Hudson Hornet 1955 Technical & Service Manual page 190

12
1. Rubber Stop Washer
2. Steel Stop Washer
3. Compensating Diaphragm
4. Compensating Stem
FIGURE 20—Removal of Vacuum Hose,
Compensating Diaphragm, and Stem
1. Front Piston Plate
2. Gaskets
3. Diaphragm Assembly
4. Counter-Reaction Spring
5. Assembly Guide Pin J-5404
6. Piston and Valve Assembly Plate
7. Vacuum Poppet Spring Arm
8. Spirolox Ring
9. Pivot Washer
TECHNICAL SERVICE MANUAL
5. Vacuum Hose
6. Vacuum Tube
7. Seal
8. Power Piston
FIGURE 21—Diaphragm and Valve Assembly
CLEANING AND INSPECTION OF
POWER BRAKE UNIT
Thoroughly w ash all parts in alcohol. Use air
pressure to remove fluid from all internal
passages.
Inspect the vacuum cylinder shell bore for
scoring. nicks, or dents. If slight, they may
be removed with fine emery cloth.
Inspect master cylinder body. The bore,
one inch down from the open end, must be free
of any scratches or corrosion to insure proper
seal of ,the master cylinder cup.
Inspect all gasket contact areas.
Inspect piston
damaged threads. Check plunger bore and poppet
seats for any scratches or nicks. Do not
attempt to refinish bore. Replace piston plate
if necessary.
Inspect the finished surface of the master
cylinder piston rod
pitting. Do not attempt to refinish rod
surface; replace with new rod if necessary.
10. Clips
11. Pivot Arm
12. Atmosphere Poppet Spring
13. Vacuum Poppet
14. Piston and Valve Assembly Plate
15. Atmosphere Poppet
16. Seal
17. Plunger and Push Rod Assembly
18. Snap Ring
plates for cracks
for any scoring
and
or