Brake vacume nightmares.

Nissan Navara Forum

Help Support Nissan Navara Forum:

tweak'e

Moderator
Staff member
Joined
Oct 21, 2008
Messages
5,229
Reaction score
178
Location
New Zealand
Test drove this morning and brakes are locked on ,Siri reckons it,s the master cylinder ,just ordered another one from da wreckers
do not get braking parts from wreckers. last thing you want is brake failure at speed due to a master cylinder thats been sitting around going rusty.
easy enough to get new ones.
 

Horatius

Misanthrope
Joined
Sep 30, 2016
Messages
705
Reaction score
185
Location
Aus
So all one way valves in brake line go so vacume can be sucked into engine ,correct.as that is the way I put em on yesterday.
Correct. Air should be able to flow towards the pump.

This manual, while not specifically for your model, nevertheless gives some ideas about symptoms and testing procedures for brake components.
 
Joined
Mar 25, 2022
Messages
27
Reaction score
0
Mine has a valve in the hose that attaches to the booster as well and yes I directed the flow to the pump ,heard a sucky gurgle noise from master when car was off y'day low n behold brakes want to stay on today.I get another master cylinder tommorrow.Try that out for size.
 
Joined
Mar 25, 2022
Messages
27
Reaction score
0
do not get braking parts from wreckers. last thing you want is brake failure at speed due to a master cylinder thats been sitting around going rusty.
easy enough to get new ones.
Not around here ,can't get new booster ,only from Nissan $980 didn't ever bother with master.
Yet you are right lots of wreckers have been sending me shit parts.
 

Horatius

Misanthrope
Joined
Sep 30, 2016
Messages
705
Reaction score
185
Location
Aus
afaik there is only check valve on the vacuum system and thats at the vacuum pump and air should flow to the pump.
Not sure about other check valves, but I know there's one in the hose near where it joins to the booster itself (at least on mine there is).
 
Joined
Mar 25, 2022
Messages
27
Reaction score
0
Thinking of digging beyond the vacume pump something tells me that it,s a deeper problem as the case just goes onto an elongated cog that pokes out of the front casing whereas in a D40 that same elongated cog ,goes onto another cog that can be damaged ,Mr logics telling me if I dig to where the other cog is I,ll more than likely find a damaged cog and the source of my problem digging deep.
 

Latest posts

Top