S10/T10 P/U 4WD V6-173 2.8L (1986)
FIGURE 3 - REMOVAL OF MASTER CYLINDER FROM BOOSTER
3.
Remove the master cylinder and proportioning valve assembly from the brake booster. Do not disconnect any brake lines. See Figure No. 3.
4.
Disconnect the vacuum tube, hose and filter assembly from the booster check valve and at the intake manifold. Discard this entire assembly along
with the manifold fitting.
FIGURE 4 - BRAKE BOOSTER ROD/PEDAL LINKAGE
5.
Disconnect the brake booster pushrod, refer to "Brake Pedal Replacement", Section 5 in the service manual. See Figure No. 4.
6.
Remove vacuum brake booster mounting nuts (inside vehicle).
7.
Remove vacuum brake booster from vehicle and discard.
8.
Remove old seal from cowl panel.
9.
With pipe thread sealant, Loctite P/N 1052080 or equivalent, on threads, install the brake pipe vacuum fitting in the intake manifold.