gets to use Mum's car(a Clio), which just has to be more comfortable LOL.
PS. the more i read the info from EWS, the more i feel confident in Doing It Myself, this UJ job.
tim
I did my propshaft rear UJ
I did my propshaft rear UJ a few weeks ago on my Fourtrak, and because of a wrong part sent by milners (anyone need a UJ kit for a Toyota Hilux? It doesn't fit a Fourtrak, I've tried), poor old Nagamochi was without a rear propshaft for a week. I did precisely what was suggested to you; knocked it into 4x4, locked my front hubs, and off I went.
Ref your earlier comments about parralel/tapered .... I think I see what your getting at. The answer is it's parallel.
The clips stop the bearing cups falling out, there is nothing preventing them falling in except the four-legged spider in the middle, no tapers, no flanges. If it were not for the four-legged spider in the middle, you would be able to push the bearing cups right through the holes and out the other side.
Which is exactly how you get the old spider out; remove the clips holding two opposed bearings in and push on one of them until the opposite bearing comes out the other side (at least far enough to grab it with a pair of mole grips, stilson wrench, or a vise, then pull/twist it the rest of the way out). Then reverse your pushing device to push through the hole you just removed the bearing from onto the spider and push the spider and opposite bearing out enough to grab and extract that one. Finally, repeat for the other opposed pair of bearing cups. I too wasn't sure if they were tapered or flanged, so I dropped the propshaft into a local workshop and they extracted the old UJ for me (cost me £16 inc vat, they also cleaned the holes up for me, and were careful enough to not disrupt any of the tipex marks I had painted over various bits), but I confirmed this to be a valid method of extraction when putting the new UJ in, and managed to extract an opposed pair of bearings with just a large G-Clamp and a couple of sockets (one large enough for the entire bearing to fit inside it, one small enough to fit inside the hole the bearing cup sits in).
Hope this helps, I think it confirms the way you are thinking to get the bearing cups out is indeed the way to go, push on the opposite bearing and the whole bearing/spider/bearing assembly will move just about far enough to grab hold and pull the bearing opposite the one your pushing on, reverse and repeat, then repeat for the other pair.
Duncan
warning: may contain traces of nut.
Duncan
warning: may contain traces of nut.
thanks
thanks for that NUT, i didnt get to see your post until friday night at 9pm, it was thursday morning (yesterday) that i eventually got around to putting it into 4 wheel drive, which was 5 days after removing rear prop shaft, as it turned out daughter had to use it for transport !, shit or bust, anyway tommorrow (saturday) morning is the day for fixing the UJ, we got our UJ from "japanese4by4 spares", i hope it is the correct bit !, thanks for your tips on how to do it pal. I hope i get it right because Rocky is supposed to going to Wales on sunday to pick up a couple of horses !.
I must remember to get a grease gun and some loctite !.
tim