7310548
Hydraulic Pump
Removal
1. Relieve pressure;page 5.
Let hydraulic system cool before beginning ser-
vice.
2. Place drip pan or rags under sprayer to catch
hydraulic oil that leaks out during repair.
3. Remove drain plug (40) and oil filter (47) and allow
hydraulic oil to drain.
4. Fig. 2. Disconnect suction tube (114).
5. Disconnect paint pump (111).
6. Remove two screws (115a) and belt guard (117).
7. Raise motor and remove belt (44).
8. Remove two set screws (133) and fan pulley (96).
9. Remove case drain tube (97).
10. Remove elbow (22).
11. Remove eight screws (27) reservoir cover (68)
filter assembly (A) and gasket (62).
12. Remove four screws (5) and hydraulic pump (98)
from reservoir (69).
Installation
1. Install hydraulic pump (98) in reservoir (69) with
four screws (5); torque 100 in-lb (11 N·m).
2. Install gasket (62) and reservoir cover (68) with
eight screws (27); torque 90 in-lb (10 N·m).
3. Install elbow (22); torque to 15 ft-lb (20.3 N·m).
4. Install case drain tube (97); torque to 25 ft-lb
(33.9 N·m).
5. Install fan pulley (96) with two set screws (133).
6. Raise motor and install belt (44).
7. Install belt guard (117) with two screws (115a).
8. Connect paint pump (111).
9. Fig. 2. Connect suction tube (114).
10. Install drain plug (40); torque t o 110in-lb
(12.4 N·m). Install oil filter (47); tighten 3/4 t urn
after gasket contacts base. Fill with Graco hydrau-
lic oil, page 5.
11. Start up and allow pump to operate at low pres-
sure for approximately 5 minutes to purge all air.