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TM 5-2420-224-10
CAUTION
Low idling speed during extremely cold temperatures can result in
incomplete combustion and formation of heavy deposits on valves.
(b)
Run engine at reduced speed only long enough to circulate oil through engine, then increase
speed and warm up engine.
(c)
Cover front of radiator, if necessary, to bring engine up to operating temperature. Remove
cover after warmup to avoid overheating engine.
(7)
Vehicle Operation.
(a)
Test brakes and equipment controls carefully.
(b)
Move all controls slowly to warm hydraulic oil. Cycle each control several times. Normal
warmup period is 3-10 minutes.
(c)
Operate under light load for first 5 minutes of operation.
(d)
Make sure compressed air antifreeze system is on.
(8)
Parking and Non-Use.
(a)
Park vehicle in sheltered place, if possible. Cover to protect engine, accessories, and
controls from ice and snow.
(b)
Run vehicle onto planks to prevent tires from freezing to ground. Block up bucket on SEE.
(c)
Clean wet snow or mud from tires and hydraulic cylinders before it freezes.
(d)
In extremely cold weather, notify unit maintenance to remove batteries and store in
moderately warm area. Have batteries installed just prior to starting engine.
b. Extreme Heat.
(1)
General. Check coolant temperature gage and warning light frequently for indication of
overheating. Allow engine to idle slowly when it is overheated until temperature is reduced as
indicated by normal condition of warning indicators. If indicators stay on after more than 10 minutes
of reduced workload, or alarm sounds, stop vehicle and notify unit maintenance.
(2)
Cooling System.
(a)
Check coolant at frequent intervals and keep expansion tank cap tight. Notify unit
maintenance if unusual coolant loss is noticed.
(b)
Make sure radiator is free of any blockage and obstructions.
(3)
Lubrication. Lubricate in accordance with page 2-70.1.
(4)
Air Cleaner. Check and clean air filter more frequently. Check air cleaner indicator frequently.
Clean dust discharge valve regularly and notify unit maintenance if filter needs replacement.
(5)
Parking and Non-Use. Park vehicle in a shaded area, if possible.
Change 2
2-139

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