Intermittent severe vibration 2005 LR3 125000 miles

unseenone

Explorer
Well, EPB hangup issues, that would do it, the wheel should be hot then. Most likely it's ruined your rotors. I highly recommend EBC brakes and Rotors... and I'll leave my original bit, in case it helps someone else.

You should be able to put it on a lift and try to isolate the noise. It certainly could be the driveshaft, suspension bushings, rear diff, drive shaft carrier bearing (comes with the driveshaft).. Justin at lucky8llc.com can help you with any of those parts, including differentials, and rebuild kits.

It makes the most sense to get it on a lift and find the problem, rather than guess though, that's what I would do.
 

aythya

New member
makes some sense. during the last service at the dealer they adjusted the parking brake... I've not had this problem prior to this adjustment. I just find it very odd that it only happens every so often. Left rear disc does have some deeper groves than right. Do you think it could be the caliper sticking?

I would think that there would be some drag or indication that a brake is sticking... sound or something...
 

aythya

New member
BTW: i'm ok with replacing the brake components... This is my first LR so I'm a little troubled that I can't get a factory service manual... came from the Land Cruiser world and really liked the factory manual...
 

Colin Hughes

Explorer
The emer drum brake is a tight fit inside the rotor and needs to be finely adjusted thru a small hole in the rotor. The tech could have been unsure, lazy or they didn't do it. We normally have to move the shoes around to get the rotor on then do an adjustment.
 

Hugh166

Observer
It's not only the adjustment through the small hole, there is also a driving procedure that had to be carried out after the rotor and or shoes are replaced and the adjustment through the hole is done. You have to be at a stop in drive and engage and disengage the parking brake 3 times but on the last engagement do not disengage it, drive off with the parking brake on. Then when below 15 mph use the epb to bring the truck to a complete stop. Do that 5 times with about a 1/4 mile between each stop
 

spikemd

Explorer
When I bought my LR3, it had cupped MTRs on it and vibrated lie crazy. Got new tires, still vibrated but much less. Took it to dealer for a general inspection and they replaced two tie rods and did the 4 wheel alignment. Changed front brakes and rotors. Got rid of most of the vibration, but still could feel it from 30+ mph to a stop. Replaced rear rotors and pads and finally I have a smooth LR3! When taking off the rear rotors, I had to adjust the ebrake a bit as it was difficult to pull off. The drivers side was filled with lots of material, which I am assuming may have been a stuck ebrake at some point. Drum pads still had a lot of material so I kept them. I adjusted the ebrake accordingly and did the 'bed-in' procedure with the new rotors and the ebrake. Kind of a pain, but needs to be done. The adjustments take longer than replacing the rotors/pads.

Remember to follow the ebrake procedures before working on the rear brakes and pull the fuse.

To put in Service mode:

Before removing the rear Brake disks, please carry out this sequence to put the Electronic Park Brake into Service Mode.

Ensure brake pads and caliper is fitted to all wheels.

In the car with ignition in Position II, press the brake pedal three times and hold the pedal down.

Push down on the EPB switch for 3-5 seconds.

Go to the main fuse box in the engine bay and remove FL8 fuse 30A (pink Fuse) this will ensure that the EPB is not accidentally re-engaged.

How to adjust the Electronic Park Brake

The Electronic Park Brake is operated by a pair of brake shoes on the inside of the rear brake disks. The manufacturer recommends that you strip, clean and adjust the EPB after 50 miles of off road conditions or arduous use. If you have a loud screeching noise when the EPB is applied, then often an adjustment of the Electronic Park Brake will fix this. This procedure MUST be carried out when you change your brake disks and/or brake shoes. If the pads are worn below the limit, you should replace the pads as well as go through the Electronic Parking Brake Shoe Bedding In Procedure.
 
Last edited:

spikemd

Explorer
Ebrake adjustment

Electronic Ebrake

For an Auto, just don't apply it. The above should be fine if you are leaving the disks on and just adjusting the EPB.

If you're removing the disks for a full clean, then I'd recommend putting it into service mode and removing the 30a fuse.

There are two adjustment parts to the EPB. Using a flat blade screwdriver, remove the plastic lug to reveal a hole.

Turn the disk using the 32mm Hub Socket until the hole (that you removed the plastic plug from) is aligned with the first adjustment point behind the disk, it looks like this

(Left side. Right side will be upside down to this)

There are two adjustment points.

One is the 4mm Hex bolt(Allen Key) (circled Yellow).

The other is the ratchet (hidden at the bottom, circled in Red)

Rotate the disk again until the hole is in line with the ratchet adjuster (Red)

(The direction of rotation must always be forward).

Using the flat blade screwdriver through the hole, tighten the ratchet until it is tight. (move in the direction AWAY from the EPB spring to release and Towards to tighten up)

Then take your torque wrench and 32mm socket and set it for between 40 and 90Nm.

Place it on the hub nut and if the disk turns, you need to add one click at a time to the ratchet with the screwdriver until the required torque is reached (I set my torque to 60Nm for this exercise).

When the Torque is reached, then you need to release the ratchet by exactly 8 clicks

Finally, rotate the disk until the hole is in line with the Hex socket (Yellow) and undo this half a turn.

Gently tap the disk with a rubber faced mallet around the shoe area. This will release the tension and it should naturally move if it needs to.

Tighten the Hex socket back up to 6Nm. When that is completed (on both rear wheels), replace the plastic lug and re-fit the road wheels.

If they are new disks or pads, please complete How to Bed In New EPB Shoes

How to Bed in new EPB shoes

You need to bed in the EPB shoes either when you have changed the EPB shoes or you have changed the rear discs.

With the Engine running, press the brake pedal fully on and off 3 times.

On the third press, hold the brake pedal down.

With the brake pedal still in the down position, pull the EPB switch upwards 4 times and then downwards 3 times.

This must be completed within 10 seconds.

Your dash display will then show 'Park Brake Bedding Cycle Active' or something similar.

If it hasn't, then release the brake pedal and try again.

You need to ensure that you are on a clear piece of road or land as this procedure needs to be completed 10 times.

Drive at least 19mph and maximum of 29mph and then apply the EPB switch until you stop.

You then need to wait for 60 seconds or drive for 500metres (to allow the brakes to cool down) before repeating the process.

If you stop the engine or you drive over 30 MPH, the bedding in process will be cancelled.

At the end of the 10th time, the bedding in mode may automatically finish, or you should just drive more than 30mph or cycle the ignition.
 

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