Installing Hydraulic Hoses And Tubes (O-Ring Face Seal Fitting) - Toro Sand Pro 3040 Service Manual

Installing Hydraulic Hoses and Tubes (O-Ring Face Seal Fitting)

Sand Pro ® 3040 and 5040
20251SL Rev A
g212099
1. Tube or hose 2.
1. Ensure that all the threads, the sealing surfaces of the hose/tube, and the
fitting are free of burrs, nicks, scratches, or unwanted material.
2. To help prevent a hydraulic leak, replace the face seal O-ring when you open
the connection. Ensure that the O-ring is installed and correctly seated in the
groove of the fitting. Lightly lubricate the O-ring with clean hydraulic fluid.
3. Align the hose/tube against the body of the fitting so that the flat face of the
hose/tube sleeve fully touches the O-ring in the fitting
4. Use your hand to thread the swivel nut onto the fitting. While you hold the
hose/tube in alignment with a wrench, use a torque wrench to tighten the
swivel nut to the recommended torque value within the specified range of
torque values; refer to the
This procedure to tighten the swivel nut requires a drive-adapter wrench
(e.g., crowfoot wrench).
Note: It may be necessary to use a drive-adapter wrench (e.g., crowfoot
wrench) to install a hydraulic fitting; refer to
When Using a Drive-Adapter Wrench (page
g212098
1. Mark nut and fitting body
Hose/Tube Installation Torque Table
Fitting Dash Size
4
6
8
10
Figure 19
Swivel nut 3. O-ring
Hose/Tube Installation Torque Table (page
Figure 20
2. Initial position
Hose/Tube Side Thread Size
(inch)—threads per inch)
9/16—18
11/16—16
13/16—16
1—14
Page 5–7
4. Fitting body
(Figure 19).
Calculating the Torque Values
2–6).
3. Final position
Installation Torque
25 to 29 N∙m (18 to 22 ft-lb)
37 to 44 N∙m (27 to 33 ft-lb)
51 to 63 N∙m (37 to 47 ft-lb)
82 to 100 N∙m (60 to 74 ft-lb)
Hydraulic System: General Information
5–7).