Wheel bearings

[dukeenfield]

Hi,I'm taking car for MOT next week and I thought I would tighten up front wheel bearings as they had quite a lot of play in.Do they normaly have a little bit of play in?
The Haynes Cortina book says tighten up to 27lds and turn wheel as you do it and turn back 90 degrees,I have tried this and they still seem to have quite a lot of play in,so I just turn them back a little bit,so the wheel just spin freely and they only have a small amount of play in now.

[rus wood]

Don't tighten them up too far. I did and I s**gged the bearings, two hubs and an upright.
The hub is attached to the brake disk and expands faster than the stub-axle when things heat up. This locks the roller bearings.
They need some free play.
Photocopy the manual and take it down to the MOT with you, if the tester fails them show him the manual.
Once they understand they will pass it.
Russ

[19560]

rus wood said:

They need some free play. Photocopy the manual and take it down to the MOT with you, if the tester fails them show him the manual. Once they understand they will pass it.

Lets face it though, Cortina bearings used 1961? until 1980something. If he can't understand those bearings you're both in trouble.

[paul gotts]

The TVR manual (cribbed from Ford) actually says tighten to 27lbft whilst rotating hub anticlockwise. Then slacken the nut back until you have endfloat of 0.001 - 0.003 inch. How the hell you can check that with everything assembled is beyond me, but I always make sure that the hub can spin freely, which it wont until you back of the nut from 27lbft.

[rus wood]

It's not the bearings they don't understand it's the hub assembly. The Cortina never had anything so big with differential expansion rates.

You are supposed to measure with a dial gauge.

Magnetic clamp on the disk and a dial gauge on the end of the stub axle then move back and forth. I can't draw a diagram on this forum but the Haynes Granada manual shows it I think.

Russ

[FrenchTVR]

If you're that worried, tighten them up, take it for it's MOT and then re-adjust them as per the book.
Everybody is happy and you don't shag the bearings etc.

[rev-erend]

The bearings are needle rooler bearings and don't need to be very tight at all.

I found just very lightly tightning was enough.

As there is a split pin - this largely dictates exactly how much you can tighten anyway.

Any mot place of garage will be very fimiliar with the
cortina/granada setup..

[dukeenfield]

Thanks every body for your help,I will probley loosen off a very little bit more and hope for the best.