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MG TD TF 1500 - Reasonable Brake Fluid Loss

I recently had a near catastrophic brake loss ( in earlier thread). On inspection the master was empty, refilled and pedal came right back. Have pumped and inspected no apparent leaks. I am more familiar with late model rake masters with larger capacities. Is it reasonable that normal (low) rake wear and possible imperceivable weep could empty a cylinder in ~ 2 years +. If so I'll just e more attentive. Bottom line is this amount of fluid disappearance ( no evidence of leak) normal
Jon Levine

jon, i have not experienced this. in my experience a whole master cylinder resevoir of fluid is a lot of fluid to lose over a two year period. just my experience. regards, tp
tom peterson

Jon, it's more likely that the fluid is leaking out of a wheel cylinder. You should remove all the brake drums and inspect for leaks. Without a leak the fluid should not disappear from the master cylinder.

Cheers,

Paul.
Paul van Gool

Jon - Over a 25 year period (using silicone fluid) I have not lost any brake fluid. Cars with drum brakes will only loose brake fluid if there is a leak somewhere. Modern cars experience fluid drop (not fluid loss) in the master cylinder due to brake pad wear on the disk brakes because the pistons in the calipers cylinders. As wear on the pads occur, the pistons move further out in the caliper since there is no spring to retract the pads as there are on the shoes of drum brakes. I would look very closely at the actuating rod between the brake pedal and the master cylinder to see if there is any leakage around it that would just drip on the ground rather than show up on the edges of the ties as a leaking wheel cylinder will. Also inspect all of the brake lines for any leaks caused by rubbing somewhere. Cheers - dave
David DuBois

This thread was discussed on 24/07/2008

MG TD TF 1500 index

This thread is from the archive. The Live MG TD TF 1500 BBS is active now.