Holder 4.74 manual Turning off the implement variable-displacement Pump

Operating instructions

Operating the implements

C 4.74

NOTE

C4.74 Variable-displacement pump

The implement variable-displacement pump		105																100 litres
		100
attempts to maintain the oil flow specified by		95																90 litres
		90
the coded plug and potentiometer, even when	[litres]	85																80 litres
		75
the engine speed is reduced.		80
	Displacement	70																70 litres
The oil flow is only reduced at lower rpm when
		65																60 litres
the maximum swash angle of the pump is		60
		55																50 litres
reached (see diagram).		50
		45
ATTENTION		40
		30
If the implement is not in use, turn the pump		20
		0
off with the safety switch to prevent any un-		1100	1200	1300	1400	1500	1600	1700	1800	1900	2000	2100	2200	2300	2400	2500	2600	2650
								Engine RPM [1/min]
necessary overheating of the hydraulic oil.																		Bild_C278_GB
Turning off the implement variable-displacement
pump										5			6

-Turn the safety switch (6) off. The indicator in the switch extinguishes.

NOTE

If you shut down the engine without first turn- ing off the implement variable-displacement pump, the pump can not immediately be turned on again on for safety reasons.

Before a new start you must first either:

-set the rotary knob to 0, or

-turn the safety switch off and on again once,

Bild_C185

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