JLG 41EL Service Manual - Manual (Page 54)

SECTION 3 - TROUBLESHOOTING
3-4 – JLG Lift – 3120782
3.4 OUTRIGGER INTERLOCK CONTACTS
Outrigger Socket and Outrigger Beam -
Interlock Contacts
It is very important that the outrigger interlock contacts
located on the bottom surface inside the outrigger sockets
of the base frame, and the contactor plate on the bottom
of each outrigger beam are installed correctly. These parts
when installed properly will be insulated from (–) negative
ground. Read the following steps and see Figure 3-1. for
correct installation. Also see Troubleshooting Tables 3-1 &
3-2. for any reference to possible problems with interlock
contacts.
Outrigger Socket - Contactor Screw
Mounting Instructions
(See Figure 3-1.)
ORIGINAL DESIGN
1. Install insulating grommets into holes (on the socket
floor) inside of outrigger sockets in base frame.
2. Assemble two (2) #8-32UNC x 5/8" long contactor
screws with two (2) #8 nylon washers under head
and insert screw through insulating grommet as
shown in Figure 9-1.
3. Install one (1) #8 nylon washer onto contactor
screw threads against insulating grommet.
4. Apply Loctite #242 to screw threads.
5. Install one (1) standard #8 brass nut and thread in
against nylon washer until insulating grommet just
starts to compress. If necessary tighten nut further
until top of contactor screw head measures 0.212"
off floor of outrigger socket. (See Figure 3-1.)
6. Install wire end eyelet onto threaded end against
previously installed brass nut.
7. Install second standard brass nut and thread tight
against wire end eyelet.
8. While holding first brass nut, jam (tighten) second
brass nut against wire end eyelet.
5/2001 - DESIGN
1. Install an insulating bushing into the holes (on the
socket floor) inside of outrigger sockets in base
frame.
2. Place one (1) #8-32UNC x 5/8" long contactor screw
through each insulating grommet as shown in Fig-
ure 3-1.
3. Install two (2) #8 nylon washers onto contactor
screw threads against insulating grommet, on the
underside of the outrigger socket.
4. Apply Loctite #242 to screw threads.
5. Install one (1) standard #8 brass nut and thread in
against nylon washer until insulating grommet just
starts to compress.
6. Install wire end eyelet onto threaded end against
previously installed brass nut.
7. Install second standard brass nut and thread tight
against wire end eyelet.
8. While holding first brass nut, jam (tighten) second
brass nut against wire end eyelet.
Outrigger Beam - Interlock Contactor Plate
Mounting Instructions
ORIGINAL DESIGN
(See Figure 3-1.)
1. Assemble insulating grommets into the screw holes
in outrigger beam.
2. Locate contactor plate and insert two (2) brass #8 -
32UNC x 3/4" long countersunk flathead screws
through the contactor plate and install two (2) nylon
washers on each screw against contactor plate.
3. On outside of outrigger beam slide threads of brass
screws (of contactor plate assembly) through insu-
lating grommets in outrigger beams until nylon
washers rest against grommets and hold in place if
necessary.
4. Install one (1) nylon washer on each screw inside of
outrigger beam, against insulating grommet.
5. Thread a brass #8 - 32UNC locknut onto each
screw inside outrigger beam, tighten screws until
.175" height exists between bottom of plate and bot-
tom most edge of outrigger beam. (See Figure 3-1.)
5/2001 - DESIGN
(See Figure 3-1.)
1. Assemble an insulating bushing into each of the
screw holes in the floor of the outrigger beam.
2. Locate the contactor plate and insert two (2) brass
#8 - 32UNC x 3/4" long countersunk flathead screws
through the contactor plate.
3. Install one (1) o-ring on one screw and stack two (2)
on the other screw, slide o-rings in against contactor
plate.
4. On the bottom of the outrigger beam slide the
threads of brass screws (with o-rings and contactor
plate assembly) through the insulating bushings.
Install the screw with two (2) o-rings towards jack
end of outrigger beam. Hold in place if necessary.