IHI NIIGATA MG(L)26HLX, Инструкция по эксплуатации

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S E C T I O N
３
- M A I N T E N A N C E
3.3 TABLE TORQUE OF VALUES
３－３－０１
3.3 TABLE OF TORQUE VALUES
CAUTION
There is a danger of your hands and legs being pinched by weighty parts or
disassembling tool during overhaul inspection of the engine.
Take precautions in handling such parts and tools.
There is a danger of injury to your hands during the work inside the engine room
and enclosure.
Be sure to put on gloves for the protection of your hands except for the case of
special work.
3.3.1 General
Tighten the main parts according to the tightening table for main parts
positively. (refer to section 3.3.3)
Full care must be taken at the time of tightening, paying full consideration to the following.
(1) Clean the threads and seat surface of bolts and nuts fully and confirm that
they are not damaged. For it, screw them with hand up to the seat.
(2) Coat the lubricant described in section 3.3.3 on the threads and seat
surface, and tighten the main parts.
(3) In order to tighten uniformly, formal tightening must not be suddenly but

through the following 3 steps.
Pre-tightening
→
Intermediate tightening
→
Formal tightening
3.3.2 Tightening method
(1) Tightening operated by manual
Nut or bolt is rotated by force (F) that affect the length of lever (L) as
follows. F
×
L is shown tightening torque, indicated by N
･
m.
Torque = F
×
L N
･
m
F : force of arm L : length of lever(m)
(245
～
294 N)
There are two method to control of the torque.
- Control by torque wrench
- Angle of rotation after pre-tightening