Komatsu PC500LC-10R Shop Manual page 69

00 INDEX AND FOREWORD
Table of tightening torque for face seal joints
REMARK
• The tightening torque table below applies to the seal joint (sleeve nut type) made with steel pipe for plated
low pressure piping which is used for engine.
• The table is applied to the threaded portion coated with engine oil (wet threaded portion).
• Reference: The face seal joint of the dimension in ( ) is also used depending on the specification.
Outside di-
Width
ameter of
across flats
adequate
( mm)
pipe ( mm)
8 19
10 22
12 24 (27)
15 (16) 30 (32)
22 (20) 36
Tightening torque table for bolts and nuts on 102, 107 and 114 series engines
REMARK
Tighten the metric threads bolts and nuts used on the 102, 107 and 114 series engines to the torques shown in
the following table unless otherwise specified.
Thread diameter ( mm)
6
8
10
12
14
Tightening torque table for 102, 107, and 114 series engines (joint bolts)
REMARK
Tighten the metric joint bolts used on the 102, 107, and 114 series engines to the torque shown in the following
table unless otherwise specified.
PC500LC-10R
Tightening torque ( Nm { kgm} )
Range
14 to 16 {1.4 to 1.6}
24 to 27 {2.4 to 2.7}
43 to 47 {4.4 to 4.8}
60 to 68 {6.1 to 6.8}
90 to 95 {9.2 to 9.7}
STANDARD TIGHTENING TORQUE TABLE
Nominal size -
Target
threads per inch
9
15 {1.5}
/
16
11
25.5 {2.6}
/
16
13
45 {4.6} /
16
64 {6.5} 1 -14UNS
3
92.5 {9.4} 1 /
16
Tightening torque ( Nm { kgm} )
10±2 {1.02±0.20}
24±4 {2.45±0.41}
43±6 {4.38±0.61}
77±12 {7.85±1.22}
-
Face seal
Thread root diam-
eter( mm) (refer-
ence)
14.3
-18UN
17.5
-16UN
-16UN 20.6
25.4
-12UN 30.2
00-67