Adjustments Made At Jib Valve - JLG 1850SJ Service And Maintenance Manual

SECTION 5 - BASIC HYDRAULIC INFORMATION & HYDRAULIC SCHEMATICS
2. Activate level down to the end of stroke, the gauge
should read 2000 psi. (138bar). The level down relief
valve is the second from the top. Turn clockwise to
increase, counterclockwise to decrease.
JIB PIN EXTEND (2500 PSI [172BAR]) PRESET
1. Install a high pressure gauge at port MS1.
2. Using the analyzer and "set pressures" menu, select jib
lock pin extend. This is the bottom relief valve on the
platform valve. Turn CW to increase and CCW to
decrease pressure.
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5. Adjustments Made at Jib Valve

JIB LEVEL UP
NOTE: To check or adjust the jib level up pressure setting the JLG
Analyzer must be used to override the automatic jib level
function.
1. Install a high pressure gauge at MLB.
2. Connect the analyzer to the ground control connector.
3. Position the main boom on the boom rest and the jib to
horizontal.
4. Using the analyzer, press the RIGHT
arrow key until ACCESS LEVEL 2 is reached. Press ENTER
.
5. Using the arrow keys, enter access code 33271 and press
ENTER .
or LEFT
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