Traction Circuit-Forward 4Wd Schematic - Textron JACOBSEN R-311 69166 Technical/Repair Manual

HYDROSTATIC POWER TRAIN
Traction Circuit—Forward 4WD
Schematic
See Figures 5-10 and 5-12.
1 2
Gear Pump
0.77 ci 1.04 ci
5
Tank Fill Cap
Assembly
40 Micron
Filter
560 Micron
Strainer
1 Operating Pressure Oil to Control Valve
(Port P)
2 Operating Pressure Oil to Front Axle Motor
and 4WD Valve (Port A)
5-20
3 4
2.48 ci 2800 ±50 RPM
1.04 ci 1.04 ci
Suction
Strainer
Hydraulic Oil Tank
Inlet or Drain Oil
3 Charge Pressure Oil from Front Axle Motor
and 4WD Valve (Port B)
4 Case Drain Oil from Front Axle Motor
3500 psi
Check
Valve
Check
Valve
3500 psi
Hydrostatic Traction Pump
10 Micron
Filter
Charge
Filter
Steering Unit
P
Relief Valve
1500 psi
T
Operating Pressure Oil
Figure 5-10
A
B
25 psi
Switch
25 psi
Crack
Bypass
Steering
Valve
Check
RT
Valve
6.1 ci
LT
Steering
Cylinder
Charge Pressure Oil
5 Charge Pressure Oil to Control Valve (Port
F) and 4WD Valve (Port C)
6 Charge Pressure Oil from Control Valve
(Port ST)
4203781 First Edition
1
2
3
4
5
6
TN2318