Service Manual

9P Series
HYDRAULIC SCHEMATIC
Figure 8. PW / PY Series Pump With Standard Charge Pump
Figure 9. PW / PY Series Pump With Auxiliary Charge Pump
Orice size
No Bleed
.024 Bleed
.031 Bleed
.044 Bleed
Relief pressure (psi)
Check ball
1740
2320
2900
Relief pressure (bar)
Check ball
120
160
200
System Check & Relief Valve Options
Orice size
No Bleed
.024 Bleed
.031 Bleed
.044 Bleed
Relief pressure (psi)
Check ball
1740
2320
2900
Relief pressure (bar)
Check ball
120
160
200
System Check & Relief Valve Options
650 PSI
AUXILIARY
DISCHARGE
AUXILIARY
DISCHARGE
AUXILIARY
RETURN
AUXILIARY
RETURN
CHARGE PUMP
INLET
CHARGE
DIAGNOSTIC
CHG
REL
PORT “A”
PORT “B”
BYPASS VALVE
BLEED OPTIONS
1) NO BLEED ORIFICE
2) .031” BLEED ORI-
FICE
BYPASS VALVE
BLEED OPTIONS
1) NO BLEED ORIFICE
2) .031” BLEED ORIFICE
OR
OR
PORT “A”
PORT “B”
CHARGE PUMP
INLET
CHARGE DIAGNOSTIC