'88 5KSQ Brake Master Cylinder Replacement

[Bernard Littau]

> I've pretty much decided to replace the brake master cylinder on my '88
> 5KSQ.  Any BTDTs on this job?
>

BTDT.  Easy job.  Leave the servo in place.

The instructions that came with the MC had me do a pre-install bleed to get
the air out.  The MC included plastic fittings and hoses to recirculate the
pumped fluid back to the top.  This seems like a good thing to do, and I
saved the fittings and have used them on other MC jobs, too.

The biggest problem I had was with the hydraulic lines coming out of the MC.
One flare nut was very frozen.  You may need good quality tight wrenches to
get those off.  My $10 Flare Nut Wrench Set was a disaster.  A good tight
open end wrench did the trick.

The second problem was getting the tank off the old MC.  The tank is held in
by rubber bushings, and they harden with age.  I was reluctant to press too
hard on the plastic tank with tools and leverage off the MC.  I used the
secure the old MC in a vice and pull for all you are worth near one of the
bushing with fingers technique.  I worked both ports out this way.  I
suspect the tank is quite sturdy and could handle a large flat screwdriver
or small pry bar near the ports, but I did not test this.

I purchased my MC from www.thepartsconnection.com

Best,

Bernard Littau
Woodinville, WA
'88 5ktq