TM5-3810-305-10
h. Continue to hold start button until tach-
i.
j.
k.
1.
ometer indicates 500 rpm or 1 minute of
time is reached.
Check oil pressure gauge for 10 psi (69
kPa), or higher at idle 720 to 880 rpm.
Operate engine at 1,000 to 1,500 rpm, until
engine temperature reaches 120 to 140
degrees F (49 to 60 degrees C).
NOTE
Minor oil leakage of filters is
normal and can be as much as 3
tablespoons per minute for the
first 5 minutes of operation.
Inspect engine oil filter and transmission
oil filter for leaks. There should be no
leaks present after 5 minutes of operation.
Close engine hood.
Attempt to move the LRT 110 Crane for-
ward and backward to check for frozen
brakes and tires.
m. Check brakes and steering functions
before exceeding 5 mph (8 km/h).
ALLOW THE ENGINE TO WARMUP
SO
7.
that optimum engine power is obtained at
low speed for the protection of the hydrau-
lic system.
Special attention must be given to the hy-
draulic oil.
CAUTION
BE ALERT FOR SIGNS OF
PUMP CAVITATION. The
hydraulic oil provides lubrication
for pumps. When too heavy or
stiff, it will not flow fast enough
to meet pump demand and a
vacuum or “cavitation” will be
created. A “screaming” noise
indicates inadequate pump
lubrication, and, if allowed to
continue for more than a short
period, will result in serious
damage to pumps.
If cavitation noise is noticed, hydraulic oil
must be warmed. To do this, actuate a func-
tion, allow the cylinders involved to reach the
limits of their travel and hold control in
engaged position for 10 minutes. When
running hydraulic oil over relief to warm it,
be sure to restrict flow by turning engine at as
slow a speed as possible.
Increase engine speed gradually, allowing
sufficient time for oil to run through the
system before commencing operation. If
cavitation noise is still noticed, repeat the
procedure listed above. Refer to the lubrica-
tion chart, Appendix B, for recommended oil
viscosity for the winter season.
4-6
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