Magnum Venus Plastech APS E-FIT-F-CMB-APS-6 - Manual (Page 18)

Chapter
7
Magnum Air Motor
DISASSEMBLY
1. Place motor in upstroke position. This can be accomplished by pushing rod toward top of the air
motor.
2. Remove four screws from deflector.
3. Remove deflector.
4. Remove 6 screws from air motor cap.
5. Remove air motor cap and gasket.
6. Loosen 4 screws, which hold valve plate and valve guide, until valve guide can be removed by
pulling upward.
7. Remove 4 screws and 4 washers from head assembly by pressing outward with a small allen
wrench.
8. With the aid of a screwdriver, unhook the legs of insert spring assembly from the bottom of valve
plate.
9. Remove valve plate and insert spring assembly from head by uplling upward. If valve plate is stuck,
tap the top edge lightly wiht a soft faced mallet. (Do not tap with anything metallic.)
10. Remove both inserts and insert spring assembly from valve plate.
11. Remove gasket from head assembly.
12. Remove two screws and two lockwashers from gland in head assembly.
13. With fingers, pull valve piston upward until gland has pulled out of its chamber.
14. Remove gland by sliding it up over valve piston.
15. Remove seal and O-ring from gland.
16. Disassemble valve piston from adapter.
17. Pull adapter upward until assembly is taut and grasp extension rod with fingers. Grasp extension
rod below adapter. Now push adapter down on extension rod and remove washer from extension
rod. Remove adapter.
18. Remove washer and “U” cup from adapter.
19. Remove 4 nuts from 4 connecting rods. (Leave 4 nuts on other end of connecting rods).
20. Remove 4 connecting rods.
21. Remove head assembly and place on the workbench with cap side down. This action will allow
washer to fall out of its cavity.