Brake Probs after refurbishment
Posted: Fri Oct 24, 2008 5:42 pm
Last Year the brake system was overhauled with new calipers and pads being fitted after a long time off road.
On the first drive home from the garage the brakes began to momentarily stick on, just a fraction longer than necessary. Braking wasn't "spectacular". I talked it over with the proprietor of the garage who thought this might be a sticky Master Cylinder and may resolve itself whilst the pads (Green Stuff) and new disks needed to bed in.
I only had the opportunity to do a couple of short runs near my house before I had to go back to work. In this time the problem of the sticky brakes was replaced by a very hard peddle and very poor brake effect. --- Very nearly caused an "Oh Sh*t!" moment as I narrowly avoided hitting my other car (acting as back-up during the trials) in a double whammy.
The car is fitted with a remote servo in the nose and the vacuum is taken from No. 4 manifold through ⅜" or ?" ID rubber hoses with a non-return valve situated on the engine bulkhead. These hoses are 20 years old at least and may be just past it?
I'm not particularly happy with the appearance of this routing/solution but I am happy to continue with it, if it will work.
I wonder however, if I could take the vacuum from the headlight system, i.e. the crossmember reservoir?
Is this unsafe or an error in principle? This would remove the need for the long run of hose from the rear and opposite side of the engine bay.
Hopefully somebody will be able to point me towards the culprit or the right direction to systematically check the system to identify/isolate the fault and at the same time guide me in the wisdom (or not) of my suggestion. I am accutely aware that Colin Chapman used a separate vacuum source in plus 2's and wonder why.
Regards
Barney
On the first drive home from the garage the brakes began to momentarily stick on, just a fraction longer than necessary. Braking wasn't "spectacular". I talked it over with the proprietor of the garage who thought this might be a sticky Master Cylinder and may resolve itself whilst the pads (Green Stuff) and new disks needed to bed in.
I only had the opportunity to do a couple of short runs near my house before I had to go back to work. In this time the problem of the sticky brakes was replaced by a very hard peddle and very poor brake effect. --- Very nearly caused an "Oh Sh*t!" moment as I narrowly avoided hitting my other car (acting as back-up during the trials) in a double whammy.
The car is fitted with a remote servo in the nose and the vacuum is taken from No. 4 manifold through ⅜" or ?" ID rubber hoses with a non-return valve situated on the engine bulkhead. These hoses are 20 years old at least and may be just past it?
I'm not particularly happy with the appearance of this routing/solution but I am happy to continue with it, if it will work.
I wonder however, if I could take the vacuum from the headlight system, i.e. the crossmember reservoir?
Is this unsafe or an error in principle? This would remove the need for the long run of hose from the rear and opposite side of the engine bay.
Hopefully somebody will be able to point me towards the culprit or the right direction to systematically check the system to identify/isolate the fault and at the same time guide me in the wisdom (or not) of my suggestion. I am accutely aware that Colin Chapman used a separate vacuum source in plus 2's and wonder why.
Regards
Barney