Brake Vacuum Booster
Hello All,
I just replaced my vacuum booster and I have gone from super hard brakes to super soft brakes. Not sure if its just the transition, but it almost feels like I have too much travel before I get pressure. Plus when I do get pressure its seems very soft, but I do stop. When I come to a full stop I can apply more pressure and there is still more travel before it reaches the floor. I believe It's my fault, I put the shim from the old on the new thinking that it was needed. I've also found information about adjusting the push rod in the booster, which I didn't do. Just looking for some advice on how I should remedy my issue. Thanks |
Did you open the hydraulic system at all to make the swap, or just unbolt the master cyl and set it aside?
There should be a rod you can adjust behind the master cyl. Sounds like it is adjusted too short. |
I got lucky and didn't need to open the brake lines to move the master cylinder out of the way. I even checked the pedal to see if there was air in the lines. They don't gain any pressure when I pump them, so I don't think they have air in them.
Do you or anyone know what the length needed to be or how many turns I needed to let out the push rod or is it more like trial and error? Thanks |
Originally Posted by raycergurl87
(Post 2286735)
Hello All,
I've also found information about adjusting the push rod in the booster, which I didn't do. sometimes we miss the simple things. |
Originally Posted by PatriotGT
(Post 2287880)
not trying to be a smart a$$, but did you go back and read it?
sometimes we miss the simple things. |
Originally Posted by PatriotGT
(Post 2287880)
not trying to be a smart a$$, but did you go back and read it?
sometimes we miss the simple things. In my original post, I didn't explain very well. When checking a manual on my vehicle is stated that the booster shouldn't need adjustment and that it would have already been adjusted by the manufacturer, hence why I didn't adjust it. I can see that now that you can't always trust everything you read. |
Ive never had to adjust one in all my years unless mix matching parts.
|
Originally Posted by raycergurl87
(Post 2288103)
In my original post, I didn't explain very well. When checking a manual on my vehicle is stated that the booster shouldn't need adjustment and that it would have already been adjusted by the manufacturer, hence why I didn't adjust it. I can see that now that you can't always trust everything you read.
|
Originally Posted by freegdr
(Post 2288115)
Ive never had to adjust one in all my years unless mix matching parts.
|
Originally Posted by cruiser54
(Post 2288139)
You've been lucky or accept sub-standard pedal travel.
|
Originally Posted by raycergurl87
(Post 2288103)
I When checking a manual on my vehicle is stated that the booster shouldn't need adjustment and that it would have already been adjusted by the manufacturer,
You could measure the length of the old rod and set the new one to match, else it's trial and error. |
Originally Posted by freegdr
(Post 2288200)
Really even working automotive for a living most of the time low pedals cause rears are not adjusting them selves anymore .
I fixed 2 F-350s and a coupla XJs by adjusting the booster rod. Check it out some time. Easy to do. Wonder why the OP's instructions advised adjusting? |
True the pride and quality of aftermarket parts aint there no more for sure.
|
Originally Posted by cruiser54
(Post 2288247)
ther's no guarantee Wunhung Lo didn't screw up.
|
Originally Posted by Radi
(Post 2288262)
Wunhung insists that quality is job #1 and his feelings are hurt. :icon_cheesygrin:
I remember his book "Ruptured Chinaman" sorry |
All times are GMT -5. The time now is 07:16 PM. |
© 2024 MH Sub I, LLC dba Internet Brands