HYDRAULICS
4203780 First Edition 6-3
6
Specifications
Test and Adjustment Specifications
Repair Specifications
Specifications
Front Cutting Unit Pump Flow gpm (Lpm) 13 (49.2) at 2800 rpm
Left Wing Cutting Unit Pump Flow
gpm (Lpm) 13 (49.2) at 2800 rpm
Right Wing Cutting Unit Pump Flow
gpm (Lpm) 13 (49.2) at 2800 rpm
Lift/Steer Pump Flow
gpm (Lpm) 7.9 (30) at 2800 rpm
Hydraulic Leakage Percentage Ranges 0—10% = Good
11—20% = Marginal
21% and Beyond = Bad
Lift System Relief Valve Pressure
Setting
psi (bar) 1500 (103)
Steer System Relief Valve Pressure
Setting
psi (bar) 1500 (103)
Front Cutting Unit Deck Valve System
Relief Valve Pressure Setting
psi (bar) 2700—3300 (186—228)
Left Wing Cutting Unit Deck Valve
System Relief Valve Pressure Setting
psi (bar) 2700—3300 (186—228)
Right Wing Cutting Unit Deck Valve
System Relief Valve Pressure Setting
psi (bar) 2700—3300 (186—228)
Cutting Unit Motor Case Drain Rate Less than 1 pint (0.47 L) per minute at 2000 psi
(138 bar)
Specifications
Gear Pump—Rear Cover-to-Pump Body
Bolt Torque
lb-ft (N·m) 20 (27)
Mow Solenoid Valve Torque
lb-ft (N·m) 24—26 (32.5—35.3)
Mow Solenoid Valve Nut Torque
lb-ft (N·m) 5—7 (6.8—9.5)
Blade Brake Relief Valve Torque
lb-ft (N·m) 33—37 (44.7—50.2)
Deck Valve System Relief Valve Torque
lb-ft (N·m) 24—26 (32.5—35.3)
Hydraulic Oil Tank Capacity
gal (L) 17 (64.3)
Front Lift Cylinder Rod Nut Torque
lb-ft (N·m) 50 (68)
Wing Lift Cylinder Rod Nut Torque
lb-ft (N·m) 95 (129)
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