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MODEL 44-50
VIBRATORY
DRIVER/EXTRACTOR
V.
HYDRAULIC CIRCUITRY
C. AUGER DRIVE
To convert the 580 Power Unit to operate an J&M, or similar, Bi-Directional Drill re-adjust
RELIEF VALVES (RV-1 & RV4) to forward & reverse pressure specifi ed for Auger, and re-
set RELIEF VALVE (RV-2), if necessary, for two speed signal.
See J&M Auger Manuals for description of Hydraulic Control Manifold operation, in the
"Auger Mode".
D. OTHER
Returning fl uid is fi ltered by the RETURN FILTER (F2). INDICATOR GAGE (GA5) shows
condition of FILTER (F2).
A manual PUMP (MP) is provided to fi ll the hydraulic reservoir. A CHECK VALVE (CV4)
prevents loss of fl uid from the reservoir back through this pump.
A TEMPERATURE SWITCH (TS) located in the reservoir operates the hydraulic fl uid cold
light.
The HEAT EXCHANGER (HE) cools the hydraulic fl uid returning to the reservoir. The Heat
Exchanger is part of the Tripple Core Cooler.
Motor cavitation is prevented in the braking operation by the CHECK VALVE (CV6).
Extra Long ACCUMULATOR HOSE (AC) in pilot system expands as pressure increases.
The additional pilot fl ow causes (CA2) to produce a smooth acceleration of VIBRATOR
MOTOR (M).
INSTRUCTIONS
V-3
OPERATING
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