Boom system component terminology – Lull 944E-42 Service Manual User Manual
Page 50

Boom
3.2
Model 644E-42/944E-42
Rev. 6/04
3.1
BOOM SYSTEM COMPONENT 
TERMINOLOGY
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.
MU0160
Quick Attach
Attachment 
Tilt Cylinder
Inner 
Boom
Outer 
Boom
Extend/Retract 
Cylinder
Intermediate 
Boom
Wear Pad
Boom 
Pivot Pin
Attachment 
Tilt Hydraulic 
Tubes
Boom 
Extend 
Chain
Boom 
Retract 
Chain
Slave Cylinders
Boom 
Proximity 
Sensor
Auxiliary 
Hydraulic 
Couplers
Boom 
Angle 
Indicator
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