Komatsu A90301, Shop Manual

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FOREWORD STANDARD TIGHTENING TORQUE
00-16 PC200LC-8
12
Table Of Tightening Torques For O-ring Boss Piping Joints
00
★
Unless there are special instructions, tighten the O-ring boss piping joints to the torque below.
Table Of Tightening Torques For O-ring Boss Plugs
00
★
Unless there are special instructions, tighten the O-ring boss plugs to the torque below.
Tightening Torque Table For Hoses (Taper Seal Type And Face Seal Type)
00
★
Tighten the hoses (taper seal type and face seal type) to the following torque, unless otherwise specified.
★
Apply the following torque when the threads are coated (wet) with engine oil.
Norminal No.
Thread diameter Width across flat Tightening torque N•m {lbf ft}
mm mm Range Target
02 14
Varies depending on
type of connector.
35 - 63 {25.81 - 46.46} 44 {32.45}
03, 04 20 84 - 132 {61.95 - 97.35} 103 {75.96}
05, 06 24 128 - 186 {94.40 - 137.18} 157 {115.79}
10, 12 33 363 - 480 {267.73 - 354.02} 422 {311.25}
14 42 746 - 1010 {550.22 - 744.93} 883 {651.26}
Norminal No.
Thread diameter Width across flat Tightening torque N•m {lbf lb}
mm mm Range Target
08 08 14 5.88 - 8.82 {4.33 - 6.50} 7.35 {5.42}
10 10 17 9.8 - 12.74 {7.22 - 9.39} 11.27 {8.31}
12 12 19 14.7 - 19.6 {10.84 - 14.45} 17.64 {13.01}
14 14 22 19.6 - 24.5 {14.45 - 18.07} 22.54 {16.62}
16 16 24 24.5 - 34.3 {18.07 - 25.29} 29.4 {21.68}
18 18 27 34.3 - 44.1 {25.29 - 32.52} 39.2 {28.91}
20 20 30 44.1 - 53.9 {32.52 - 39.75} 49.0 {36.14}
24 24 32 58.8 - 78.4 {43.36 - 57.82} 68.6 {50.59}
30 30 32 93.1 - 122.5 {68.66 - 90.35} 107.8 {79.50}
33 33 _ 107.8 - 147.0 {79.50 - 108.42} 124.4 {91.75}
36 36 36 127.4 - 176.4 {93.96 - 130.10} 151.9 {112.03}
42 42 _ 181.3 - 240.1 {133.72 - 177.08} 210.7 {155.40}
52 52 _ 274.4 - 367.5 {202.38 - 271.05} 323.4 {238.52}
Nominal
size of hose
Width
across flats
Tightening torque N•m {lbf ft}
Taper seal
type
Face seal type
Range Target
Thread size
(mm)
Nominal thread
size - Threads per
inch, Thread series
Root diameter (mm)
(Reference)
02 19
34 - 54 {25.0 - 39.8} 44 {32.4} - 9/16 - 18 UN 14.3
34 - 63 {25.0 - 46.4} 44 {32.4} 14 - -
03
22 54 - 93 {39.8 - 68.5} 74 {54.5} - 11/16 -16 UN 17.5
24 59 - 98 {43.5 - 72.2} 78 57.5} 18 - -
04 27 84 - 132 {61.9 - 97.3} 103 {75.9} 22 13/16 - 16 UN 20.6
05 32 128 - 186 {94.4 - 137.1} 157 {115.7} 24 1 - 14 UNS 25.4
06 36 177 - 245 {130.5 - 180.7} 216 {159.3} 30 1 3/16 - 12 UN 30.2
(10) 41 177 - 245 {130.5 - 180.7} 216 {159.3} 33 - -
(12) 46 197 - 294 {145.3 - 216.8} 245 {180.7} 36 - -
(14) 55 246 - 343 {181.4 - 252.9} 294 {216.8} 42 - -