Topic: ok guys here's a tuff one (Read 14050 times)

greggmo · « **on:** October 31, 2006, 10:41:24 AM »

just a question for you clever ones out there. my front pinion bearings keep destroying them selves. when i get em fixed again this will be the third set. the last sat where done by a professional and it seems we still have the same problem. it is not a lubrication problem because the last time they went the pinion oil seal was leaking oil so the is obviously oil there. it is just real strange and it is starting to piss me off now. at the moment i cant afford the new bearings but when i can i don't want them just to be another waste of money. any ideas guys???

Mike Pavelin · « **Reply #1 on:** October 31, 2006, 10:50:21 AM »

Are you setting the rolling torque properly during installation?

MK1 · « **Reply #2 on:** October 31, 2006, 10:54:49 AM »

Is the bearing seat slightly ovaled or worn?

eastryjeep · « **Reply #3 on:** October 31, 2006, 11:02:16 AM »

Are you using OEM replacments or not? If not are you sure the replacments meet all the manufacturers specs.

isle of man · « **Reply #4 on:** October 31, 2006, 11:19:58 AM »

more information needed.............what lift have you?(if any) and what tyres are you running?(size) also do you have a double cardigan propshaft?(on the front) is it both bearings that fail the upper and lower?

peter henry

Mike Pavelin · « **Reply #5 on:** October 31, 2006, 11:27:17 AM »

Quote from: "isle of man"

double cardigan propshaft?

peter henry

If not, a couple of nice wooly sweaters will do.

MK1 · « **Reply #6 on:** October 31, 2006, 11:28:17 AM »

Quote from: "Mike Pavelin"

Quote from: "isle of man"
double cardigan propshaft?

peter henry

If not, a couple of nice wooly sweaters will do.

I prefer a big fleece type garment myself.

isle of man · « **Reply #7 on:** October 31, 2006, 11:33:10 AM »

ok ok cardan

peter henry

greggmo · « **Reply #8 on:** October 31, 2006, 11:37:39 AM »

ok. no i dont have a cardin joint as it is a yj. over all i gues there is about 4.5 of suspension lift. running 33,s+ 4.88 ring and pinoins and yes both bearings are knacked each time and they have been tomken bearings each time. as i said the job was done properly and all the right settings made at the time of install.

Mike Pavelin · « **Reply #9 on:** October 31, 2006, 11:40:57 AM »

How are you setting the pinion up when installing the bearings?

UKJeeper · « **Reply #10 on:** October 31, 2006, 11:44:57 AM »

Hmmmm, 4.5" lift and no SYE? :? Is the T case dropped? If your running a stock driveshaft and no t case drop, i'd be wondering about the driveshaft angles.

UKJeeper · « **Reply #11 on:** October 31, 2006, 11:46:21 AM »

Quote from: "Mark Barrs"

I prefer a big fleece type garment myself.

I thought you might prefer a nice rollover... :oops: :wink:

MK1 · « **Reply #12 on:** October 31, 2006, 11:49:15 AM »

:smt019

Mike Pavelin · « **Reply #13 on:** October 31, 2006, 11:50:02 AM »

Quote from: "UKJeeper"

Hmmmm, 4.5" lift and no SYE? :? Is the T case dropped? If your running a stock driveshaft and no t case drop, i'd be wondering about the driveshaft angles.

SYE???

It's a YJ front axle.

The front prop only spins when in part time (assuming you still have axle disconnect) and it already has the dual sweater (double cardan) propshaft. Might be worth checking the front UJ isn't binding on itseld on full articulation I guess but other than that, it is only running at low speed and only occasionally so I can't see it being too much of an issue.

MK1 · « **Reply #14 on:** October 31, 2006, 11:52:46 AM »

Quote from: "Mike Pavelin"

SYE???

It's a YJ front axle.

The front prop only spins when in part time (assuming you still have axle disconnect) and it already has the dual sweater (double cardan) propshaft.

You don't get any of this nonsense with a good ol' CJ!

UKJeeper · « **Reply #15 on:** October 31, 2006, 11:55:16 AM »

Quote from: "Mike Pavelin"

It's a YJ front axle.

DOH. Missed that bit. I'm an idiot. :oops:

Dingo · « **Reply #16 on:** October 31, 2006, 12:35:52 PM »

Are the props of stock length?

Asylum · « **Reply #17 on:** October 31, 2006, 12:36:05 PM »

Aparently, lack of backlash may cause noise, overloading, overheating, or seizing and failure of the gears or bearings. But after reading the below link several times (I am thinking of doing the work myself when I change my R&P's on my froader) as too little pinion bearing preload diminishes load-bearing capacity as the load-bearing surfaces between rollers and cup are decreased. Too much preload increases friction, resulting in excessive noise, heat, and rapid wear. That would be my guess :prayer:

Clayt

greggmo · « **Reply #18 on:** October 31, 2006, 12:49:35 PM »

the pinion does run all the time as i have a no-slip in there but i cant see how this would make any odds. the back one runs all the time and that has not got the same problem.

isle of man · « **Reply #19 on:** October 31, 2006, 01:09:19 PM »

i'm thinking check the prop joints and length both compressed and extended and then if all good the pumpkin must be u/s.

no woolly pulleys there.......yerr yerr i know

peter henry

MK1 · « **Reply #20 on:** October 31, 2006, 01:13:00 PM »

Quote from: "isle of man"

and then if all good the pumpkin must be u/s.

It's a good day for it, you can make a silly lantern type thing out of it!

greggmo · « **Reply #21 on:** October 31, 2006, 01:22:56 PM »

thanks for you input guys.

isle of man · « **Reply #22 on:** October 31, 2006, 01:22:57 PM »

Quote from: "Mark Barrs"

Quote from: "isle of man"
and then if all good the pumpkin must be u/s.

It's a good day for it, you can make a silly lantern type thing out of it!

i'm thinking your on-a-roll.

ter der.

peter henry

MK1 · « **Reply #23 on:** October 31, 2006, 01:28:01 PM »

:smt005

greggmo · « **Reply #24 on:** October 31, 2006, 06:36:50 PM »

any more ideas?

Author Topic: ok guys here's a tuff one (Read 14050 times)

Mike Pavelin

MK1

eastryjeep

Mike Pavelin

MK1

Mike Pavelin

UKJeeper

UKJeeper

MK1

Mike Pavelin

MK1

UKJeeper

Dingo

MK1

MK1