Any MOT testers on here?

[E55BOF]

Deleted

 

[E55BOF]

Surely the parking brake efficiency is tested with the transmission in N, just like any other emergency braking system on an automatic car?

 

[ALFAitalia]

Drive it onto the rollers....test the front brakes by powering up the rollers with a remote control (in neutral) and pushing the brakes several times, engine running of course, looking for smoothness and even-ness of braking side to side....then push it down hard enough to stop the rollers ...noting reading
Drive forward...test the rear brakes in the same way and then test the handbrake......if it's an ALFA....try again and again until your handbrake creeps over the pass mark! The percent is not that important.....exactly the same brakes on different weight cars will give different results. All tests are done in neutral....the rollers age powered by electricity.....not the car.
Four wheel drive cars can't be tested on the rollers so it's done on a short road test using a Tapley meter....a primitive device that is sat in the car and measures braking force by tilting forward under braking.....but cars with softer spring and more front dive get better readings!

Note....I've not been an official tester for over 30 years....so things have probably changed a bit!

 

[Spider10]

Im with you on all the above but i cannot remember seeing a brakes in test mode message ever before

 

[Wolfie1]

Transmission is in neutral, traction control turned off and when the rear brakes are on the rollers both are started at the same time for the parking brake testing, you wait a few seconds for a message to come to say test mode or parking brake fault or simply the brake warning light to come on then the parking brake it tested, each manufacturer has there own message

 

[ernie]

Drive it onto the rollers....test the front brakes by powering up the rollers with a remote control (in neutral) and pushing the brakes several times, engine running of course, looking for smoothness and even-ness of braking side to side....then push it down hard enough to stop the rollers ...noting reading
Drive forward...test the rear brakes in the same way and then test the handbrake......if it's an ALFA....try again and again until your handbrake creeps over the pass mark! The percent is not that important.....exactly the same brakes on different weight cars will give different results. All tests are done in neutral....the rollers age powered by electricity.....not the car.
Four wheel drive cars can't be tested on the rollers so it's done on a short road test using a Tapley meter....a primitive device that is sat in the car and measures braking force by tilting forward under braking.....but cars with softer spring and more front dive get better readings!

Note....I've not been an official tester for over 30 years....so things have probably changed a bit!

Back in the day, one of our local testers used a gallon can of engine oil to test the brakes...end-wise to test the footbrake, side-wise to test the handbrake. If the can toppled the brakes passed. How things have progressed!

Ernie