TM 5-3805-261-23-1
THEORY OF OPERATION - CONTINUED
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130G GRADER - CONTINUED
0003 00
m.
Frame, Towing Attachments, Drawbars, and Articulation System. A frame and case at the rear section of the
machine serves as a mounting for the engine, rear wheels, and drive train. A front frame section serves as a mount-
ing for the cab, earthmoving components, and front wheels. The two sections are articulated (hinged) at the center
of the machine. The angle of articulation is controlled by hydraulic cylinders driven by the main hydraulic pump.
There is a tow pin at each end of the machine.
Cab and Hood. A low profile ROPS (Rollover Protective Structure) cab protects operator from dust, sound, and
n.
weather. It also houses the controls and instrumentation. An engine and radiator hood with side door assemblies
provides sound suppression and weather protection.
o.
Bumper. One bumper equipped with a towing pin is located at the rear of the machine.
Body, Chassis, and Hull Accessory Items. Selected accessory items are windshield wipers, windshield washers,
p.
horn, side mirrors, defrosting fan, and heater.
Hydraulic System. A main hydraulic pump driven by the engine provides power for steering and earthmoving
q.
equipment operation. A battery powered hydraulic supplemental steering pump provides emergency steering
power.
r.
Nonelectrical Gauges, Indicators, and Dipsticks:
(1)
Air Cleaner Indicator. Indicator is mounted at the right side of the engine on the air inlet pipe elbow
between the air filter and the turbocharger. When it shows red, the cleaner elements need cleaning or
replacing.
Air Pressure Gauges. Gauges are mounted in a small instrument panel at the upper-right hand forward sec-
(2)
tion of the engine hood. They indicate amount of air pressure in each section of the air tank.
Articulation Indicator. Indicator is mounted at the top of the steering console. It shows how far from the
(3)
straight position the frame has been pivoted.
(4)
Centershift Indicator. Indicator is mounted at the right hand centershift pivot point. It guides operator in
moving centershift lock pin to new position.
Coolant Level Indicator. Indicator is located within the radiator coolant fill opening. It maintains coolant
(5)
level between the low and full coolant level indicator marks in the filler opening.
Hydraulic Reservoir Sight Gauge. Gauge is positioned half way up the left side of the hydraulic reservoir
(6)
which is located directly to the rear of the cab.
Tandem Housing Dipstick Assembly. Dipstick is located on top of forward ends at tandem housings.
(7)
(8)
Engine Oil Dipstick Assembly. Dipstick is located at the left side of the engine.
Transmission and Differential Dipstick Assembly. Dipstick is located inside of left-rear engine hood
(9)
access door.
Fuel Level Dipstick. Dipstick is located within the fuel fill opening.
(10)
s.
Blade. Hydraulically controlled side shift, tip, centershift, circle and blade float with additional manually adjusted
sideshift. The drawbar is attached to a ball joint at the front of the machine.
Scarifier Assembly. Assembly is located forward of the blade. It is hydraulically raised and lowered, and the
t.
drawbar attaches to the front of the machine.
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