JLG 4017PS Service Manual - Manual (Page 60)

Boom
3-22 3706PS, 3707PS, 4014PS, 4017PS, 33.7, 37.6, 37.7
3.11 BOOM SYSTEM COMPONENT
TERMINOLOGY - 4017PS
To understand the safety, operation and maintenance
information presented in this section, it is necessary that
the operator/mechanic be familiar with the name and
location of the major assemblies of the boom system. The
following illustration identifies the components that are
referred to throughout this section.
MZ5670
EXTEND/RETRACT CYLINDER
FIRST BOOM
SECTION
AUXILIARY
QUICK
CONNECTS
TILT CYLINDER
SECOND BOOM
SECTION
THIRD BOOM
SECTION
FOURTH BOOM
SECTION
HOSE CARRIER
EXTEND CHAINS
(TWO PAIR)
BOTTOM VIEW
QUICK COUPLER
REAR VIEW
RETRACT CHAINS (THREE)