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MODEL 66-80 VIBRATORY DRIVER/EXTRACTOR
V. HYDRAULIC CIRCUITRY
C. OTHER
Returning oil is filtered by the RETURN FILTER (F2). The return FILTER CHECK
VALVES (CV1 and CV2) prevents oil loss from the reservoir when the filter
elements are removed.
A manual PUMP (MP) is provided to fill the hydraulic reservoir. A CHECK VALVE
(CV8) prevents loss of returning hydraulic oil back through this pump.
Temperature of the oil in the reservoir is continually sampled by the hydraulic oil
Temperature Switch Gage (TS2), which shuts down the diesel engine if the oil
temperature exceeds 160°F (71°C).
Motor cavitation is prevented in the braking operation by the CHECK VALVE
(CV6).
The (ACC-1) in the pilot system expands as pressure increases. The additional
pilot flow causes cartridge (C2) to produce a smooth acceleration of the
VIBRATOR MOTORS (M).
V-3