5-8 4203780 First Edition
HYDROSTATIC POWER TRAIN
5
Traction Circuit—Neutral Schematic
See Figures 5-4 and 5-5.
Figure 5-4
1 Operating Pressure Oil to Control Valve
(Port P)
3 Charge Pressure Oil from Front Axle Motor
and 4WD Valve (Port B)
5 Charge Pressure Oil to Control Valve (Port
F)
2 Charge Pressure Oil to Front Axle Motor
and 4WD Valve (Port A)
4 Case Drain Oil from Front Axle Motor 6 Charge Pressure Oil from Control Valve
(Port ST)
TN1730
Operating Pressure Oil
Charge Pressure Oil
Inlet or Drain Oil
10 Micron
Hydrostatic Traction Pump
IN
Steering
Cylinder
Gear Pump
0.65 ci
3500 psi
1.08 ci
Suction
Strainer
25 psi
Switch
Hydraulic Oil Tank
25 psi
Crack
Bypass
Tank Fill Cap
Assembly
40 Micron
Filter
1.08 ci
1.08 ci
2.48 ci
3500 psi
560 Micron
Strainer
1
2
3
4
5
6
Charge
Filter
Relief Valve
1450 psi
Steering Unit
OUT
LT
6.6 ci
RT
Steering
Valve Body
Check
Valve
Check
Valve
Check
Valve
A
B
1234
2800 ±50 RPM
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