Toro Groundmaster 31900, Руководство по обслуживанию

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Installing Hydraulic Hoses and Tubes (O-Ring Face Seal Fitting)
(continued)
Hose/Tube Installation Torque Table (continued)
Fitting Dash Size
Hose/Tube Side Thread Size
(inch)—threads per inch)
Installation Torque
12 1–3/16—12 116 to 142 N∙m (85 to 105 ft-lb)
16 1–7/16—12 150 to 184 N∙m (110 to 136 ft-lb)
20 1–11/16—12 190 to 233 N∙m (140 to 172 ft-lb)
Flats From Wrench Resistance Table
Size FFWR
4 (1/4 inch nominal hose or tubing) 1/2 to 3/4
6 (3/8 inch) 1/2 to 3/4
8 (1/2 inch) 1/2 to 3/4
10 (5/8 inch) 1/2 to 3/4
12 (3/4 inch) 1/3 to 1/2
16 (1 inch) 1/3 to 1/2
5. If a torque wrench is not available or if space at the swivel nut prevents the
use of a torque wrench, use the alternative procedure Flats From Wrench
Resistance (FFWR) given below:
A. Use a wrench to tighten the swivel nut onto the fitting until you feel light
resistance with the wrench—approximately 3.4 N∙m (30 in-lb) .
B. Put a mark on the swivel nut and body of the fitting (item 1 Figure 20 ). If
connecting a hose, hold the hose in alignment with a wrench to prevent
the hose from turning.
C. Use a wrench to tighten the nut to the correct Flats From Wrench
Resistance (compare items 2 and 3 in Figure 20 ).
Hydraulic System: General Information Page 5–8 Groundsmaster ® 3200, 3300 and 3310
19240SL Rev A