Graco Contractor King 279005 Instructions Manual page 33

Replacement
NOTE: Use the image on the previous page for
reference when following these steps.
1. Use grease to lubricate piston seal (13).
2. Install piston seal (13) onto piston (10).
NOTE: O-ring (13) is larger than the piston groove.
Carefully push excess O-ring into cylinder.
3. Install piston into cylinder (14).
4. Push piston rod (7) up. Guide piston seal (13) into
motor cavity, then push piston seal down and into
place with the piston.
3A9121A
5. Replace motor cover (22).
6. Re-install top gasket (24) and screws (27) halfway
onto manifold (25).
7. Install bolts (31) halfway onto cover (1).
8. Torque screws (27) to 120 in-lb (13.6 N•m).
9. Torque cover bolts (31) evenly in a criss-cross
pattern to 40 ft-lb (54.2 13.6 N•m).
10. Reconnect the pilot valve air lines (37) to air valve
(30) and poppet valves (62).
11. Install coupling (CP) and pump guard (PG).
12. Install air intake hose (AH).
Air Motor Repair
33