Service Manual Instruction Manual

SECTION 4 - BOOM & PLATFORM
4-80 – JLG Lift – 3121171
4.26 MAIN BOOM TELESCOPE CYLINDER
Removal
1. Place the machine on a firm, level surface with the axles
fully extended or the turntable centered between the
rear wheels. The tower boom must also be fully lowered
and retracted.
2. Connect the JLG Control System Analyzer to the connec-
tor at the ground control box.
3. Start the engine.
4. Position the Platform/Ground select switch to the
Ground position.
5. If the Boom Control System allows tower telescope, skip
to step 18. If not, continue with step 6.
6. Plug the analyzer into the connector inside the Ground
control box.
7. Pull out the Emergency Stop switch and start the
engine.
8. The analyzer screen should read:
9. Use the arrow button to reach ACCESS LEVEL 2. Press the
ENTER key.
10. Enter the Access Code, 33271 to get into Access Level 1
mode.
NOTE: The service mode will only be displayed on the analyzer
when in access level 1 in the ground mode and be hidden
while in access level 2.
THE SERVICE MODE MENU WILL BE SELECTABLE AT THE TOP LEVEL OF THE
ANALYZER MENU STRUCTURE. “SERVICE MODE” WILL BE DISPLAYED ON THE
TOP LINE OF THE ANALYZER WITH THE CURRENT SUB-MENU SELECTION ON
THE BOTTOM LINE. THE SUB-MENUS WILL SCROLL WITH THE LEFT AND RIGHT
ARROW KEYS.