TM 5-3895-356-14&P
4. Check bitumeter. Use measured distance and stop watch Drive at
constant speed Bitumeter head may be checked at speedometer shop 1000 R.P
M - 1000 F.P.M.
5. Thumb button on quadrant lever must be down and engaged when
rotating from "Circulate m Bar" to "Distribute". On air control units, thumb button
should be held down with "T" shaped catch. On units with single control shaft,
pull engagement lever outward.
6. On single shaft controls, check to insure inside lever remains in the
"Circulate in Bar" position when hand control lever is moved to the "Distribute"
position after the engagement lever has been pulled to engage the outside lever.
One of the two conditions indicated below may cause inside lever not to remain
m "Circulate in Bar" position.
A. Set screws in the inside lever may have been turned m against the
center shaft. If so, back screws out until they engage the center tube
without contacting the center shaft.
B. Possibly, corrison between the outside tube, inside tube and center
shaft, may cause the inside lever to be pulled around with the outside
lever Lubrication between these shafts should overcome this difficulty.
7. On units with inside valve, handwheel must be rotated counterclockwise
to full open position.
8. Check discharge strainer on pump outlet.
9. Engine governor or hydrostatic control knob must be firmly positioned.
Bitumen pump output must be established when circulating in tank
10. Quadrant levers and shafts must operate freely and not cause
abnormal movement of other components.
IF PUMP WILL NOT TURN OR
1. Asphalt material below pumping temperature
TURNS SLOWLY:
2. Air leak in suction line from reservoir to filter to inlet of charge pump on
back of hydraulic pump
3. Defective pump or motor, check for excessive case drain
4. Hydraulic system pressure low, raise pressure
5. Low oil level in reservoir
6. Spray bar control valves set improperly.
IF HYDRAULIC OIL OVERHEATS:
1. Asphalt material below pumping temperature
2. Air leak m suction line from reservoir to filter to inlet of charge pump on
back of hydraulic pump.
3. Low oil level in reservoir
4. Spray bar control valves set Improperly
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