JLG Triple-L Operator Manual - Manual (Page 56)

SECTION 4 - SERVICE AND MAINTENANCE
4-16 – Triple-L-Trailer – 3121224
4.11 DECK BEARING REPLACEMENT
5. In a clear flat area, lower the deck completely to the
ground.
6. A cap may be tack welded on the top of each bear-
ing channel. If so, grind the welds loose and remove
all (4) caps.
7. Remove the cylinder rod pin at the deck.
8. Using the "up/down" control, collapse the cylinder
just enough to free it from the deck. Tie up the cylin-
der so that it will not fall to the ground when lifting
the frame. Do not collapse the cylinder any more
than necessary to be free from the deck since you
will need to manually extend the cylinder when reas-
sembling.
.
9. Using a fork lift or hoist, slowly lift the chassis up to
allow the bearings to lift out of the bearing channels.
If you do not have extended forks to reach the full
width of the trailer, chain the far side of the trailer to
the fork lift mask so as to hold the chassis level while
lifting. Use extreme caution when lifting to ensure
everyone's safety!
10. Once the chassis is lifted above the channel all bear-
ings will be easily accessible. Remove snap ring and
slip off existing bearing. Replace with new bearing.
11. Slowly lower the chassis, aligning the bearings into
the channels. Pull out the cylinder rod and reattach
to the trailer deck. (Have someone hold the cylinder
control in the "down" position while manually pulling
out the cylinder rod.
12. The top channel cap was originally installed for
appearance. It may be left off if so desired. (If left off,
be sure to grind or file all sharp burrs).