
66 31200243
Operation Section
Use the following procedure in order to move the
machine to a safe location.
1. Ensure that the transmission speed control is in
the NEUTRAL position.
2. Engage the parking brake.
3. Lower the boom until the boom is below an angle of
45°.
4. Move the transmission speed control through the
following positions:
• NEUTRAL position
• FIRST position
• NEUTRAL position
• FIRST position
Note: This sequence must be executed within two
seconds in order to be successful.
The transmission can now be engaged.
5. The machine should now be moved to a suitable
location in order to repair the boom angle sensor.
Repair the boom angle sensor before returning
the machine to operation.
Note: The double shift sequence will be required to be
repeated if the transmission speed control is moved
into NEUTRAL position.
Boom Cylinder Lock (If Equipped)
A raised boom can fall if a hydraulic component is
removed.
Sudden movement of the boom could cause personal
injury or death.
Remove any load from the work tool, retract the boom
and install the boom cylinder lock or a suitable
supporting stand before working under a raised boom.
When you are working under the boom it is necessary to
install a boom cylinder lock on the boom cylinder.
Installation and Removal Procedures
Installation
1. Park the machine on level ground. Retract and
lower the boom. Move the transmission control to
NEUTRAL. Engage the parking brake.
2. Raise the boom to an angle of approximately 20
degrees. Stop the engine. Remove the engine start
switch key. If equipped, remove the battery
disconnect switch key.
Note: Make sure that the front axle and the top of the
main frame are clear of debris before you attempt to
install the boom cylinder lock. Clean the area, if
necessary.
3. Check that the cylinder lock is the correct type for
your machine. Inspect the boom cylinder lock for
damage. Inspect pad (4). Do not use the cylinder
lock if the cylinder lock is damaged or if pad (4) is
loose or missing.
4. Place the cylinder lock onto the top of the main
frame above the front axle. Allow sufficient access
to stand on the flat area of the frame.
Make sure that both of your hands are free. Approach
the machine from the front. Use the fender bracket (if
equipped) and the edge of the main frame for support.
Step onto the axle. Then, step onto the top of the main
frame. Use the nonslip treads that are provided.
Illustration 88 g01071433
5. Install boom cylinder lock (1) onto the boom cylinder.
Insert pin (2) and retaining clip (3). Align boom cylinder
lock (1). Location tongue (5) must pass between boom
plates (6) when the boom is lowered.
Note: When you descend from the machine, use the
supports and use the nonslip treads, in the same
manner that is indicated in the previous steps.
6. Replace the battery disconnect switch key (if
equipped) and the engine start key.
7. Start the engine. Lower the boom slowly. Make
sure that location tongue (5) passes between
boom plates (6). Lower the boom until there is a
clearance of 6 mm (0.25 inch) between the boom
plates (6) and the yellow nylon pad (4).
NOTICE
Do not operate the boom with the boom cylinder lock
installed. Operating the boom with the boom cylinder
lock installed will damage the boom cylinder lock and
the boom cylinder.
8. Stop the engine. Remove the engine start switch
key. If equipped, remove the battery disconnect