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Figure 1. Military 621G Scraper (Left Rear Tractor).
Figure 2. Military 621G Scraper (Right Rear Tractor).

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
Steering Cylinder
Two hydraulic cylinders provide right or left turns with
articulated frame steering system.
2
Apron Arm
Raises and lowers apron as applied by apron lift cylinder.
3
Apron Cylinder
Hydraulic cylinder raises and lowers apron arm assembly.
4
Bowl Cylinder
Two hydraulic cylinders raise and lower bowl.
5
Draft Frame
Main point of attachment for apron cylinder and assembly,
bowl cylinders, and bowl assembly to tractor. Junction where
all steering is accomplished through movement of steering
cylinders.
6
Hydraulic Oil Filter
Filters contaminants from hydraulic system oil.
7
Transmission Oil Pump
Pumps transmission fluid through transmission.
8
Transmission Oil Filter
Filters contaminants from transmission system oil.
9
Cushion-Hitch area
Hitch assembly is connected to the tractor.
Bracket assembly is attached to the scraper.
Connector point between tractor and scraper.
0002-3


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