Komatsu D375A-8 - Page 321

Tighten the hoses by the following torque shown in the table.
T
aper seal
Nominal
No. of
hose
Thread
size “a”
(mm)
Width
across
flats “b”
(mm)
Tightening torque
Target value Allowable range
Nm kgm Nm kgm
02 14 19 44 4.5 34 to 63 3.5 to 6.5
03 18 22 78 8.0 59 to 98 6.0 to 10.0
04 22 27 103 10.5 84 to 132 8.5 to 13.5
05 24 32 157 16.0 128 to 186 13.0 to 19.0
06 30 36 216 22.0 177 to 245 18.0 to 25.0
10 33 41 216 22.0 177 to 245 18.0 to 25.0
Face seal
Nominal
No. of
hose
Nominal size
- thereads
per inch“a”
Width
across
flats “b”
(mm)
Tightening torque
Target value Allowable range
Nm kgm Nm kgm
02
9
/
16
-18UN
19 44 4.5 34 to 54 3.5 to 5.5
03
11
/
16
-16UN
22 74 7.5 54 to 93 5.5 to 9.5
04
13
/
16
-16UN
27 103 10.5 84 to 132 8.5 to 13.5
05 1 -14UNS 32 157 16.0 128 to 186 13.0 to 19.0
06
1
3
/
16
-12UN
36 216 22.0 177 to 245 18.0 to 25.0
10
1
7
/
16
-12UN
41 216 22.0 177 to 245 18.0 to 25.0
MAINTENANCE STANDARD TIGHTENING TORQUE FOR BOLTS AND NUTS
4-11