K 3500 Truck 4WD V8-454 7.4L VIN J SFI (1996)
F. Wait 15 seconds.
G. Repeat this sequence, including the 1 5-second wait, until all air is purged from the bore.
H. After all air has been removed from the forward connection, repeat this procedure for the rear pipe.
3. If the BPMV of the 4WAL system is replaced or suspected to have air trapped inside, it must be bled next.
4. Bleed each wheel in the following sequence:
A. Right rear.
B. Left rear.
C. Right front
D. Left front
5. Attach a hose to the wheel cylinder/caliper bleeder valve.
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Immerse the opposite end of the hose into a container partially filled with clean brake fluid.
6. Slowly apply the brake pedal one time and hold.
7. Loosen the bleeder valve to purge the air from the wheel cylinder/caliper.
8. Tighten the bleeder valve to 13 Nm ( 110 lb. in. ) and slowly release the pedal.
9. Wait 15 seconds.
10. Repeat this sequence, including the 15-second wait until all air is purged from the wheel cylinder/caliper.
11. Repeat steps 5 through 10 at each wheel until the system is bled.
12. Check the brake pedal for "sponginess" and the brake warning lamp for an indication of unbalanced pressure. Repeat the bleeding procedure to
correct either of these conditions.
