JLG sky trak mmv Service Manual page 136

Cab, Covers and Mirrors
11. Remove the joystick assembly (1) from the vehicle.
3
12. Place the joystick in a vise or other suitable device.
Remove the six straight fittings from the joystick valve
ports. Remove and discard all of the small (4) and large
o-rings (5) from the joystick valve and fittings (6) (to
help avoid leaky connections, always use new o-rings
when servicing the vehicle).
Joystick Assembly Installation
Note: If installing a new joystick assembly, label or
permanently mark the hose ports on the underside as
shown in illustration above. Remove any port plugs
before proceeding.
4
5
3.38
1
SS1270
2
6
SS1290
1. As required, carefully remove the rubber boot from
the joystick by pulling the boot (7) off the joystick
base (9) and lifting it over the joystick handle (8).
Save the boot for installation later.
2. Place the joystick in a vise or other suitable device.
Lubricate and install new small (4) and large o-rings
(5) and the six straight fittings (6) into the joystick
valve ports if necessary. To help avoid leaky
connections, ALWAYS use new o-rings when
servicing the vehicle.
3. Position the joystick assembly (1) above its mounting
hole in the console. Remove the plug from the hose
labeled "P" and secure the hose to the "P" port of the
joystick valve (see detail in illustration below).
4. Remove the plug from the hose labeled "T" and
secure the hose to the "T" port of the joystick valve.
Remove the plugs from the remaining hoses one at
a time and secure each hose as labeled to the
proper fitting on the joystick control valve (see detail
in illustration below). Tighten all fittings securely.
5. Position the lower joystick wires (2). Reach in
through the logic panel opening and guide the wires
up through the logic panel opening (3) while lowering
the joystick assembly (1) down into its mounting hole
in the console.
6. Connect the 2-pin (7), 3-pin (8), and 7-pin (9) logic
panel connectors to the harness and the 6-pin
connector (10) to the joystick harness connector on
the logic panel. Set the logic panel in its mounting
hole, but DO NOT secure with fasteners at this time.
7
9
10
8
MT2730
Model MMV Rev. 12/04