Motor Control Valve Assembly - JLG 1200SJP Service Maintenance Manual

Motor Control Valve Assembly

1. Lay assembly down with motor ports facing up. Remove
the two plastic plugs in the motor ports, being careful
not to loose the O-ring in each port. Assemble the Motor
control Valve (32) onto the Motor (10) with Bolt (34) and
Lock Washers (33). Torque Bolts (33) 23 to 27 ft-lbs. (32 to
38 Nm).
NOTE: Be sure to align the holes in the control valve with the
motor ports.
2. Install Elbow Fittings (36) into Brake (26) and torque 13
to 15 ft-lbs. (18 to 21 Nm).
3. Install Elbow Fittings (36) into Motor Control Valve (32)
and torque to 13 to 15 ft-lbs. (18 to 21 Nm).
1J. O-Ring Plug
10. Hydraulic Motor
21. Plug
24. ID Plate
3121142
25. Drive Screw
26. Hydraulic Brake
32. Motor Control Valve
33. Lockwasher
Figure 3-46. Swing Drive - Motor Control Valve Assembly
– JLG Lift –
SECTION 3 - CHASSIS & TURNTABLE
4. Assemble Tube (35) into Elbow Fittings (36) and torque
13 to 15 ft-lbs. (18 to 21 Nm).
5. Install O-ring Plugs (21) into Motor Control Valve (32)
and torque 30 to 31 ft-lbs. (42 to 43 Nm).
6. Pressure test brake, tube and control valve connections
by applying 3000 psi (207 bar) pressure to the brake
bleed port and holding for 1 minute. Check for leaks at
the control-valve-motor interface and the tube connec-
tions. Release pressure.
7. Place I.D. Plate (24) onto Housing (1G) with two Drive
Screws (25). I.D. Plate (24) is to be inline with O-ring Plug
(1J) as shown on assembly print.
34. Hex Bolt
35. Hydraulic Tubing
36. Elbow
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