TM 5-2350-262-10
Change 5 2-71
2
DOZER OPERATIONS - CONTINUED
ROUGH GRADING
1
Start engine (p 2-37) and allow it to warm up for
3 to 5 minutes; then drive vehicle to operation.
2
Place SPRUNG/UNSPRUNG control lever (1)
in UNSPRUNG position.
CAUTION
If ripper blade is installed, do not
rough grade through solid rock,
concrete, or asphalt or extensive
damage to scarifier teeth and dozer
bladewillresult.
3
Operate vehicle as scraper (p 2-65) to load
ballast.
Note
Insometerrainorsoilconditions,vehicle
maydigunevenlyornotmaintaincutswith
ripperbladeinstalled.
4
Operate vehicle as dozer (p 2-66) and lower
suspension to obtain desired depth of cut as
vehicle moves forward.
CAUTION
Track can be thrown if vehicle is backed
in UNSPRUNG mode. Do not make
any sharp turns when backing unless
suspension is in SPRUNG mode.
Failure to comply may result in damage
to equipment.
Note
•
Controls are in same positions for
rough grading, or back-blading, as
they are for straight dozing. Back-
blading is done in R1 or R2.
•
Warning buzzer will sound when
backing vehicle in UNSPRUNG mode.
5
To
back-blade
at
end
of
pass,
move
transmission shift lever (2) to R1 or R2.
Coordinate suspension control levers (3) to
keep dozer blade dragging on ground over
areas just dozed.
