Brake saga continues!
Okay, so after all the work for the MOT which was originally on Dec 18th! - I did the welding, the poor window washer supply (that's laugh!), the trackrod end, the loose (and danger to the public!) inner wing panel, and then got onto the brakes. You may remember my earlier post on the matter. Well...
It's a standard 88 series111 2 ¼ diesel with twin brakes system and servo
the failures were:
pulling to left
unbalanced brakes
spongy brakes/excessive brake travel
no servo assistance
Work done is as follows:
new wheel cylinders all round
new brake pipes where needed
new shoes/spings all round (all correctly fitted)
adjusters freed up (what a nightmare) and adjusted properly
system bled god knows how many times using conventional and reverse feed methods.
Landy jacked right up in the air, brake pedal jammed down, res cap removed and left over night
No leaks anywhere after over night under-pressure test
result:
brakes better than it did when it passed the previous MOT with no mention of brakes problems.
Did the pump brakes with res cap off and watch fluid rise and fall test no fluid drop on brake down stroke so assume Master cylinder is not leaking past seals?
But some questions:
If you remove the rubber pipe from the servo, how much suction should you expect at the end of the pipe?
If you do the pump up brakes with engine off hold brake down and start engine test and the pedal DOESN'T drop a fraction, is this really a problem? Is it a fail issue? Isn't the servo simply there to save your leg?
And at what speed is it reasonable to check for pulling to the side? If I do it at sub-30mph and brake hard but normally I.E: Not so hard that it means i was driving a) too fast anyway, b) without due attention to the road/conditions/traffic/pedestrians Etc. it doesn't pull at all. If I leather it and stand on the brakes as if I'd just spotted £1million in gold on the curbside with a card saying FREE TO GOOD HOME there is a VERY slight pull. Is this okay or should I tinker some more?
Pedal travel? How far is good? Originally it was almost at full travel admittedly. Having said that I have never had a problem stopping her. Now I have travel of about half way on a FIRST push down, and a tiny improvement on the second? More air to remove or is halfway okay?
I think it's fine now but they've got me to the point where I don't know anymore and am questioning everything. Ideas and thoughts will be appreciated.
cheers
Andy
Okay, so after all the work for the MOT which was originally on Dec 18th! - I did the welding, the poor window washer supply (that's laugh!), the trackrod end, the loose (and danger to the public!) inner wing panel, and then got onto the brakes. You may remember my earlier post on the matter. Well...
It's a standard 88 series111 2 ¼ diesel with twin brakes system and servo
the failures were:
pulling to left
unbalanced brakes
spongy brakes/excessive brake travel
no servo assistance
Work done is as follows:
new wheel cylinders all round
new brake pipes where needed
new shoes/spings all round (all correctly fitted)
adjusters freed up (what a nightmare) and adjusted properly
system bled god knows how many times using conventional and reverse feed methods.
Landy jacked right up in the air, brake pedal jammed down, res cap removed and left over night
No leaks anywhere after over night under-pressure test
result:
brakes better than it did when it passed the previous MOT with no mention of brakes problems.
Did the pump brakes with res cap off and watch fluid rise and fall test no fluid drop on brake down stroke so assume Master cylinder is not leaking past seals?
But some questions:
If you remove the rubber pipe from the servo, how much suction should you expect at the end of the pipe?
If you do the pump up brakes with engine off hold brake down and start engine test and the pedal DOESN'T drop a fraction, is this really a problem? Is it a fail issue? Isn't the servo simply there to save your leg?
And at what speed is it reasonable to check for pulling to the side? If I do it at sub-30mph and brake hard but normally I.E: Not so hard that it means i was driving a) too fast anyway, b) without due attention to the road/conditions/traffic/pedestrians Etc. it doesn't pull at all. If I leather it and stand on the brakes as if I'd just spotted £1million in gold on the curbside with a card saying FREE TO GOOD HOME there is a VERY slight pull. Is this okay or should I tinker some more?
Pedal travel? How far is good? Originally it was almost at full travel admittedly. Having said that I have never had a problem stopping her. Now I have travel of about half way on a FIRST push down, and a tiny improvement on the second? More air to remove or is halfway okay?
I think it's fine now but they've got me to the point where I don't know anymore and am questioning everything. Ideas and thoughts will be appreciated.
cheers
Andy
