Motor And Brake Assembly; Motor Control Valve Assembly - JLG 1200SJP Service And Maintenance Manual

SECTION 3 - CHASSIS & TURNTABLE

Motor and Brake Assembly

NOTE: Refer to Figure 3-49., Swing Drive - Motor and Brake Disas-
sembly (SN 0300201016 through 0300254466, SN
B300002238 to Present).
1. Place O-ring (27) onto end of Brake (26) and locate brake
into pilot of cover.
2. Place Gasket (31) onto the brake face and line up the
holes.
3. Place Motor (10) into Brake pilot against the Gasket (31).
4. Assemble Lift Lugs (28) onto Hex Bolts (29). Assemble
Hex Bolts (29) with Lift Lugs through the Motor (10) and
Brake (26) against the motor flange. Torque to 35 ft-lbs.
5. Fill Brake (26) with 2.7 oz. (80cc) of BRAKOILVG32
(DTE24).
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Motor Control Valve Assembly

NOTE: Refer to Figure 3-48., Swing Drive - Motor Control Valve Dis-
assembly (SN 0300201016 through 0300254466, SN
B300002238 to Present).
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).
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.
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