Operation Manual

Section:
Page:
Engine:
Specification Data
© 1187
3.5
3-3-05
S/BVM 628
© 51 203 0
3.5.3 Tightening Procedure
Proceed by applying lube oil or other com-
pound to threads according to information
given in the job cards.
Phase 1: Screw the bolts (screws, nuts) in
place
Phase 2: Preload the bolts (screws, nuts)
● Torques up to 30 Nm
Hold socket wrench with tommy bar, hands
being closed together and preload bolts
evenly (alternately and crosswise, where
applicable).
When using a plain or box wrench, the
thumb should touch the wrench.
● Torques above 30 Nm
Preload bolts by torque wrench to the
torque tabulated (crosswise and in stages,
where applicable).
If a standard tool must be used, see ad-
joining figure and table below with typical
values
Phase 3
● Tighten the bolts (srews, nuts)
Tighten bolts evenly to the tabulated angle
(alternately and crosswise, where applica-
ble). Use extension, if necessary. Where
several bolts are involved and the angle is
greater than 60°, tighten in stages of max.
60°.
Preloading Lever Force
torque Length
Nm mm N
30 500 60
40 500 80
70 1000 70
130 1000 130
lever length
Force