Hitachi GH 300 important safety instructions Displacement Pump, Figures

Models: GH 300

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Displacement Pump

Displacement Pump

GH130 Only

(Figures 7-12)

See manual 311845 for pump repair instructions

Removal

1.Flush pump.

2.Relieve pressure, page 7.

Installation

If pin (92) works loose, parts could break off and project through the air, resulting in serious injury or property dam- age. Make sure pin is properly installed.

3.(Fig. 7) Remove suction tube (114) and paint hose (63) (remove at swivel end).

63

114

ti2272a

FIG. 7

4. (Fig. 8) Push retaining ring (120) up; push out pin (92).

CAUTION

If the pump jam nut (86) loosens during operation, the threads of the bearing housing and drive train will be dam- aged. Tighten jam nut (86) as specified.

1.(Fig 10) Screw jam nut (86) to bottom of pump (111) threads. Screw pump (111) completely into manifold. Unscrew pump (111) from manifold until pump outlet aligns with hose. Hand tighten jam nut (86), then tap 1/8 to 1/4 turn with hammer or torque to 75 ft-lb (101 N·m).

86

111

92

120

FIG. 10

ti2272d

FIG. 8

2. (Fig. 11) Slowly pull engine starter rope until pump rod pin hole is aligned with hydraulic rod hole. Fig. 8. Push pin (92) into hole. Push retaining ring (120) into groove.

TIB

5.(Fig. 9). Loosen jam nut (86). Unscrew pump (111).

86

120

92

FIG. 11

TIE

 

3. (Fig. 12) Fill packing nut with Graco TSL.

ti2272c

FIG. 9

ti2272f

FIG. 12

311797F

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Hitachi GH 300 important safety instructions Displacement Pump, Figures