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Figure 3. Military 621G Scraper (Engine Compartment).
Figure 4. Military 621G Scraper (Right Rear Scraper).

Field Maintenance Manual For Military 621G Scraper -1 Page Navigation
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TM 5-3805-296-23-1
0002
LOCATION AND DESCRIPTION OF MAJOR COMPONENTS CONTINUED
KEY
COMPONENT
DESCRIPTION
1
Engine Air Precleaner
Removes debris from incoming air to engine.
2
Engine Air Filter Housing
Houses primary and secondary engine air filters.
3
Radiator
Stores and cools engine coolant.
4
Engine
Acert C15, 6 cylinder diesel engine provides power to tractor.
5
Drive Belt
Transfers engine crankshaft rotation to rotate and power the
alternator and air conditioner compressor.
6
Engine Oil Filter
Filters contaminants from engine oil.
7
Primary Fuel Filter
Filters water and sediment from fuel system.
8
Secondary Fuel Filter
Filters contaminants from fuel system
9
Turbocharger
Exhaust gases flow into the turbine side of turbocharger and
turns the turbine wheel. The turbine wheel is connected to the
shaft that drives the compressor wheel. Exhaust gases pass
out through the muffler and exhaust pipe.
The compressor wheel pulls air in through the air cleaners.
The hot air flows through the after cooler core where the air
temperature is lowered. The cooler air is forced into the inlet
manifold, then to the engine cylinders.
0002-7


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