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SECTION 9
9.1
END DUMP TRAILER OPERATING INSTRUCTIONS
9.1.1
Maximum permissible pump and hose pressure is 2000 psi.
9.1.2
Do not race engine or exceed rated pump rpm; fast idle is adequate.
9.1.3
Operator should remain at controls in cab while dumping and should control the raising and
lowering of hoist with valve instead of clutch or power take-off. Windmilling the pump while lowering
subjects it to unnecessary wear.
9.1.4
Operator should feather valve as hoist reaches top of stroke. Valve should be shifted to “hold” as
hoist reaches top of stroke to avoid shock loads in the hydraulic system. Relief valve is a safety
feature and should not be used in prolonged operation. Prolonged operation against relief valve will
damage pump.
9.1.5
DISENGAGE “POWER TAKE-OFF” WHEN DUMP CYCLE IS COMPLETE. RETURN PUMP
VALVE TO “HOLD” POSITION WHEN DUMP IS LOWERED AND IN TRAVELING POSITION.
9.1.6
TO AVOID TURNOVER OF TRAILER WHILE DUMPING, TRACTOR MUST BE LINED UP
STRAIGHT WITH TRAILER. TRACTOR AND TRAILER MUST BE ON FIRM AND LEVEL
GROUND.
9.1.7
AVOID DUMPING IN STRONG WIND. LINE TRAILER UP WITH WIND TO AVOID POSSIBLE
TURNOVER FROM CROSS WIND.
9.1.8
OPERATOR SHOULD WARN ALL PERSONS TO STAND CLEAR AT LEAST 35 FEET FROM
TRAILER WHILE DUMP IS BEING RAISED AND LOWERED.
9.1.9
SHOULD DUMP TRAILER START TO TILT, MOVE CONTROL IMMEDIATELY TO “LOWER”
POSITION.
9.1.10 THE HOIST IS NOT DESIGNED FOR HOLDING BOX IN ELEVATED POSITION FOR ANY
LENGTH OF TIME. WHEN BOX IS REQUIRED TO BE HELD IN THE ELEVATED POSITION FOR
MAINTENANCE, SERVICE WORK, OR FOR PURPOSES OTHER THAN DUMPING, THE BOX
SHOULD BE SECURED BY A OVERHEAD CRANE OR OTHER SAFETY DEVICE TO PREVENT
THE ACCIDENTAL LOWERING OF THE BOX.
9.1.11 There are two grade 5 shear bolts through the hoist bottom pivot pin. When a raised trailer tilts to
the side and turnover is occurring, these bolts shear to prevent the tractor from being turned over.
DUMP TRAILER OPERATION CAN BE DANGEROUS!
OPERATOR SHOULD BE ALERT AT ALL TIMES WHEN RAISING
TRAILER
,
AND WARN PERSONS TO STAND CLEAR!
