K 1500 Truck 4WD V8-350 5.7L (1986)
FIGURE 3 - VACUUM HOSES AND CHECK VALVE INSTALL.
8.
Route hose under map sensor and wiring harness and over valve rocker cover. Carefully route hose over distributor and clip (4) in 2 places on
vertical surface of cowl above distributor (see Figure No. 3). Adjust hose carefully so it will not kink or rub against cowl or other parts with engine
movements.
9.
It may be necessary to rotate the tee in the inlet manifold to help route hose properly.
10.
Install new grommet (2) and check valve (1) in booster. Some units may require loosening the master cylinder to install the check valve.
11.
Attach 15/32 ID vacuum hose (3) to check valve.
12.
Reinstall air cleaner.
13.
Reconnect battery ground cable.
Notice:
Start engine and check for proper braking action before road testing.
Labor time to perform this procedure is:
.7 hr. - for vehicles with 5.7L engine (RPO L05 and LT9)
.9 hr. - for vehicles with 7.4L engine (RPO L19 and E8)
In both cases, use Labor Operation number T7515.
Parts are currently available from GMSPO.
Parts List
Quantity
Part Number
Power Brake Kit
1
15624666
Notice:
Kit Consists of:
