Madmustang
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I refer you to post number 16
Vibration into seats
- Thread starter PetrVIVIVI
- Start date
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I refer you to post number 16
The prop shafts are balanced individually, so the position on the VCU, IRD and rear diff are irrelevant.
Are you 100% sure the VCU is a quality reverb? If there less fluid than there should be, the unit will run out of balance.
PetrVIVIVI
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I hope so. I paid for reconditioned one and give them my old one. They have a good recomendations from local forum members.
There was really big diference right after replacement especialy on full left/right wheel drive (really smooth) but after 100 km vibration came alive so I am starting to investigate what could be wrong and then I discovered some wrongly installed bearings etc. so I already ordered quality one and I will replace it this weekend myself.
Split the shafts and bearings off the VCU and do a simple balance check of the VCU. You can do this by supporting it at each end on the bearing journals, with a pair of horizontal supports. If the VCU is out of balance, it will favour stopping in one place, if it is rolled along the supports.
PetrVIVIVI
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Hi. I had a problem to remove one old bearing so I had to cut it off. Then I discovered that my reconditioned VCU have some scars on both end (not done by me). Hope that this is not a big deal.
Then I placed new bearing and washer on VCU, put a little bit of moly grease on it and place front and back driveshafts back. I leave old washer on driveshafts as they look ok to me. I put new U shaped spacer as the old one was slightly curved. I do not have a torque wrench so I tighten all bolts hard enough.
Test drive was great. No vibration at 60/90 km/h as it was in the past. I need to test bigger speed soon. I have to slightly reseat one bearing, push the inner washer towards the VCU bearing and double check all bolts but overall I am very satisfied.
I must say that in mondo mode freelander is much more quiet and smoother to drive.
Then I placed new bearing and washer on VCU, put a little bit of moly grease on it and place front and back driveshafts back. I leave old washer on driveshafts as they look ok to me. I put new U shaped spacer as the old one was slightly curved. I do not have a torque wrench so I tighten all bolts hard enough.
Test drive was great. No vibration at 60/90 km/h as it was in the past. I need to test bigger speed soon. I have to slightly reseat one bearing, push the inner washer towards the VCU bearing and double check all bolts but overall I am very satisfied.
I must say that in mondo mode freelander is much more quiet and smoother to drive.
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A correctly set-up VCU shouldn't make any difference to the way it drives. If the car is smoother in FWD, then something still isn't right with the drive train.
PetrVIVIVI
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I reseat one bearing bolt and push washer a little bit to bearing center. After 150km on highway I must say it looks ok. I tried to go up to 170km/h. Car is noisy as hell in this speed but no severe vibration. I have new 225/55 R17 MICHELIN LATITUDE CROSS 101H XL tires and reviews say that they are a bit noisy.
Only one thing remains. Front left wheel is so hot that I can barely touch it. Other 3 wheels are almost cold. What could it be? There is no vibrations during breaking at all.
Only one thing remains. Front left wheel is so hot that I can barely touch it. Other 3 wheels are almost cold. What could it be? There is no vibrations during breaking at all.
Hippo
Lord Hippo
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The wheel is probably getting hot because the brake is being partually applied. As said above this can be caused by the pins not sliding or the caliper piston. You will need to take the wheel off, and look at the brakes. You will need to check the brake parts are moving freely by undoing the parts and checking them. Also make sure the brake pad is wearing equally and not diagonal across the pad. Compare the pad thickness to the good brake on the other wheel on the other side.
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As Hippo said.
