Service

1Torque to 40–50 ft-lb (54–68 NSm)

11

8

7

1

5

9

6

4

1

T

 

12

3 1

06640

Fig. 3

12 307160

NOTE: To service the displacement pump, refer to manual 308043, supplied.

NOTE: To service the hydraulic motor, refer to manual 308158, supplied.

Disassembly (See Fig. 3)

WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 8.

1.Flush the pump with a compatible solvent, if pos- sible. Stop the pump at the bottom of its stroke. Relieve the pressure.

2.Disconnect the hoses from the pump. Plug the hydraulic lines to prevent contamination. Remove the pump from its mounting and clamp it in a vise.

3.Remove the upper cotter pin (1). Unscrew the coupling nut (7). Unscrew the three tie rod locknuts (3), then unscrew the three tie rods (6) from the hydraulic motor (11). Carefully pull the displacement pump (12) away from the motor (11).

4.Remove the lower cotter pin (1). Loosen the locknut (4). Unscrew the connecting rod (9) from the displacement rod (T).

Reassembly (See Fig. 3)

1.Screw the three tie rods (6) into the motor (11). Torque to 40–50 ft-lb (54–68 NSm).

2.Screw the connecting rod (9) into the displacement rod (T). Install the cotter pin (1) and tighten the locknut (4).

3.Guide the displacement pump (12) onto the tie rods (6).

4.Install the locknuts (3) on the tie rods. Torque the nuts to 40–50 ft–lb (54-68 NSm).

5.Tighten the coupling nut (7). Insert the upper cotter pin (1) through the coupling (8)

6.Connect the hoses to the pump. Run the pump slowly to be sure it runs smoothly and does not bind. If necessary, adjust the displacement pump tie rods and locknuts (see manual 308043), or the tie rods (6) and locknuts (3) which attach the motor, to eliminate binding.

7.Reconnect the ground wire to the motor.

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Image 12
Hitachi 210313 manual Service, Disassembly See Fig

210313 specifications

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