Hydraulics - Jacobsen R-311T Technical/Repair Manual

SPECIFICATIONS AND GENERAL INFORMATION
Repair Specifications
Front Axle Motor—Backplate Assembly Screw Torque
Front (Drive) Axle Assembly—U-Bolt Nut Torque
Front Axle—Ring Gear Screw Torque
Front Axle—Pinion Nut Torque
Front Axle—Pinion Rotation Torque
Front Axle—Bearing Cap Screw Torque
Front Axle—Backlash Tolerance
Front Axle—Differential Cover Screw Torque
2
Rear Wheel Motor—Valve Housing Screw Torque
Rear Wheel Motor Hub Nut Torque

Hydraulics

Test and Adjustment Specifications
Front Cutting Unit Pump Flow
Left Wing Cutting Unit Pump Flow
Right Wing Cutting Unit Pump Flow
Lift/Steer Pump Flow
Hydraulic Leakage Percentage Ranges
Lift System Relief Valve Pressure Setting
Steer System Relief Valve Pressure Setting
Front Cutting Unit Deck Valve System Relief Valve
Pressure Setting
Left Wing Cutting Unit Deck Valve System Relief Valve
Pressure Setting
Right Wing Cutting Unit Deck Valve System Relief
Valve Pressure Setting
Cutting Unit Motor Case Drain Rate
Repair Specifications
Gear Pump—Rear Cover-to-Pump Body Bolt Torque
Mow Solenoid Valve Torque
Mow Solenoid Valve Nut Torque
Blade Brake Relief Valve Torque
Deck Valve System Relief Valve Torque
Hydraulic Oil Tank Capacity
Front Lift Cylinder Rod Nut Torque
Wing Lift Cylinder Rod Nut Torque
2-6
15–18 (20–24)
lb-ft (N·m)
lb-ft (N·m)
45–60 (61–81)
lb-ft (N·m)
200–220 (271–298)
lb-ft (N·m)
20–40 (2.3–4.5)
lb-in (N·m)
70–90 (95–122)
lb-ft (N·m)
inch
30–40 (41–54)
lb-ft (N·m)
lb-ft (N·m)
175–200 (237–271)
lb-ft (N·m)
12.2 (46.2) at 2800 rpm
gpm (lpm)
12.2 (46.2) at 2800 rpm
gpm (lpm)
12.2 (46.2) at 2800 rpm
gpm (lpm)
9.1 (34.5) at 2800 rpm
gpm (lpm)
0–10% = Good
11–20% = Marginal
21% and beyond = Bad
psi (bar)
psi (bar)
2700–3300 (186–228)
psi (bar)
2700–3300 (186–228)
psi (bar)
2700–3300 (186–228)
psi (bar)
Less than 1 pint (0.47 L) per minute at
2000 psi (138 bar)
lb-ft (N·m)
24–26 (32.5–35.3)
lb-ft (N·m)
lb-ft (N·m)
33–37 (44.7–50.2)
lb-ft (N·m)
24–26 (32.5–35.3)
lb-ft (N·m)
gal (L)
lb-ft (N·m)
lb-ft (N·m)
50 (67.8)
.005–.008
36–37 (49–50)
1500 (103)
1500 (103)
20 (27)
5–7 (6.8–9.5)
17 (64.3)
50 (68)
95 (129)
4234520 First Edition