Main dealer monkeys don't like imports do they

 

not me personally it's i.m, a scoobs a scoob at the end of the day i'll work on any of them but with all the stuff at work it's easier to work on uk spec cars

 

this is true-there is people where i work been doing job for 40 years-and in that time they have successfully learnt nought-they are as brainless now as day they must have started-quite an achievement when u think about it lmao

 

[QUOTE=NotoriousREV]When is there ever a 20mph difference between wheel speeds on the road (unless you're locked up under braking?)

Most modern rolling road brake testers work at 5-8mph, with the machine at my work operating at 3-5mph (just a "cheap and nasty" MOT set-up that cost approx 100K for the equipment).

 

So? its not really conclusive then?

The idea that if damage is done then get the garage to rectify it is, in my opinion, a mad statement ....................... I would MUCH rather they just do not damage it in the first place!

I think I will err on the side of caution and tell whoever NOT to use a rolling road and I will keep an eye on them too!

Pete

 

like it was mentioned in a previous post about locking the wheels, hard i know due to abs but if you lock the wheels you must of knackered your centre diff......true or false?

 

I was told by an MOT tester today that it is safe to use the rollers as the Impreeza is not a true permanent 4WD, as at low speed the coupling can disengauge. I am not a techie or experienced enough to pass judgement but find it strange that a 4WD car can be tested as a 2WD, surly goes against the whole design of the car.

If a car was tested on the rollers and a diff fault emerged, up to what time period would u be able to go back to the MOT station? 2 days, 2 weeks?

 

One tester asked me to remove the fuse to disengage the AWD - WTF???

My current tester has a Scoob of his own so I'm more than happy to let him road test mine.

 

TBH the tapley meter method of testing for brake efficiency is very poor,so i can see why testers quickly spin the wheels up in the brake rollers. (mark ex authorised examiner).

 

Thats because the fool thought that it was similar to a 4WD Cavalier/Calibre !

 

actually on autos there is a fuse you can put in the box to turn it to 2wd so the "fool" was correct in a way

 

as per my previous post then if you lock the wheels do you knacker the diff or not?

 

Just play safe ask for the brake test to be carried out on the road with the meter and go with the tester.JOB DONE. JASON

 

I don't care how much the equipment cost, the fact is permanent 4wd vehicles and those with lsd's (and my Scoob has both) should not be tested on rollers, regardless of speed. I don't expect to have to tell the MOT tester this, either, although I do point out that it's 4 wheel drive, just in case.

I'm sure it does work satisfactorily most of the time, but it adds stress to the drivetrain that it wouldn't see on the road and it's easy to be unconcerened when it's not your car being worked on and the results may not manifest thmselves for a few thousand miles.