TM 5-3805-248-10
OPERATION UNDER USUAL CONDITIONS - CONTINUED
0005 00
LOADING SCRAPER - CONTINUED
CAUTION
Do NOT place differential lock control in LOCK position while a wheel is spinning. Do NOT turn machine
with differential locked. Turning machine with differential locked will cause excessive slip and wear to
tires; torque wrap in transmission will also cause tractor to "hop."
NOTE
Maintain engine RPM high (not to exceed 2,450 RPM) for fast hydraulic action. Maintain proper gear to
prevent tire slip in rocky or abrasive material.
6.
As required, move differential lock control to LOCK position.
7.
Select appropriate speed for material being loaded.
a.
Use low speed for hard or coarse material.
b.
Use high speed for soft material.
8.
Maintain engine speed when cutting.
NOTE
Cut should be shallow enough for machine to move ahead at a constant speed. If cut is too deep, engine will
labor or lug down. Excessive tire slippage may occur.
Depth of cut can be gauged by observing depth of penetration of side router bits.
9.
Lower bowl to cutting depth that is efficient for loading material and start cut.
a.
Decrease cutting depth if engine begins to labor or if tires slip.
b.
10. Drive machine in a straight line during cut.
11. Regulate apron opening to prevent material from piling in front of cutting edge or falling out of bowl.
NOTE
Do NOT overload bowl. Stop cut when slight spillage of material is evident or when directed to do so by
supervisor.
12. When bowl is full, raise bowl slowly while you continue to drive forward in a straight line (this will result in a smoother
transition). Do NOT stop machine to raise bowl.
13. Close apron to reduce spillage.
14. Release transmission hold pedal.
15. If locked, release differential lock to UNLOCK position. Accelerate to traveling speed.
NOTE
Cutting edge is narrower than scraper bowl. Repeated cuttings within the same slot will result in bowl get-
ting jammed in slot. Minimum slot width should be about 1-1/2 machine width.
16. On successive passes at fill area, use straddle cutting to achieve the best results. Refer to Straddle Cutting in WP 0006 00
for further information.
0005 00-9
