Hard brake pedal in reverse
Sooo, on the weekend I was reversing a trailer down a boat ramp and got the hard pedal in reverse was quite a shock as ramp was steep and short and not wanting to stop without massive pressure on pedal.
Back to normal city driving and all good again but testing in a car park after a few short stabs of the brake in reverse hard pedal again.
I can sort of remember on last offroad trip getting a hard pedal going down a steep incline as well that was a bit scary. A few stabs and boost was lost. In city driving boost is good on first press.
So today I pulled the vacuum line off the booster and was able to suck out a small amount of oil.
Booster was new RRS spec replaced in 2022 has done about 80 k kms. I have the updated vacuum pipe work.
The previous booster at 14 years old failed to point there was no boost whatsoever but I didn’t notice this hard pedal previously.
In our 1991 80 series LC the brakes failed in the sense the pedal went slowly to floor. Not good when holding on a hill at the lights. Another stab would grab the brakes again. That was solved with a $50 master cylinder kit to replace the rubber cup seals on pistons that grab the fluid.
I’ll see in next few days if booster can hold pressure on multiple stabs with oil removed.
Test your car in a car park by applying a few quick stabs and see if you loose boost assistance by the third press. It may also be a failing vacuum pump potentially.