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Brake servo alternatives....?

Posted: Fri Feb 10, 2023 2:16 am
by ChileBob
Seems I only post here when I break my car....sorry about that :D

The brake servo has quit, no engine power to the brakes only a loud hissing noise when the pedal is pressed...as they say here in the colonies 'no bueno' which is Spanish for 'knackered'.

Trying to find a replacement in Santiago has proven impossible.

Hopefully a servo+cylinder from a different car will fit? Anyone done that ? Its a 1991 SJ413

Remaining alternatives are 'import one from the other side of the planet', 'a dodgy looking guy who says he can rebuild it' or start searching breakers yards.

In other news, my trusty SJ has been in the desert, up a mountain, on the beach & I've been catching up on maintenance that should've been done by previous owners. New wheel bearings, brakes, there's a new clutch to go in soon, fixed the winch....

Re: Brake servo alternatives....?

Posted: Fri Feb 10, 2023 11:55 am
by timwilks13
Is it definitely the servo itself? I'd be checking the vacuum lines to and from the servo for cracks/splits etc and check you don't have a vacuum leak elsewhere?

Re: Brake servo alternatives....?

Posted: Sat Feb 11, 2023 2:09 pm
by mike harris
If helps and your car is a Japan made car lots of jam servo made by Asin have the same stud pattern, Subaru is probs best bet

Re: Brake servo alternatives....?

Posted: Mon Feb 13, 2023 10:23 pm
by ScottieJ
On my LWB I’ve fitted an XL7 brake servo and cylinder. It did take a little work but it wasn’t too bad.

Any vitara or GV one can be made to fit but some have 3-4 outlets.

The XL7 has ABS so the cylinder only has 2 outlets.

Re: Brake servo alternatives....?

Posted: Mon Feb 20, 2023 8:10 pm
by ChileBob
timwilks13 wrote:
Fri Feb 10, 2023 11:55 am
Is it definitely the servo itself? I'd be checking the vacuum lines to and from the servo for cracks/splits etc and check you don't have a vacuum leak elsewhere?
Yep, its definitely the servo. I unhooked the line to the servo, plugged it and the loud sucking sound when pressing the brake disappeared. Having said that the lines are a bit perished so will get changed out, master cylinder looks rough & may have a leak....gonna change it all out.

Re: Brake servo alternatives....?

Posted: Mon Feb 20, 2023 9:02 pm
by ChileBob
New servo+cylinder on its way from Delhi. (USD $124 incl shipping)

Some brake line tweaking needed 'cos its for a RHD & mine's a lefty, but sometimes it just is what it is.

Re: Brake servo alternatives....?

Posted: Wed Mar 08, 2023 1:17 pm
by ChileBob
Sorted, here's me fixing it - https://youtu.be/dmm8nP7rlNI