Service Manual Instruction Manual
SECTION 4 - BOOM & PLATFORM
4-28 – JLG Lift – 3121171
Figure 4-18. Boom & Cylinder Installation - Sheet 4 of 4
THRUSTWASHER
THRUSTWASHER
0272979-H
NOTE: If space is available install one thrust washer on each side of the boom assembly between the
tower fly boom section and the main base boom section. If space only allows for the use of
one thrust washer, install it on the same side as the proximity sensor. (Same as the left side or
powertrack side of the machine.)