Motor
NOTE: See Fig. 12 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. 10.
2.
Relieve pressure; page 3.
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. 12 and 4.
10.Align new motor with cart and reinstall screws (75).
11.Assemble drive housing to motor. Follow steps 9 to 15 on page 15. Install junction box.
12.Connect wires to motor control board (22a). Refer to Fig. 4. Install motor control board.
13.Connect piston rod (222) to drive housing; see page 11, Installing Pump, Step 2 and WARNING following it.
14.Install shroud (32) and drive housing cover (11).
15
14
5.Remove drive housing cover (11).
6.Turn displacement pump rod (222) so pin hole aligns with bottom drive housing screw (16). See Fig. 11. Remove three drive housing screws and lockwashers (16, 4). See Fig. 11 and 12.
7.Remove two motor screws and lockwashers (3, 4).
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
(A) from motor. Do not allow gear (13) to fall. Read CAUTION on page 15.
9.Remove four screws (75) and lift motor off cart
(70).
trolls t
5
2
4
116
Fig. 10
4
16
12
Fig. 11
1 | 3 | 32 |
| ||
4 |
|
|
13 |
|
|
7840A
222
7840A
34
11 
1Torque to 80
Fig. 12
12 309067
20 | 70 | |
75 | ||
23 | ||
| ||
A | 26 | |
| ||
22a |
| |
22 |
| |
25 |
| |
| 9664A |