Table Of Tightening Torques - ABB HT568005 Operation Manual

8.9
8.9
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Disassembly and assembly

Table of tightening torques

Table of tightening torques
Figure 1
Place new Verbus Ripp® washers onto strain bolts (7). New Verbus
1)
Ripp® washers must be fitted every time the unit is assembled.
a) Tighten three nuts at 120° intervals to pre-tightening torque MV
2)
(lightly oil contact surface of nut).
b) Tighten the remaining nuts with pre-tightening torque MV.
c) Tighten all nuts (in a star pattern) with tightening angle DW.
After putting a new Verbus Ripp® washer under each nut (8), tighten
3)
with pre-tightening torque of MV 80 Nm, then mark the 0° point and
tighten (under tightening angle control) to a DW of 90°.
VR Verbus Ripp® Washer
MV Pre-tightening torque
DW Tightening angle
Operation Manual / TPL76-C
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8.9 Page 126