Hitachi 1800 important safety instructions Reconnect the Lower

Repair

Reconnect the Lower

Always use connecting rod adapter 184595 and tie rods 184596 on hydraulic-powered pumps. Other con- necting rod adapters and tie rods do not allow sufficient clearance between the drip pan and coupling nut.

1.Screw the connecting rod adapter (105) to the air motor shaft. Torque as noted in FIG. 4.

2.Screw the tie rods (106) into the air motor (101). Using a wrench on the tie rod flats, torque as noted.

3.Make sure the coupling nut (103) and coupling col- lars (104) are in place on the displacement rod (DR).

4.Use at least two people to hold the lower while another reconnects it to the motor (see the CAU- TION, page 16). Orient the pump's fluid outlet to the air or hydraulic inlet as noted under Disconnect the Lower. Place the lower (102) on the tie rods (106).

5.Screw the nuts (107) onto the tie rods (106) and torque as noted in FIG. 4.

6.Screw the coupling nut (103) onto the connecting rod adapter (105) loosely. Hold the connecting rod adapter flats with a wrench to keep it from turning. Use an adjustable wrench to tighten the coupling nut. Torque as noted in FIG. 4.

7.Torque the packing nut (PN) to 135-169 N•m (100-125 ft-lb).

8.Reconnect all hoses. Reconnect the ground wire if it was disconnected. Fill the wet-cup (PN) 1/3 full of Graco Throat Seal Liquid or compatible solvent.

9.Turn on the air or hydraulic power supply. On hydraulic pumps, open the hydraulic return line valve first, then the supply line valve. Run the pump slowly to ensure that it operates properly.

	1	Torque to 68-81 N•m (50-60 ft-lb).
101	2	Torque to 81-89 N•m (60-66 ft-lb).
	3	Torque to 196-210 N•m (145-155 ft-lb).

101

106	105			105
		3	106	104
108	104
	103	3		103
	DR	108		DR
	PN			PN
				102
1 107	102	2	107

3

3

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TI8363a TI8365a

FIG. 4. Reconnect the Lower

311826B 17