SkyTrak 6036 Service Manual - Manual (Page 181)

Model 6036 S/N 9B0499 and Before 9-68
Section 9. Hydraulic System
b. Disassembly
1. Remove connector (2, Fig. 9.44) and elbow (4)
from the pump (13) if necessary.
2. Disconnect black electric terminal cable (7)
from the solenoid cable terminal and the motor
power terminal.
3. Remove solenoid (10) from motor (15) by
removing two screws (8) and washers (9).
NOTE: Normally the pump and motor assembly is
replaced as a complete unit. If the unit is under
warranty, do not disassemble further; refer the unit
to your JLG authorized dealer. The pump (2) and
motor (1) can be separated by removing four
screws (11) and washers (12).
c. Cleaning and Drying
Without submerging the motor (15, Fig. 9.44) in the
cleaning solvent, clean the pump and motor
assembly in an approved cleaning solvent and blow
dry.
d. Inspection and Replacement
1. Inspect the pump and motor assembly.
2. Discard the complete pump and motor assem-
bly if the pump (13, Fig. 9.44) or motor (15) is
damaged or defective.
e. Assembly
1. If pump and motor assembly was disas-
sembled, install coupling (14, Fig. 9.44) on
pump (13).
2. Place the motor (15) in position on the pump
and secure with four screws (11) and washers
(12).
3. Position the solenoid (10) on the housing of the
motor and install two screws (8) and washers
(9) to secure.
4. Check torque on bottom nut on the motor
ground terminal and power terminal and re-
torque to 100 lb-in (11,3 N m) maximum if
necessary.
5. Connect black electric terminal cable (7) to the
solenoid cable terminal and motor power
terminal. Torque this top terminal nuts to 35 lb-
in (3,9 N m) maximum.
6. Install connector (2) and elbow (4) in pump
(13).
f. Installation
1. Place the pump and motor assembly on the
frame and support in position.
2. Secure the pump and motor assembly to the
frame with two 3/8-16 UNC-28 hex head
capscrews (5, Fig. 9.44) and lock washers (6).
3. Connect the supply hose (1) and pump outlet
hose (3) to appropriate pump port fittings.
4. Connect the red electrical cable to the solenoid
power terminal.
5. Connect the yellow ground wire to the motor
ground terminal.
6. Connect the yellow switch wire to the solenoid
switch terminal.
g. Testing
Test operation of steering and emergency brake
pump (para 9.1.6).
9.4.3 Steering and Emergency Brake
Pump (S/N 7P0014 and After)
a. Removal
1. Engage the park lock, place the travel selector
lever in neutral, and stop the engine.
2. Slowly loosen the fittings on the steering and
emergency brake pump as required to relieve
any trapped pressure
3. Tag and disconnect yellow ground wire from
the end head assembly (10, Fig. 9.45).
4. Tag and disconnect wire from switch terminal
on solenoid (9).
5. Disconnect red electrical cable from power
terminal on solenoid.
Wait for the hydraulic fluid to cool before servic-
ing any hydraulic component. Hot hydraulic fluid
can cause severe burns.
Warning !
Warning !
Relieve hydraulic pressure before servicing any
hydraulic component. Escaping hydraulic fluid
under pressure can penetrate the skin causing
serious injury.