--
226B
系列柴油机维修保养手册
Maintenance Manual for
226B
series Diesel Engine
R
5. 柴油机强力螺栓的拧紧力矩和拧紧方法
Tightening Torque And Tightening Method Of High Strength Bolts
1. 主轴承螺栓：
Main-Bearing Bolt
8 根 M14（4 缸机为 10 根，6 缸机为 14 根）、22mm 套筒扳手
8 pieces M14 (10 pcs for 4-cylinder engine and 14 pcs for 6-cylinder engine), sleeve wrench
22mm.
6 缸机分两次拧紧（拧紧顺序按上图所示）
For a 6-cylinder engine, tightening is done in two times (in sequence as shown in the above figure).
第一次：70N·m
Firstly, in 70 N·m;
第二次再将螺栓旋扭 90
。
±4
。
；3、4 缸机参照上图按由中间均匀两端延伸的顺序分 2 次拧紧。
Secondly, the bolt is turned 90
。
±4
。
. For 3-cylinder and/or 4-cylinder engines, in reference to the
same figure, the bolt is screwed down in two steps, namely even in the middle and extended at two ends.
