TM 5-3805-261-20
PRINCIPLES OF OPERATION.
1-13.
130G GRADER.
p.
Body, Chassis and Hull Accessory Items. Windshield wipers, windshield washers, horn, side mirrors,
defrosting fan, heater.
q.
Hydraulic System. A main hydraulic pump driven by the engine provides power for steering and
earthmoving equipment operation. A battery powered hydraulic supplemental steering pump provides emergency steering
power.
r.
Gages and Indicators (Non-electrical).
(1)
Air cleaner indicator. 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.
(2)
Air pressure gages. Mounted in a small instrument panel at the upper right hand forward section of the
engine hood. Indicate amount of air pressure in each section of the air tank.
(3)
Articulation indicator. Mounted at the top of the steering console. It shows how far from the straight
position the frame has been pivoted.
(4)
Centershift indicator. Mounted at the right hand centershift pivot point. Refer to paragraph 1-10 for
location. Guides operator in moving centershift lock pin to new position.
(5)
Coolant level indicator. Located within the radiator coolant fill opening. Maintain coolant level between
the low and full coolant level indicator marks in the filler opening.
(6)
Hydraulic reservoir sight gage. Position half way up the left side of the hydraulic reservoir which is
located directly to the rear of the cab.
(7)
Tandem housing dipstick assembly. Located on top of forward ends at tandem housings.
(8)
Engine oil dipstick assembly. Located at the left side of the engine.
(9)
Transmission and differential dipstick assembly. Located inside of left rear engine hood access door.
(10) Fuel level dipstick. Located within the fuel fill opening.
s.
Blade. Hydraulically controlled side shift, tip, centershift, circle and blade float. Additional manually adjusted
sideshift. The drawbar is attached to a ball joint at the front of the vehicle.
t.
Scarifier Assembly. Assembly is located forward of the blade. It is hydraulically raised and lowered, and the
drawbar attaches to the front of the vehicle.
1-21
