Topic: ok guys here's a tuff one (Read 10989 times)

isle of man · « **Reply #50 on:** November 04, 2006, 10:10:06 PM »

so am i right?
the bearing are starved of oil?

peter henry

Bubba · « **Reply #51 on:** November 05, 2006, 08:51:08 AM »

naa dont rekon

greggmo · « **Reply #52 on:** November 05, 2006, 06:34:23 PM »

if they where starved of oil the seal wouldnt have started leaking last time surely?

isle of man · « **Reply #53 on:** November 05, 2006, 06:42:47 PM »

it's the oil retained by the lower baffle i'm thinking of..........

peter henry

Bubba · « **Reply #54 on:** November 05, 2006, 08:52:14 PM »

its all in there as mik can testify

isle of man · « **Reply #55 on:** November 05, 2006, 09:12:50 PM »

mmmmmmm........well how about the lift and re-gear was it done at the same time? only i'm thinking the angle for the pinion has moved and thus reducing the oil supply to the bearings??? i had a wrangler (now owned by waggers) that had the axle level plug moved higher to compensate for this............if not that then i'm back to the pumpkin is u/s

still thinking,

peter henry

Bubba · « **Reply #56 on:** November 05, 2006, 09:28:53 PM »

lift went on first then almost a year later the regear its only a four popper so only makes as much power as a hoover so that wouldnt damadge the pumkin and there ar know heavy impact marks on it pity a cj axel could not be fitted i cant help wonder if the pinion itself is not machined true

greggmo · « **Reply #57 on:** November 05, 2006, 09:29:29 PM »

nope. the lift has been on two yaers longer than the regear. the stuff that came out was perfect with good wear pattern. keep thinkin guys.

isle of man · « **Reply #58 on:** November 05, 2006, 09:39:21 PM »

well it's possible................but on a earlier thread it was stated that a quality replacement part was used.

still thinking,

peter henry

Bubba · « **Reply #59 on:** November 05, 2006, 09:43:48 PM »

i didnt whitle it out of a lump wood if thats what ya thinkin

greggmo · « **Reply #60 on:** November 05, 2006, 09:46:03 PM »

:lol: bubba you ass. the parts where all new and they where tomken bearings and propper install kits where user both times.

eastryjeep · « **Reply #61 on:** November 06, 2006, 01:25:41 PM »

Really grasping at straws now, but still thinking though!
Would/could siezed or sloppy propshaft splines or an out of balance shaft cause bearing failure like this?
BTW if your bearings are manufactured by Timken then you have a quality part, however Tomken is a make I've never heard of.
Also of note is that when bearings are paired in such close proximity they sometimes need to be a 'matched pair' and are sold as such. They are naturally more expensive, but if it's a matched pair you need that's the only way to go or else this is exactly the kind of problem you'll get.

Still thinking!

MK1 · « **Reply #62 on:** November 06, 2006, 01:55:06 PM »

I suspect that because I and O are next to each other then it is a case of fat fingers. I guess he means timken.

greggmo · « **Reply #63 on:** November 06, 2006, 03:39:34 PM »

yeh i mean timken. tomken is a company that make bumpers and stuff. my fingers aint as fat as yours barsey. :lol:

eastryjeep · « **Reply #64 on:** November 07, 2006, 12:24:36 PM »

Still thinking!
As this problem started when you re-geared, I still suspect that's where our root cause lies.
How tall did you go on your gearing? It occurred to me that if you have gone right to the limit and now have a lot of unsprung mass in the way of large diameter heavy tyres, heavy rims, bead locks, and very tall gearing all compounded with a motor with plenty of grunt (or any sort of combination) then you may just have reached the extent of the modifications that your front axle will actually take!
Think of it like this.
Through all these tribulations, the rear diff has remained quite happy and the only fundamental difference between the two diffs (please correct me if I'm wrong here) is that the input shaft turns in the opposite direction. So my reasoning is that if the whole drivetrain, after the transfer case, were stressed close to the max. then when you step on the noise pedal the rear pinion gear loads itself up into engagement (as designed in deepest darkest history), whilst the front pinion shaft may be trying to push itself out of engagement, along the shaft axis, releasing the bearing preload and generally knackering the bearings because they are now outside optimal operating parameters.
Follow this link and scroll down to 'Solid Spacers' and see if this rings any bells:

http://www.allprooffroad.com/index.php? ... view&id=20

greggmo · « **Reply #65 on:** November 07, 2006, 12:56:43 PM »

there is no crush sleve in the front end. cos that was what we thought about the back at first. keep em comin.

eastryjeep · « **Reply #66 on:** November 07, 2006, 01:44:57 PM »

Try these links then!

http://www.jpmagazine.com/techarticles/ ... g_dana_35/

http://www.4x4wire.com/tech/pinionangle/

Stopped thinking and started surfing now!

HMR-RSQ · « **Reply #67 on:** November 09, 2006, 12:21:08 AM »

Heh do ya have any vibs at mid/hiway speeds? ,
1) possibly the yoke could be loose on the pinion.
2)Contact the gear manufacture
3)Pinion outta wack!
4)Is this a daily driver?
I used to own www.gotjeepwedo.com until I got sick(cancer) and I'll try to help where I can.
The gear manufacture will probably replace gear set and install kit. If ya persist. They can afford to do this from time to time.
Good luck HMR-RSQ

greggmo · « **Reply #68 on:** November 09, 2006, 07:21:24 PM »

yes mate did have vibes but i think the prop needs a balance. it is now running without the prop until i can get it sorted once and for all. so you think the pinion might be the problem? it is my daily driver but doesn't clock up a great deal of miles.

eastryjeep · « **Reply #69 on:** November 10, 2006, 11:38:30 AM »

Tall gearing, moderate speeds and prop whirl caused by an out of balance shaft would do the pinion bearings in for sure!

greggmo · « **Reply #70 on:** November 11, 2006, 12:02:27 AM »

i see ya point mate but it ain't done hardly any miles each time and the only time i had vibes was at motorway speeds which i don't do very regularly. i think i will order more bits and have a rebuild again and get the prop in for balancing again and see what happens cos it just still don't make sense. :shock:

Dingo · « **Reply #71 on:** November 11, 2006, 01:27:24 AM »

What about getting freewheeling hubs? Save the front prop and locker wearing out, save it for offroading like moi. Not a cure but your bearings might last longer.

greggmo · « **Reply #72 on:** November 11, 2006, 09:25:47 AM »

i would love the hub conversion ding but it is bloody expensive. :cry:

Author Topic: ok guys here's a tuff one (Read 10989 times)

eastryjeep

MK1

eastryjeep

eastryjeep

HMR-RSQ

eastryjeep

Dingo