a. Examine the position of the manual suspension
lock valves. If both valves are in the same
position, go to Step 2. If one valve is open and
one is closed, go to Step b.
b. Place the machine in the EARTHMOVING mode,
and open the manual suspension lock valve
which was closed. Go to Step c.
c. Place the machine in the SELF-DEPLOY mode,
and lower and raise the machine using the
kneeling switch. Go to Step d.
d. Determine if the machine is level. If the machine
is not level, go to step 2.
2. Suspension system not charged correctly:
a. Determine if the condition of the machine
interferes with the operation of the machine. If
the machine cannot be operated in its current
condition, go to Step b. If the machine can be
operated in its current condition, go to Step c.
b. Perform the emergency machine-leveling
procedure. If the procedure restores the
machine to an operational condition, go to Step
c. If the procedure does not change the
condition of the machine, go to Step d.
c. Continue to operate the machine. However,
deliver the machine to Unit Maintenance as soon
as possible for a complete charging of the
suspension system.
d. Refer the problem to Unit Maintenance for
repair.
Problem 19: Hydraulic Functions Erratic or
Noisy
Probable Cause(s)
• Low oil level
1. Low oil level:
a. Check the oil level in the hydraulic tank. If the oil
level is low, go to Step b. If the oil level is
normal, go to Step 2.
b. Examine the hydraulic system for loose fittings
and visible leaks. If loose fittings or leaks are
found, go to Step d. If no loose fittings or leaks
are found, go to Step c.
c. Add the appropriate amount and grade of oil to
the hydraulic tank. If the hydraulic functions
continue to be erratic or noisy, go to Step e.
d. Inform Unit Maintenance of the leaks, and have
the leaks repaired as soon as possible.
e. Refer the problem to Unit Maintenance for
evaluation.
Problem 20: Blade Functions Exhibit Less Power
Than Normal
Probable Cause(s):
• Needle valve on remote hydraulic power manifold
open
1. Needle valve on remote hydraulic power manifold
open:
a. Determine if the engine is hard to start and if the
engine produces black smoke after starting. If
yes, go to Step b. If no, go to Step d.
b. Examine the position of the needle valve on the
remote hydraulic power manifold. Refer to
“Maintenance Features, Remote Hydraulic Tool
Ports” in this section. If the valve is open, go to
Step c. If the valve is closed, go to Step d.
c. Close the valve, and observe the operation of
the blade functions. If the blade functions still
exhibit less power than normal, go to Step d.
d. Report the low power problem to Unit
Maintenance for evaluation.
Problem 21: Blade Will Not Lower
Probable Cause(s):
• Machine in SELF-DEPLOY mode
1. Machine in SELF-DEPLOY mode:
a. Examine the position of the self-
deploy/earthmoving switch. If the switch is in
EARTHMOVING, go to Step c. If the switch is in
SELF-DEPLOY position, go to Step b.
b. Move the self-deploy/earthmoving switch to
EARTHMOVING position, and attempt to lower
the blade. If the blade does not lower, go to
Step c.
97
Operation Section
Troubleshooting
TM5-2430-200-10
