Komatsu 75001, Shop Manual

Page: 49 / 1293

SEN03823-01
00-200
34
WA250, 250PX-6
200 Foreword and general information
Standard tightening torque table
5. Table of tightening torques for hoses (taper seal type and face seal type)
a
Unless there are special instructions, tighten the hoses (taper seal type and face seal type) to the
torque below.
a
Apply the following torque when the threads are coated (wet) with engine oil.
6. Table of tightening torques for face seal joints
a
Tighten the face seal joints (sleeve nut type) made of plated steel pipes for low pressure service to
be used for engines etc. to the torque shown in the following table.
a
Apply the following torque to the face seal joint while their threaded parts are coated with engine oil
(wetted).
Reference: The face seal joints of the dimensions in ( ) are also used, depending on the specification.
7. Table of tightening torques for 102, 107 and 114 engine series (Bolts and nuts)
a
Unless there are special instructions, tighten the metric bolts and nuts of the 102, 107 and 114
engine series to the torque below.
Nominal
No. of
hose
Width
across
flats
Tightening torque Nm {kgm} Taper seal Face seal
Range Target
Thread size
(mm)
Nominal No. –
Number of
threads, type of
thread
Thread
diameter (mm)
(Reference)
02 19
34 – 54 { 3.5 – 5.5}
44 { 4.5}
– 9/16-18UN 14.3
34 – 63 { 3.5 – 6.5} 14 – –
03
22 54 – 93 { 5.5 – 9.5} 74 { 7.5} – 11/16-16UN 17.5
24 59 – 98 { 6.0 – 10.0} 78 { 8.0} 18 – –
04 27 84 – 132 { 8.5 – 13.5} 103 {10.5} 22 13/16-16UN 20.6
05 32 128 – 186 {13.0 – 19.0} 157 {16.0} 24 1-14UNS 25.4
06 36 177 – 245 {18.0 – 25.0} 216 {22.0} 30 1-3/16-12UN 30.2
(10) 41 177 – 245 {18.0 – 25.0} 216 {22.0} 33 – –
(12) 46 197 – 294 {20.0 – 30.0} 245 {25.0} 36 – –
(14) 55 246 – 343 {25.0 – 35.0} 294 {30.0} 42 – –
Outer
diameter
of pipe
(mm)
Width
across
flats
(mm)
Tightening torque Nm {kgm} Face seal
Range Target
Nominal No. –
Number of threads,
type of thread
Thread diameter
(mm)
(Reference)
8 19 14 – 16 {1.4 – 1.6} 15 {1.5} 9/16-18UN 14.3
10 22 24 – 27 {2.4 – 2.7} 25.5 {2.6} 11/16-16UN 17.5
12 24 (27) 43 – 47 {4.4 – 4.8} 45 {4.6} 13/16-16UN 20.6
15 (16) 30 (32) 60 – 68 {6.1 – 6.8} 64 {6.5} 1-14UN 25.4
22 (20) 36 90 – 95 {9.2 – 9.7} 92.5 {9.4} 1-3/16-12UN 30.2
Thread size
Tightening torque
Bolts and nuts
mm Nm kgm
6 10 ± 2 1.02 ± 0.20
8 24 ± 4 2.45 ± 0.41
10 43 ± 6 4.38 ± 0.61
12 77 ± 12 7.85 ± 1.22
14 — —