Hydraulic Pump, Removal, Installation | Graco Inc 311797J manual

Hydraulic Pump

(Figure 2)

Removal

Let hydraulic system cool before beginning service.

1Relieve pressure, page 7.

2Place drip pan or rags under sprayer to catch hydraulic oil that leaks out during repair.

3Remove drain plug (2) and oil filter (227) and allow hydraulic oil to drain.

4Fig. 2. Disconnect suction tube (114).

5Disconnect pump (111), page 15.

6Remove screw (172), nut (173) and belt guard (117).

7Raise motor and remove belt (44).

8Remove two set screws (176) and fan pulley (96).

9Remove case drain tube (225).

10Remove elbow (221).

11Remove tube (276) from elbow (226). Remove elbow (226) from hydraulic pump (220).

12Remove eight screws (212) reservoir cover (209) filter assembly (206) and gasket (203).

13Remove four screws (277) and hydraulic pump (220) from reservoir cover (209).

Installation

1Install hydraulic pump (220) to reservoir cover (209) with four screws (277); torque 90-110 in-lb (10.1-12.4 N·m).

2Install gasket (203) and reservoir cover (209) with eight screws (212); torque 110+/-5 in-lb (12.4 +/- 0.5 N·m).

3Install elbow (226) in hydraulic pump (220). Install elbow (226) in tube (276). Torque to 25 ft-lb (33.9 N·m).

4Install elbow (221); torque to 15 ft-lb (20.3 N·m).

5Install case drain tube (225); torque to 15 ft-lb (20.3 N·m).

6Install fan pulley (96) with two set screws (176).

7Raise motor and install belt (44).

8Install belt guard (117) with screw (172) and nut (173).

9Connect pump (111), page 15.

10Fig. 2. Connect suction tube (114).

11Install drain plug (2); torque to 110 in-lb (12.4 N·m). Install oil filter (227); tighten 3/4 turn after gasket contacts base. Fill hydraulic pump with Graco hydraulic oil, page 6, through elbow (221) port until full. Fill reservoir with remaining hydraulic oil.

12Start up and allow pump to operate at low pressure for approximately 5 minutes to purge all air.

13Check oil hydraulic oil and top off, if required.

311797J