SECTION 4 - BASIC HYDRAULIC INFORMATION & SCHEMATICS
4-8
31215079
NOTE:
For internal hydraulic circuits Figure 4.32 on Page 4.42.
Table 4-1. Main Valve Port Identification
Port
Functionality
To Port
L1
To Lift Cylinder
Lift Cylinder
L2
To Lift Cylinder
Lift Cylinder
T3
Main RT Valve (Left Side)
T - Outrigger Valve
P1
Main RT Valve (Left Side)
Outlet - Tandem Gear Pump
S1
Main RT Valve (Left Side)
Steer Cylinder
S2
Main RT Valve (Left Side)
Steer Cylinder
G
Main RT Valve (Left Side) (Tee at Port)
P - Axle Lockout Valve
M3 - Axial Pump
2S2
Main RT Valve (Left Side)
Union Tee
T1
Main RT Valve (Left Side)
Return to Tank
T2
Main RT Valve (Right Side)
12 - Flow Divider
P2
Main RT Valve (Right Side)
LP - Leveling Jack Valve
PS
Main RT Valve (Right Side)
Outlet - Tandem Gear Pump
MS
Main RT Valve (Right Side)
Diagnostic Port
MP1
Main RT Valve (Right Side)
Diagnostic Port
Table 4-2. Main Valve Torque Specs (All Specs Except CE)
Component
Functionality
Torque
RV2
Manifold Relief Valve
19 - 21ft. lb.
RV1
Lift Circuit Relief Valve
25 ft. lb.
LS1
Steer Cylinder Shuttle Valve
20 ft. lb.
CV3
Lift Cylinders Tank Port Check Valve
24 - 26ft. lb.
SV7
Lift Pump Unloader Valve (Dump)
24 - 26ft. lb.
SV6
24 - 26ft. lb.
SV5
19 - 21ft. lb.
SV4
Hydraulic Brakes
19 - 21ft. lb.
SV3
Motors 2 Speed Control
19 - 21ft. lb.
SV2
Steer Valve
24 - 26ft. lb.
SV1
Lift Up Valve
24 - 26ft. lb.
S1-S5
Coil 4304112
7.1 Ohm @20°C
8.5 ft. lb.
S6-S8
Coil 4304012
8.8 Ohm @20°C
4.5 ft. lb.
PLG6
23ft.lb.
PLG4
13ft.lb.
Table 4-3. Main Valve Porting Specs
Port
Size
P1,L2,T1 & PS
SAE 10
L1
SAE 08
G, P2,P3,T2,T3 & T4
SAE 06
All Others
SAE 04
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