Komatsu PC88MR-10 Shop Manual page 53

Thread
diameter
Nominal No.
(mm)
10, 12
33
14 42
Table of tightening torque for O-ring boss plugs
a Unless otherwise specified, tighten the plug for O-ring boss to the torque shown in the table below.
Thread
diameter
Nominal No.
(mm)
08 8
10 10
12 12
14 14
16 16
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)
a Unless otherwise specified, tighten the hose fittings (taper seal type and face seal type) to the torque
shown in the table below.
a The table is applied to the threads coated with engine oil (wet threads)
PC88MR-10
Width
across flats
(mm)
363 to 480 {37.0 to 49.0}
746 to 1,010 {76.0 to 103}
Width
across flats
(mm)
5.88 to 8.82 {0.6 to 0.9}
14
9.8 to 12.74 {1.0 to 1.3}
17
14.7 to 19.6 {1.5 to 2.0}
19
19.6 to 24.5 {2.0 to 2.5}
22
24.5 to 34.3 {2.5 to 3.5}
24
34.3 to 44.1 {3.5 to 4.5}
27
44.1 to 53.9 {4.5 to 5.5}
30
58.8 to 78.4 {6.0 to 8.0}
32
93.1 to 122.5 {9.5 to 12.5}
32
107.8 to 147.0 {11.0 to 15.0}
127.4 to 176.4 {13.0 to 18.0}
36
181.3 to 240.1 {18.5 to 24.5}
274.4 to 367.5 {28.0 to 37.5}
Foreword, safety and general information
Tightening torque (Nm {kgm})
Range
Tightening torque (Nm {kgm})
Range
00 Index and foreword
Target
422 {43.0}
883 {90.0}
Target
7.35 {0.75}
11.27 {1.15}
17.64 {1.8}
22.54 {2.3}
29.4 {3.0}
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}
00-51