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TEST NO. 2: Charge Relief Valve (R2) and Implement Relief Valve (R1) Pressure
A
P1
B
P2
R2
R1
IMPLEMENT
RELIEF
CHARGE
RELIEF
CHARGE
CHECK
CHARGE
CHECK
CHARGE
PUMP
TRACTION
PUMP
FROM
SHUTTLE
TO
LIFT
FROM
OIL
COOLER
PRESSURE
GAUGE
HYDROSTAT
FORWARD
ACCELERATION
VALVES
VALVE
VALVE
VALVE
VALVE
FILTER
TANK
FROM
WHEEL
MOTORS
TO
WHEEL
MOTORS
1
2
3
Figure 13
1. Charge test port (SP 2020/3020) 2. Engine base plate (SP 2020/3020) 3. Charge test port (SP 5020)
Hydraulic System (Rev. A) Page 4 – 22 Sand Pro 2020/3020/5020