JLG 400CRT Operator Manual - Manual (Page 18)

SECTION 2 - PREPARATION AND INSPECTION
2-6 – JLG Lift – 3121803
2.5 DAILY FUNCTIONAL CHECK
TO AVOID INJURY DO NOT OPERATE A MACHINE UNTIL ALL
MALFUNCTIONS HAVE BEEN CORRECTED. USE OF A MALFUNC-
TIONING MACHINE IS A SAFETY VIOLATION.
A functional check of all systems should be performed,
under no load, once the walk-around inspection is com-
plete, in an area free of overhead and ground level
obstructions. Perform pre-load functional check in accor-
dance with the following procedure:
1. Raise and lower platform several times. Check for
smooth elevation and lowering. Check for High
Drive cut-out as platform begins to raise.
2. Raise the scissors arms. Verify that the Oscillating
Axle Valve Plunger is fully extended.
3. Drive forward and reverse, check for proper opera-
tion.
4. Check that drive brake holds when machine is
driven up a hill, not to exceed rated gradeability, and
stopped.
5. On 400CRT check for drive cutout at preset height.
6. Steer left and right. Check for proper operation.
7. Check fluid level on hydraulic oil reservoir. Refer to
the Lubrication Chart.
8. Check fluid level on hydraulic oil reservoir. Refer to
the Lubrication Chart.
2.6 TORQUE REQUIREMENTS
The Torque Chart in this section consists of standard
torque values based on bolt diameter and grade, also
specifying dry and wet torque values in accordance with
recommended shop practices. This chart is provided as
an aid to the operator in the event he/she notices a condi-
tion that requires prompt attention during the walk-around
inspection or during operation until the proper service per-
sonnel can be notified. This section provides specific
torque values and periodic maintenance procedures with
a listing of individual components. Utilizing this Torque
Chart in conjunction with the preventive maintenance pro-
cedures, will enhance safety, reliability and performance
of the machine.
NOTE: All wheel lugs are torqued at 142Nm (105 ft lb)
2.7 DUAL FUEL SYSTEM (IF EQUIPPED)
IT IS POSSIBLE TO SWITCH FROM ONE FUEL SOURCE TO THE
OTHER WITHOUT ALLOWING THE ENGINE TO STOP. EXTREME
CARE MUST BE TAKEN AND THE FOLLOWING INSTRUCTIONS
MUST BE FOLLOWED.
Changing from Gasoline to LP Gas.
1. Start the engine from the platform control station.
2. Open the hand valve on the LP Gas supply tank by
turning counterclockwise.
BE SURE ALL GASOLINE IS EXHAUSTED BEFORE SWITCHING
TO LP GAS.
3. While engine is operating place the two position-
LPG/GAS switch at the platform control station to LP.
Changing from LP Gas to Gasoline.
1. With the engine operating on LP gas under a no
load condition, position the LPG/GAS SELECT
switch at the platform control station to the GAS
SELECT position.
2. If the engine ‘stumbles’ because of a lack of gaso-
line, place the switch to the LPG position until the
engine regains smoothness, then return the switch
to the GAS SELECT position. Repeat as necessary
until the engine runs smoothly on gasoline.
3. Close the hand valve on the LP gas supply tank by
turning clockwise.