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Jul 27, 2012 9:03 pm
Jul 27, 2012 9:03 pm
Subject: Re: Handbrake on DB 3ltr Lagonda
Hi Peter,
My cars are 2.6 and I never had this symptom so I cannot point you to any trick. Have you performed the adjustment of the rear shoes which should automatically adjust the hand brake correctly? I.e. turn the micram adjuster clockwise until the shoes are in full contact with the drum and then back it off one click. This is best done with each side jacked up in turn to rotate the wheel / half-shaft / drum.
Does the 3Litre have an inspection flap in the boot floor to view / maintain the differential / rear brakes? If so, having a friend operate the handbrake while you look at the two levers attached to the wheel cylinders might provide a clue.
The hand brake cable does have an adjusting nut but that is factory set. Unless that has been disturbed during a rebuild this shouldn't be the cause. Severe binding and distortion of the cable might be a rare cause - I doubt it ... nevertheless don't forget the oil nipple half way along the cable!
Finally, a rolling road brake test should show what is going on. It's possible to have a good feel on the foot brake pedal but less than normal efficiency of the rear brakes due to some issue with shoes / drums / locating or pull-off springs.
Regards, Martin
Hi Peter,
My cars are 2.6 and I never had this symptom so I cannot point you to any trick. Have you performed the adjustment of the rear shoes which should automatically adjust the hand brake correctly? I.e. turn the micram adjuster clockwise until the shoes are in full contact with the drum and then back it off one click. This is best done with each side jacked up in turn to rotate the wheel / half-shaft / drum.
Does the 3Litre have an inspection flap in the boot floor to view / maintain the differential / rear brakes? If so, having a friend operate the handbrake while you look at the two levers attached to the wheel cylinders might provide a clue.
The hand brake cable does have an adjusting nut but that is factory set. Unless that has been disturbed during a rebuild this shouldn't be the cause. Severe binding and distortion of the cable might be a rare cause - I doubt it ... nevertheless don't forget the oil nipple half way along the cable!
Finally, a rolling road brake test should show what is going on. It's possible to have a good feel on the foot brake pedal but less than normal efficiency of the rear brakes due to some issue with shoes / drums / locating or pull-off springs.
Regards, Martin