Hitachi 232133 manual Motor, Remove three drive housing screws

Motor

WARNING

INJECTION HAZARD

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

NOTE: See Fig. 21 except where noted.

1.	Try to stop pump with piston rod (222) in lowest
	position. To lower piston rod manually, remove
	shroud (32) and rotate motor fan blades. Use a
	screwdriver to push retaining spring (15) up and
	push out pin (14). See Fig. 19.
2.	Relieve pressure.
3.	Remove motor shield (32).
4.	Lift connecting rod. Remove screws (25, 26) and
	lower heat sink (22) and motor control board (22a).
	Disconnect motor wires and pressure transducer
	wire (A) from motor control board. Remove heat
	sink (22) and motor control board (22a), screws
	(23), and junction box (20). Refer to Fig. 21 and
	13.

9.Remove four screws (75) and lift motor off cart (70).

10.Align new motor with cart and reinstall screws (75).

11.Assemble drive housing to motor. Follow steps 9 to 15 on page 26. Install junction box.

12.Connect wires to motor control board (22a). Refer to Fig. 13. Install motor control board.

13.Connect piston rod (222) to drive housing; see page 22, Installing Pump, Step 2 and WARNING following it.

14.Install shroud (32) and drive housing cover (11).

15

14

Fig. 19 7840A

5.	Remove drive housing cover (11).
6.	Turn displacement pump rod (222) so pin hole
	aligns with bottom drive housing screw (16). See
	Fig. 20. Remove three drive housing screws and
	lockwashers (16, 4). See Fig. 20 and 21.

4

16

12

222

7. Remove two motor screws and lockwashers (3, 4). Fig. 20 7840A

8.Tap lower rear of drive housing (2) with a plastic mallet to loosen motor. Pull drive housing straight

off motor while guiding pressure transducer wire				70
(A) from motor. Do not allow gear (13) to fall. Read			32
CAUTION on page 26.			1 3
		4
	13
	2
	5
	4
1	16
	20	23	75
34
11		A
		22a
1 Torque to 80 in-lb (9 N￿m)		22	26
Fig. 21		25		7741A
			308801	23