Toro Groundmaster 31900, Руководство по обслуживанию

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Installing an Adjustable Fitting (continued)
A. Hold the fitting in the correct alignment with a wrench and use a torque
wrench and tighten the lock nut to the recommended torque value within
the specified range of torque values; refer to the
Fitting Installation Torque
Table (page 5–11) . This tightening procedure requires a drive-adapter
wrench (e.g., crowfoot wrench); refer to Calculating the Torque Values
When Using a Drive-Adapter Wrench (page 2–8) .
B. If a torque wrench is not available or if space at the port prevents the use
of a torque wrench, hold the fitting in the correct alignment with a wrench
and tighten the lock nut with a second wrench.
C. If the port material is steel, tighten the fitting to the listed Flats From
Finger Tight (FFFT) value; refer to the Flats From Finger Tight (FFFT)
Table (page 5–11) .
D. If the port material is aluminum, tighten the fitting to 60% of the listed
FFFT value; refer to the Flats From Finger Tight (FFFT) Table (page
5–11) .
Fitting Installation Torque Table
Fitting Dash Size Fitting Port Side Thread
Size (inch)—threads
per inch)
Installation Torque Into
Steel Port
Installation Torque Into
Aluminum Port
4 7/16—20 21 to 25 N∙m (15 to 19 ft-lb) 13 to 15 N∙m (9 to 11 ft-lb)
5 1/2—20 25 to 29 N∙m (18 to 22 ft-lb) 15 to 20 N∙m (11 to 15 ft-lb)
6
9/16—18 47 to 56 N∙m (34 to 42 ft-lb) 28 to 35 N∙m (20 to 26 ft-lb)
8 3/4—16 79 to 97 N∙m (58 to 72 ft-lb) 48 to 58 N∙m (35 to 43 ft-lb)
10 7/8—14 135 to 164 N∙m (99 to 121 ft-lb) 82 to 100 N∙m (60 to 74 ft-lb)
12 1–1/16—12 182 to 222 N∙m (134 to 164 ft-lb) 110 to 134 N∙m (81 to 99 ft-lb)
14 1–3/16—12 217 to 265 N∙m (160 to 196 ft-lb) 131 to 160 N∙m (96 to 118 ft-lb)
16 1–5/16—12 274 to 336 N∙m (202 to 248 ft-lb) 165 to 202 N∙m (121 to 149 ft-lb)
20 1–5/8—12 335 to 410 N∙m (247 to 303 ft-lb) 202 to 248 N∙m (149 to 183 ft-lb)
Flats From Finger Tight (FFFT) Table
Size FFFT
4 (1/4 inch nominal hose or tubing) 1.00 ± 0.25
6 (3/8 inch) 1.50 ± 0.25
8 (1/2 inch)
1.50 ± 0.25
10 (5/8 inch) 1.50 ± 0.25
12 (3/4 inch) 1.50 ± 0.25
16 (1 inch) 1.50 ± 0.25
Groundsmaster ® 3200, 3300 and 3310 Page 5–11 Hydraulic System: General Information
19240SL Rev A