GMC 1990 Light Truck Repair Manual page 338

5-2 BRAKES
\ 27 26
28
Install or Connect (Figure 1)
E l
Tools Required:
J 26889 Accumulator Compressor
J 24551-A Seal Protector
J 25083 Seal Protector
NOTICE: For steps 8 and 9 see "Notice" on
page 5-1 of this section.
• Lubricate all the seals and metal friction points with
power steering fluid.
Figure 2—Removing the Accumulator
6. O-Ring
7. Spring
8. Housing
9. Bolt
10. Seal
1. Retainer 11. Accum ulator Valve
2. Accum ulator
12. Return Line F itting
3. O-Ring
13. Spool Valve
4. Retainer 14. Seal
5. Plug 15. Seal
Figure 1—Hydro-Boost Components
18
16. Cover
17. Bracket
22 21
18. Nut
19. Boot
20. Pedal Rod
21. Pin
22. Piston Assem bly
23. Seal
24. Retainer
25. Piston Return Spring
26. Retainer
27. Baffle
28. O utput Pushrod
1. Seal (10) and return line fitting (12).
2. Accumulator valve (11).
3. Spool valve (13).
4. Seal (23) and piston assembly (22) by using
J 24551-A or J 25083 (figure 7).
• Lubricate the tool with clean power steering
fluid.
5. Seal (14) onto the piston assembly (22).
6. Seal (15) onto the housing (8).
7. Cover (16).
8. Bolts (9).
4. Retainer
5. Plug
6. O-Ring
7. Spring
Figure 3—Removing the Plug and Spring
1?
F-00761
F-00763