JLG 680S, Service And Maintenance Manual

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SECTION 5 - BASIC HYDRAULICS INFORMATION & SCHEMATICS
3121234 5-63
DISASSEMBLY - NEUTRAL LOCKOUT SWITCH
ASSEMBLY OPTION
1. Loosen set screw in adapter and remove neutral lockout
switch from adapter.
2. Remove neutral lockout adapter from control assembly.
3. Remove pin, ball. and a-rings from adapter.
ASSEMBLY - NEUTRAL LOCKOUT SWITCH ASSEMBLY
OPTION
1. Install new a-ring onto adapter and new o-ring onto pin.
2. Install ball and pin into adapter. Lubricate with petro-
leum jelly to hold in place during installation.
3. Install adapter into control assembly. Torque 44 to
53 ft. lbs. (60 to 70 Nm).
4. Apply Loctite #222 or equivalent to threads of switch
and install neutral lockout switch into adapter. The
adjustment procedures for the switch are as follows.
a. Install switch, while moving control arm back and
forth, until “detent” action is detected. Back out the
switch until the “detent” action is very slight.
b. Obtain a test light or use a multimeter. Attach the
leads from the test light to the switch or the wiring
connector.
c. Move the control arm out of the detent position.
The test light will go on. Screw in the switch until
the light goes off. Mark this as position “A”. See Fig-
ure 5-97. Move the control arm to the detent posi-
tion and the test light should come back on.
d. Leaving the control arm in the detent position, the
light will remain on. Screw in the switch until the
light goes off. Mark this position"B".
e. Unscrew the switch one third of the distance
between "B" and "A". Install and tighten the hex
socket head set screw in one of the main quadrants
of the hex of the switch adapter. See
Figure 5-97.
Torque set screw 2.3 to 2.8 in. lbs. (3.2 to 3.8 Nm).
5. Test the switch by moving the control arm to the detent
position, the light should be on. Move the control arm
out of detent, the light should go off.
6. Remove test light and put servo control assembly into
operation.
DISASSEMBLY - NEUTRAL DETENT OPTION
1. Loosen seal nut and remove ball plunger from control
housing.
ASSEMBLY- NEUTRAL DETENT OPTION
1. Install ball plunger into control housing until contact
with bell crank detent is detected. After contact screw in
1/2 turn and retain with seal nut. Torque nut 10 to
22 ft. lbs. (14 to 30 Nm).
’’A’’
’’B’’
’’B’’
’’A’’
Step 4-c
Step 4-d
Step 4-e
Figure 5-97. Neutral Lockout Switch Assembly