Hitachi ZX70-3, Руководство по ремонту

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GENERAL / Tightening
W1-2-7
Screw-In Connection
Depending on types of screw and sealing, different
types of screw fittings are used.
IMPORTANT: Be sure to confirm that the thread
pitch and thread type (tapered or
straight) are the correct type before
using any screw-in connection.
Seal Tape Application
Seal tape is used to seal clearances between male
and female threads, so as to prevent any leaks be-
tween threads.
Be sure to apply just enough seal tape to fill up thread
clearances. Do not overwrap.
Application Procedure
Confirm that the thread surface is clean and, free of
dirt or damage.
Apply seal tape around threads as shown. Wrap seal
tape in the same direction as the threads.
Low-Pressure-Hose Clamp Tightening Torque
Low-pressure-hose clamp tightening torque differs
depending on the type of clamp.
T-Bolt Type Band Clamp:
4.4 N m (0.45 kgf m, 3.25 lbf ft )
Worm Gear Type Band Clamp:
5.9 to 6.9 N m (0.6 to 0.7 kg m, 4.3 to 5.1 lbf ft)
W105-01-01-018
Male Tapered Thread
Wrench Size
mm
Tightening Torque
N m (kgf m, lbf ft)
Hose Fittings FC material SS material
19 14.5 (1.5, 10.5) 34 (3.5, 25)
22 29.5 (3.0, 21.5) 49 (5.0, 36)
27 49 (5.0, 36) 93 (9.5, 69)
36 69 (7.0, 51) 157 (16, 116)
41 108 (11, 80) 205 (21, 151)
50 157 (16, 116) 320 (33, 235)
60 195 (20, 144)
W105-01-01-019
M114-07-041
M114-07-043 M114-07-042
PF
30
PT
Male Straight Thread Male Tapered Thread
Clearance
External Thread
Internal Thread
Leave one to two pitch threads uncovered
T-Bolt Type Worm Gear Type