Any lorry mechanic clever types here? Question....

[Perissa]

I have a Leyland Roadrunner 813 with a Cummins engine - I'm told this is good! Its an E reg, old but a very good reliable runner. It is fully serviced every year.

Anyway every year we have the same problem getting it through its plating. If its fails it fails on the front brakes by 1 or 2%. Today it failed by 1%.

Its had new pads, the calipers(sp?) taken apart, new brake fluid etc etc. My mechanic is an old school Mr Fix Anything type and he is flummoxed. It stops on a dime if you slam the brakes on.

Anyone got any idea as to why and what we can do?

 

[Beausmate]

I'm guessing it has drum brakes all round? What condition are the brake drums (or discs if it has those) in? If I remember correctly, the front and rear brakes are tested separately, so stopping on the road might be good due to the rear brakes being effective enough to make up the difference.

Take it to a different test station?

 

[Iwantcandy]

According to OH it probably needs the brakes 'bedding in' if discs just been replaced. Ideally take it on a run with lots of braking!