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Case 921C - Page 136

Case 921C
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OPERATING INSTRUCTIONS
130
LEFT PAGE
Bur 6-34090EUR
6. MACHINE WARM-UP - Once the
engine has started, run the engine
at half throttle (1100 to 1300 RPM)
for a minimum of 10 minutes under
no load. This will help warm the
hydraulic oil and the transmission
oil.
After engine warm-up, enable the
pilot controls by pushing down on
the right hand side of the switch on
the instrument control panel. Apply
and hold the foot brake, and cycle
all hydraulic functions several
times. In severe cold weather
conditions, the hydraulic functions
may be slow to respond. Cycling all
the hydraulic system functions
several times will warm the
hydraulic oil and the hydraulic
system components.
The hydraulic steering can become
slow in severe cold weather
conditions. Cycle the steering from
full right to left a minimum of 3 to 5
times before you drive the
machine.
NOTE: Make sure there is clearance
around the machine before steering the
machine from right to left.
In severe cold weather conditions
the brakes response can be slow.
The use of correct oil in the
hydraulic/brake system is required.
Even with the correct oil in the
hydraulic/brake system the first few
times the brakes are actuated there
may be some delay before the
brakes are applied. The operator
must actuate the brake pedal a
minimum of 8 to 10 times before
the machine is moved.
When the machine has been
correctly warmed up, apply the foot
brake and hold, shift the
transmission to forward push the
park brake to the Off position and
release the foot brake. Operate the
machine in a clear safe area.
Check the full operation of the
machine. DO NOT operate the
machine in third or fourth gear until
the transmission oil and axle oil
have been warmed up and the
machine moves freely.
IMPORTANT:
DO NOT operate the
machine in a closed in area.
IMPORTANT:
DO NOT operate the
machine on the road until the
transmission oil and axle oil have been
correctly warmed up. Operate the
machine in a clear safe area before
road operation.
7. If the machine has been left idling
in cold temperature, the engine will
stay warm. But the hydraulic/brake
oil and the axle oil will not stay
warm. The oil and components can
become cold and slow brake
function response time. If this
should happen you MUST go
through the complete machine
warm-up procedure.
8. The transmission is equipped with
internal protection that does not
allow the transmission to engage
below -12°C (10°F). If the
transmission does not engage
below these temperatures, allow 2
to 4 minutes of running in neutral
(this time will vary with
temperature), then try again.
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