Komatsu PC500LC-10R Shop Manual page 68

STANDARD TIGHTENING TORQUE TABLE
Thread diam-
Nominal No.
eter ( mm)
18 18
20 20
24 24
30 30
33 33
36 36
42 42
52 52
Table of tightening torque for hose (taper seal type and face seal type)
REMARK
• Tighten the hose fittings (taper seal type and face seal type) to the torque shown in the following table un-
less otherwise specified.
• The table is applied to the threaded portion coated with engine oil (wet threaded portion).
Width
Nominal
across
No. of
flats
hose
( mm)
02 19
22
03
24
04 27
05 32
06 36
(10) 41
(12) 46
(14) 55
00-66
Width across
flats ( mm)
27
30
32
32
- 107.8 to 147.0 {11.0 to 15.0}
36 127.4 to 176.4 {13.0 to 18.0}
- 181.3 to 240.1 {18.5 to 24.5}
- 274.4 to 367.5 {28.0 to 37.5}
Tightening torque ( Nm { kgm} )
Range
34 to 54 {3.5 to 5.5}
34 to 63 {3.5 to 6.5}
54 to 93 {5.5 to 9.5}
59 to 98 {6.0 to 10.0}
84 to 132 {8.5 to 13.5}
128 to 186 {13.0 to 19.0}
177 to 245 {18.0 to 25.0}
177 to 245 {18.0 to 25.0}
197 to 294 {20.0 to 30.0}
246 to 343 {25.0 to 35.0}
Tightening torque ( Nm { kgm} )
Range
34.3 to 44.1 {3.5 to 4.5}
44.1 to 53.9 {4.5 to 5.5}
58.8 to 78.4 {6.0 to 8.0}
93.1 to 122.5 {9.5 to 12.5}
Taper seal
Thread size
Target
( mm)
44 {4.5}
44 {4.5}
74 {7.5}
78 {8.0}
103 {10.5}
157 {16.0}
216 {22.0}
216 {22.0}
245 {25.0}
294 {30.0}
00 INDEX AND FOREWORD
Target
39.2 {4.0}
49.0 {5.0}
68.6 {7.0}
107.8 {11.0}
127.4 {13.0}
151.9 {15.5}
210.7 {21.5}
323.4 {33.0}
Face seal
Nominal size -
threads per
inch
9
- / -18UN
16
14 -
11
- / -16UN
16
18 -
13
22 / -16UN
16
24 1 -14UNS
3
30 1 / -12UN
16
33 -
36 -
42 -
Thread root
diameter( mm)
(reference)
14.3
-
17.5
-
20.6
25.4
30.2
-
-
-
PC500LC-10R