Question about 1995 Nissan Pathfinder

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BRAKES DON'T GRAB FIRMLY

I have a Nissan Mistral, model 1995, Diesel Engine TD27.
Th engine recently suffered from over-heating and I had to overhaul the it.

The brakes were okay before the engine overhaul.
But immediately after the engine overhaul, the brake pedal became too hard to press and even after pressing it completely down to the floor, the brakes grip loosely.
What I have also realized is that after parking the whole night, the brake pedal is usually soft when pressed in the morning and the brakes grab normally. But this happens only that one time and then the pedal hardens on subsequent pressing.

I remember that after the engine overhaul the car had water leakage from one of the radiator tubes - due to damage on the tube. It was late in the night so the mechanic cut off a short piece from the tube connecting the alternator to the servo (brake booster) and used it to replace the leaking radiator tube.
So the connection between the alternator and the servo is still there, except that the connecting tube is shorter.

What is the cause of my braking problem?

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Well on the alternator there is a pipe connecting to it which in it oil flow to lubricate it ,check for that,one test you can do also,is take out the hose from the servo,then start the engine ,now by then put your thumb on the top of the hole of the hose,you will feel your thumb aspirated by the hose,if not you know the problem come from here,what you have to do if so ,you must change the alternator,the part behind the alternator is not producing the vaccum .Hope that help you.

Posted on Jan 01, 2010

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Posted on Jan 02, 2017

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