MkIndy7
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posted on 25/5/08 at 05:19 PM |
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Ar*sehole MOT Tester
What can be done to satisfy such a person.
My tin-top thats done about 3,000 miles since its last MOT has failed on:
Near side and offside (Blue) front poition lamp(s) incorrect colour
Nearside and Offside Macpherson strut has excessive movement in the upper support bearing assembley
Nearside and Offside (foot brake) rear brake recording little or no effort.
And basically I cannot see fault with any of the above components so how do you satisfy such a person.
The sidelights are pure perfect while LED bulbs (obviuously I can put old "yellow" bulbs in but why should I)
We've had to buy some spring compressors to check the strut bearings and there's noting at all wrong with them, we've just re-packed
them with grease and put them back on, the struts are rubber mounted to the turrets anyway so there will be some play and the rubbers are all in good
condition.
And the rear brakes I just don't think he was pressing on them hard enough, I've had the car up on axle stands with somebody pressing on
the brake pedal and I can put my full body weight jiggeling up and down on the alloys spokes and the wheel doesn't even slightly move.
Are there any tests i'm missing that I can do without having my own MOT test staion or any ideas how to get it to pass, other than cleaning up
the components he's mentioned so it looks like work has been done on them i'm out of ideas.
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britishtrident
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posted on 25/5/08 at 05:29 PM |
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Rear brakes sound like the hand brake cable make have been over tensioned stopping the rear brake working or if it has a load sensing valve that has
seized..
Macpherson strut mounting sound as if hey are Ok a lot of cars have a surprising ammount of free movement on them in droop.
No sympathy from me on the lighting Blue LED bulbs are pretty obvious fail they break road traffic laws that have been around as long as the car.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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stevec
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posted on 25/5/08 at 05:32 PM |
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What car is it? Some naturally have movement in the top strut mountings when they are unloaded/ jacked up, we discussed this at my MOT refresher
course. I believe the failure on the lights is justified.
Steve.
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MkIndy7
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posted on 25/5/08 at 05:37 PM |
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Huh the bulbs are Pure Brilliant white LED bulbs but for some reason he seems to think there Blue!
Its a Vauxhall Nova with an XE engine in so its quite front heavy, so it has V6 calibra front brakes so maybe thats why he thinks the rears
aren't doing anything as the fronts are so effective.
The handbrake works perfectlyso it isin't a friction material or drum problem and when we've been testing the rears they've worked
fine from our simple test of trying to turn the alloy spokes with as much weight as possible. any idea what other tests I could try for them?.
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SeaBass
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posted on 25/5/08 at 05:40 PM |
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mmm. I think the lights issue is an interesting one. Audi have started installing white LED running lights in the front of some of there vehicles but
I think they also have a tungsten side light bulb to comply with regulations. I guess you just need to swap them out and "comply".
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jollygreengiant
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posted on 25/5/08 at 05:50 PM |
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Play in the strut top mount could be in reality play in the strut inner support bearing. Heavier front brakes would put more strain on these bearings
as they are at a fulcrum/pivot point.
Beware of the Goldfish in the tulip mines. The ONLY defence against them is smoking peanut butter sandwiches.
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MkIndy7
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posted on 25/5/08 at 05:57 PM |
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quote: Originally posted by jollygreengiant
Play in the strut top mount could be in reality play in the strut inner support bearing. Heavier front brakes would put more strain on these bearings
as they are at a fulcrum/pivot point.
Wel that appears to be what he's suggesting, bu weve had the bearing out and it seems fine all the ball race is intact and it doesn't feel
gritty to turn or have much play in it.
The strut then mounts to the turret through a rubber mount that has 2 inverted metal cones at either side of the rubber, we've maybe got those
done up a little tighter now but there didn't appear to be any problem with the bearing or the condition of the rubber so hopefully just cleaing
it all up will satisfy him that its been changed.
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spaximus
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posted on 25/5/08 at 06:00 PM |
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The strut tops will be down to his interprutaion of the allowable play. The brakes on the rollers will iether work or not. ask to get a copy of the
brake test from him to have a look at. There will be something not right.
If you are unhappy ask for the details of the appeals process they must give you the details and be able to back up the fail reasons.
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jollygreengiant
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posted on 25/5/08 at 06:05 PM |
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quote: Originally posted by MkIndy7
quote: Originally posted by jollygreengiant
Play in the strut top mount could be in reality play in the strut inner support bearing. Heavier front brakes would put more strain on these bearings
as they are at a fulcrum/pivot point.
Wel that appears to be what he's suggesting, bu weve had the bearing out and it seems fine all the ball race is intact and it doesn't feel
gritty to turn or have much play in it.
The strut then mounts to the turret through a rubber mount that has 2 inverted metal cones at either side of the rubber, we've maybe got those
done up a little tighter now but there didn't appear to be any problem with the bearing or the condition of the rubber so hopefully just cleaing
it all up will satisfy him that its been changed.
If you have inspected the ball races in the strut INNER support bearings then you have also taken the actual damper unit completely to bits as it is
inside the sealed damper cartridge unit.
Beware of the Goldfish in the tulip mines. The ONLY defence against them is smoking peanut butter sandwiches.
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MkIndy7
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posted on 25/5/08 at 06:29 PM |
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Ah there is a difference then, I might have to ask the previous owner of the car how old they are.
I know since I re-built it its only done like 5,000 miles so there shouldn't be much wrong with it.
"ask to get a copy of the brake test from him to have a look at. There will be something not right"
Would anything show up tho if he's just not pressing the pedal hard enough?
For the SVA etc there is a pressure pad on the testers foot, don't think there is for the MOT and as both axels are tested independently it
wouldn't show up like that either.
I've read a little about the appeals procedure and that sound a complete farce!
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stuart_g
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posted on 25/5/08 at 06:40 PM |
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Why not go to a decent MOT testing station? If the bloke is an arse go elsewhere, there are plenty of other testing stations.
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britishtrident
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posted on 25/5/08 at 06:46 PM |
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quote: Originally posted by MkIndy7
snip
The handbrake works perfectlyso it isin't a friction material or drum problem and when we've been testing the rears they've worked
fine from our simple test of trying to turn the alloy spokes with as much weight as possible. any idea what other tests I could try for them?.
The handbrake working is nothing to do with foot brake efficiency -- if the brakes are (wrongly) adjusted by tensioning the handbrake cable rather
than by running up the self-adjusters it can stop the foot brake being fully effective.
(1) Slacken back the brake cables
(2) Clean out the drums and check the wheel cylinders & shoes.
(3) Check the self-adjusters are free and run the adjusters up so the shoes just clear the drums.
(4) re-fit the drums
(5) Pump the pedal a few times.
(6) Adjust handbrake cable so the handbrake is fully applied at 50% of the hanbrake lever movement.
If that dosen't work look to a hydraulic problem - pressure regulator vavle.
[Edited on 25/5/08 by britishtrident]
[Edited on 25/5/08 by britishtrident]
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TimC
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posted on 25/5/08 at 07:23 PM |
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I can sympathise. I had my tin top tested the week before last. It failed on no brake lights and 'badly damaged' front flexis. I only
got the chance to look this weekend - I've had a lift to work and I've been very busy with work and Uni stuff.
I can't find a problem with either.
I'll be calling the tester on Tuesday to discuss.
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MkIndy7
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posted on 25/5/08 at 08:08 PM |
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Thanks for the pointers BritishTrident I know the Handbrake has nothing to do with the Hydraulic side of the brakes which the tester is suggesting is
at fault but just thought it proved that the friction material was fine and that the adjusters etc aren't stuck.
When I apply the Foot brake and get somebody to try their hardest to turn the wheels then they cannot, even by putting their fully bodyweight on it.
I'm not sure how the Nova or Vauxhall brake systems work with regards to the bias but its never been a problem before, It definately has over
sized front calipers and maybe the original sized M/C you can push the pedal down about 1" but then after that the pedal is quite firm and rock
solid any further down, on the road you can have a little dab at them and there pretty effective, push them in anger and it feels like your going to
go through the screen!, and the little give in the pedal isisn't air as i've blead them loads of times.
I would have thought with 680kg upfront and 320kg at the rear they wouldn't be doing much anyway
Oh and as for taking it to another MOT test station doesn't that mean shelling out another £45! I'm sure they've got much worse
since the computerised MOT's and they read your last failure points or advisorys.
[Edited on 25/5/08 by MkIndy7]
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MkIndy7
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posted on 26/5/08 at 12:22 PM |
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Well we've had a look at the rear brakes and there perfectly fine, all the adjusters are free etc.
Just taken it to another garage for them to check the rear brakes and they say there working fine but its to do with the calculations:
From what we understand now its between the Total weight of the car and the front braking capacity compared to the rear, but this doesn't take
into consideration weight imbablance from front to rear, so if there was more weight in the rear of the car the rear would stop better.
So it was suggested all we could do was to remove any lip on the break drum so the brake shoese are out as far as possible in the first place.. or to
send it we some bags of and in the back next time ... B&Q here I come!.
As for the sidelights there back looking like Yellow candles instead of the nice white they were before
And i'll just have to hope the suspension tops pass ok or it would probably need new dampers
I get the feeling he was just having a bad day tho ![](/images//smilies/mad.gif)
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RickRick
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posted on 27/5/08 at 07:34 PM |
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my fiesta has passed at 4 garages over the last 6 years every time with WHITE led bulbs for side lights, and there obviously led's are you can
see the 6 individual leds in each side
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