Disassembly and Repair 745
Actuator assembly cleaning or
replacement
(continued)
2
5
Ygure 7.39
- Spool
and Sleeve Details:
7 Spool
2 Flange
3 Sleeve
4 Lands
5 Retaining
Screw
8. Remove the o-rings and discard them.
9. Remove the retaining screw in the side of the sleeve.
10. Carefully slide the spool out of the sleeve. Inspect the parts for
damage.
11. If the spool lands are nicked, gouged, deeply scratched, or corroded,
replace the valve assembly. If they are not damaged but covered
with contaminants, clean the assembly.
12. Clean the spool and sleeve with mineral spirits or any
non-chlorinated cleaning solvent and a soft cloth. Do not scrape the
spool or sleeve, or use abrasives such as sandpaper or emery cloth.
Be careful not to round off the sharp edges of the spool lands.
13. Thoroughly wipe the valve parts with a clean cloth or rinse them with
denatured alcohol.
14. Carefully insert the spool into the sleeve and center it in the sleeve.
Figure 7.40 - Pressing the Valve Assembly
into the Valve Body
20. Place the upper detent in place on the valve body and secure with
Figure 7.47 -
Installing the Actuator
Assembly Can.
NOTE: The spool and sleeve are a matched set and can not be
exchanged for items in another air valve assembly.
15. Install the retaining screw into the sleeve and apply torque of 0.7-0.9
Nom (6-8 in.-lb).
16. Check to see that the spool slides freely in the sleeve. If it does not,
replace the valve assembly.
17. If cleaning has solved the problem, put o-ring lubricant on a new set
of o-rings and place them on the sleeve. If not, replace the valve
assembly. .
18. Press the valve assembly into the valve body by pushing on the
flange.
19. Set the bumper assembly in position on the spool. Install the nut.
Hold the bumper assembly and apply torque of 9-11 Nom
(81-99 in.-lb) to the nut.
screws. Apply torque of 1.82-2.27 Nom (16-20 in.-lb).
21. Hold the bumper with an adjustable wrench and thread the magnet
assembly into the valve spool until it seats. Apply torque of 9-11 Nom
(81-99 in.-lb) to the magnet assembly.
22. Slide the can over the magnet assembly so the opening faces the
pump assembly. Secure with the screws. Apply torque of 3-4 Nom
(28-36 in.-lb).
23. Set the valve cap on top of the bumper assembly and secure. Apply
torque of 3-4 Nom (28-36 in.-lb).
24. Check to see that the o-rings are in place on the air cylinder.
25. Move the piston up or down until the shifter fork is in the center of the
pump mount.
BNordscn Corporation 1~94
All Rights Resewed
PIN 106 7018
41-23OOSP-Issued lOi
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