Hitachi 4HK1 Workshop Manual page 20

Gb3 exhaust emission standards
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14A-14 Service Information Guide (All)
Strength
category
Bolt head
shape
M18 - M24
: 151.0 to 225.6 N・m
M18 x 1.5
{ 15.4 to 23.0 kgf・m /
111 to 166 lb・ft }
: 151.0 to 225.6 N・m
*M18 x 2.5
{ 15.4 to 23.0 kgf・m /
111 to 166 lb・ft }
: 206.0 to 310.0 N・m
M20 x 1.5
{ 21.0 to 31.6 kgf・m /
152 to 229 lb・ft }
: 190.2 to 286.4 N・m
*M20 x 2.5
{ 19.4 to 29.2 kgf・m /
140 to 211 lb・ft }
: 251.1 to 413.8 N・m
M22 x 1.5
{ 25.6 to 42.2 kgf・m /
185 to 305 lb・ft }
: 217.7 to 327.5 N・m
*M22 x 2.5
{ 22.2 to 33.4 kgf・m /
161 to 242 lb・ft }
: 358.9 to 539.4 N・m
M24 x 2
{ 36.6 to 55.0 kgf・m /
265 to 398 lb・ft }
: 338.3 to 507.0 N・m
*M24 x 3
{ 34.5 to 51.7 kgf・m /
250 to 374 lb・ft }
4.8
4T
Hex bolt
Flange bolt
: 195.2 to 293.2 N・m
{ 19.9 to 29.9 kgf・m /
144 to 216 lb・ft }
: 196.1 to 294.2 N・m
{ 20.0 to 30.0 kgf・m /
145 to 217 lb・ft }
: 269.7 to 405.0 N・m
{ 27.5 to 41.3 kgf・m /
199 to 299 lb・ft }
: 249.1 to 374.6 N・m
{ 25.4 to 38.2 kgf・m /
184 to 276 lb・ft }
: 362.8 to 544.3 N・m
{ 37.0 to 55.5 kgf・m /
268 to 401 lb・ft }
: 338.3 to 507.0 N・m
{ 34.5 to 51.7 kgf・m /
250 to 374 lb・ft }
: 430.5 to 711.0 N・m
{ 43.9 to 72.5 kgf・m /
318 to 524 lb・ft }
: 406.0 to 608.0 N・m
{ 41.4 to 62.0 kgf・m /
299 to 448 lb・ft }
7T
Hex bolt
Flange bolt

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