Topic: Jeep Grand Cherokee Laredo 2.5td on a P ABS and front hub universal joint probs (Read 4061 times)

scoobysnacks · « **on:** August 03, 2010, 11:16:58 PM »

Hi, been on here for a while but not been on for ages, been a busy time! I have a Grand Cherokee Loredo 2.5TD on a P plate. It has the Command Trac 4wd system with the limited slip rear diff.

I was driving along today when I heard a loud clunk/bang from the front end. Next time I went to brake, the pedal pulsed as if the ABS was firing and braking was difficult. Had to really stand on the pedal to get the truck to stop, shaking my teeth out in the process!

The car now has a clunk when driving, and the braking problem has continued.

Just jacked her up and whipped the front wheel off, and it seems that the u-joint at the hub has lost one of it's bolts.

A couple of questions. Firstly is it worth trying to replace the bolt, or will I need to replace the whole u-joint? Secondly, might this cause the ABS/braking fault? Is the toothed wheel on the inside of the hub the ABS speed sensor? If so is it likely that it will work properly when I sort the U-joint, or might it have damaged the sensor?

I have the Haynes manual, somewhere, but we're moving soon and I think it's ended up in a box somewhere! Any help would be great. Also a link to an online copy of the workshop manual?

Cheers

Matt

Dave69 · « **Reply #1 on:** August 04, 2010, 08:37:30 PM »

might be worth a picture being posted.

a lost bolt on the u joint at the wheel hub is confusing

Bubba · « **Reply #2 on:** August 04, 2010, 08:52:12 PM »

isle of man · « **Reply #3 on:** August 04, 2010, 08:55:04 PM »

I'm struggling with your description - so for the UJ bolt they are a "one use" item so replace it - the drive line problem I believe the CV joint has sized, can you remove the front prop and drive without it to establish my reasoning? I'm 80% on this one.

Bubba · « **Reply #4 on:** August 04, 2010, 08:57:12 PM »

now i read it as one of the three bolts holding the hub has sheared/come out

scoobysnacks · « **Reply #5 on:** August 04, 2010, 10:55:22 PM »

My description is a bit shoddy I grant you. Here's a pic of what I'm trying to describe.

This is a picture of the offside front hub, taken from the front and slightly above. To the right is the brake disc. The bolt that is missing is underneath the brake pipe, and the location is circled in yellow.

On the end of the front drive shaft, where the drive joins the hub, there is a universal joint (constant velocity joint if you prefer).

One of the bolts that secures the inboard horseshoe has come loose, so that one end of the fork is loose.

Hope that makes things clearer.

Thanks for the help!

Mike Pavelin · « **Reply #6 on:** August 05, 2010, 06:47:56 AM »

Still not very clear but it sounds like the UJ has spat all the rollers out of one cap, or lost the cap as well. Best senario, you need a new joint, but worst way, if the hole in the yoke is oval you'll need a shaft as well.

scoobysnacks · « **Reply #7 on:** August 05, 2010, 09:40:23 AM »

I'll go with that description. One cap has gone, leaving the cross shaft flapping in the breeze like a dick in a Wellington! So new U J then, how much should I be looking at for one of those, parts only? Would that explain the abs playing up too? I'll have a look at the yoke, hope it's not boogered too!

isle of man · « **Reply #8 on:** August 05, 2010, 01:42:11 PM »

If the cap has gone the ear will be foooooked new shaft required - I believe Eblag has them.

Dave69 · « **Reply #9 on:** August 05, 2010, 10:06:36 PM »

ring lighthouse and see what they have, should be the same as the petrol so you have the choice of std, greasable or heavy duty. price around the £25 (might be less depending on what you choose) and then theres the next day delivery.

scoobysnacks · « **Reply #10 on:** August 06, 2010, 10:22:22 PM »

Ok. Managed to get the hub off and have a look at the UJ.

The cup from one side of the inside yoke has completely disappeared. It has obviously got slightly jammed on the way out and taken a huge chunk out of the ABS ring (hence the ABS symptoms?)

I managed to get the C clip off the other cap, and wiggle the inner drive shaft off the UJ.

Went looking for the C clips to remove the caps from the outer drive shaft yoke, only to find they weren't there.

Took the wire brush to the yoke to clean it up, only to find some feckwit has welded the caps into the yoke!

Now looking at a whole new outer drive shaft and yoke, unless I can manage to get the caps out, but I'm thinking they're probable welded in place because the yoke is damaged!

I can get a complete drive shaft assembly from the scrappy. He wants £100 for it though, which I think is rich for a scrappy part. However, the other options seem more expensive.

Nobody seems to stock any of these parts, except for the UJ spider. Does anyone know where I might find them at a sensible price?

Mike Pavelin · « **Reply #11 on:** August 07, 2010, 07:39:15 AM »

The shaft assembly is the same as a 97 onwards XJ Cherokee 4.0 or 2.5TD with ABS. Loads around being broken up for spares.

ferretjuggler · « **Reply #12 on:** August 07, 2010, 08:03:49 AM »

Scrounge an ABS ring from wherever (someone on here must have one) then get a new UJ and re-bodge it with the welder.

It may not last too long but it will buy you enough time to find a complete replacement axle mucho cheapo.

scoobysnacks · « **Reply #13 on:** August 07, 2010, 10:03:37 AM »

Ferret. I would, but I'm not allowed to play with the welder any more, since I got the pacemaker!

And paying someone to do welding is kind of alien to me. I'm a bit of a cheapskate really!

Anyone got an axle going cheap? What axels will fit, and is there a better one it's worth fitting? Bearing in mind mine's got Command Trac, does it need to come off another vehicle with that system or are they interchangeable?

Dave69 · « **Reply #14 on:** August 07, 2010, 11:32:12 AM »

daggie · « **Reply #15 on:** August 07, 2010, 11:41:37 AM »

just swap the halfshaft out, for a good one

where abouts are you

Bubba · « **Reply #16 on:** August 07, 2010, 12:01:05 PM »

yup where dood maybe someone could help

scoobysnacks · « **Reply #17 on:** August 07, 2010, 05:11:23 PM »

Just outside Newbury.

Sourced a replacement half shaft with CV and outer drive shaft for £65 delivered. Just need to borrow a vice now so I can get the bloody hub nut off! 175 lb.ft, what's that all about?

daggie · « **Reply #18 on:** August 07, 2010, 06:23:53 PM »

stick it back on the axle, put the disc back on, then a hefty screwdiver in one of the vents and wedge it against the brake slider

scoobysnacks · « **Reply #19 on:** August 07, 2010, 07:52:28 PM »

Quote from: daggie on August 07, 2010, 06:23:53 PM

stick it back on the axle, put the disc back on, then a hefty screwdiver in one of the vents and wedge it against the brake slider

Sounds like a weird sexual practice, are you a tory MP by any chance?

It's an idea, but I have a feeling my screwdriver might give up before the nut does!

Dave69 · « **Reply #20 on:** August 07, 2010, 07:58:13 PM »

you'd be surprised, the screwdriver will drop into the vented part of the disk and wedge against the caliper mount. there is not a big bending motion at this point so the screwdriver preobably will be intact. I have used some from the £1 shop for this and they have been ok after

scoobysnacks · « **Reply #21 on:** August 07, 2010, 09:20:45 PM »

Cool. I'll have a go at that when the 36mm socket arrives. Already broke one screwdriver trying to get the ABS ring off.

Dave69 · « **Reply #22 on:** August 08, 2010, 10:25:53 AM »

your only breaking the torque applied to the nut and not trying to remove something that is fixed solid and not intended to be removed on a regular basis like the tone ring

scoobysnacks · « **Reply #23 on:** August 08, 2010, 04:27:58 PM »

Quote from: Dave69 on August 08, 2010, 10:25:53 AM

your only breaking the torque applied to the nut and not trying to remove something that is fixed solid and not intended to be removed on a regular basis like the tone ring

Implying that the hub is designd to be emoved often due to failures?

Dave69 · « **Reply #24 on:** August 08, 2010, 08:23:07 PM »

the hub isn't prone to failure but needs to be removable for servicing upper and lower ball joints and driveline issues, where as the tone ring is not intended to be removed once fitted.

Author Topic: Jeep Grand Cherokee Laredo 2.5td on a P ABS and front hub universal joint probs (Read 4061 times)

scoobysnacks

scoobysnacks

Mike Pavelin

scoobysnacks

scoobysnacks

Mike Pavelin

ferretjuggler

scoobysnacks

scoobysnacks

scoobysnacks

scoobysnacks

scoobysnacks