JLG 680S, Service And Maintenance Manual

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SECTION 4 - BOOM & PLATFORM
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4.2 ROTATOR AND SLAVE CYLINDER
Removal
HYDRAULIC LINES AND PORTS SHOULD BE CAPPED IMMEDIATELY AFTER DIS-
CONNECTING LINES TO AVOID ENTRY OF CONTAMINANTS INTO SYSTEM.
1. Tag and disconnect hydraulic lines to rotator. Use suit-
able container to retain any residual hydraulic fluid. Cap
hydraulic lines and ports.
2. Supporting the rotator assembly and slave cylinder,
remove hardware from pin #1. Using a suitable brass
drift and hammer remove pin #1 from rotator assembly.
NOTE: The rotator and slave cylinder assembly weighs approxi-
mately 112 lbs. (51 kg).
3. Remove the hardware from pin #2. Using a suitable
brass drift and hammer, remove pin #2 from the fly
boom and remove the rotator.
4. Telescope the fly section out approximately to gain
access to the slave cylinder.
5. Supporting the slave cylinder remove the hardware
from pin #3. Using a suitable brass drift and hammer
remove pin #3 from the fly boom and remove slave cyl-
inder.
6. Tag and disconnect hydraulic lines to the slave cylinder.
Use a suitable container to retain any residual hydraulic
fluid. Cap hydraulic lines and ports. Remove the slave
cylinder.
Installation
1. Telescope the fly section out approximately to gain
access to the slave cylinder.
2. Using adequate support, align the holes of slave cylin-
der with fly boom. Using a suitable brass drift and ham-
mer, install pin #3 to the fly boom. Install mounting
hardware securing pin #3.
3. Using adequate support, align the hole of rotator
assembly with fly boom. Using a suitable brass drift and
hammer, install pin #2 to the fly boom. Install mounting
hardware securing pin #2. Torque the hardware to
35 ft. lbs. (50 Nm).
4. Align holes of slave cylinder and rotator assembly, Using
a suitable brass drift and hammer, install pin #1 to the
rotator assembly and slave cylinder. Install mounting
hardware securing pin #1.
5. Remove tag and reconnect the hydraulic lines to the
rotator assembly and the slave cylinder.
SLAVE CYLINDER
ROTATOR
1
2
3
FLY BOOM
Figure 4-3. Location of Components - Rotator and Slave Cylinder