ABB HT842293, Operation Manual, Page: 128 / 150

Operation Manual / TPL76-C
Disassembly and assembly 8
Table of tightening torques 8.9 Page 126
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Table of tightening torques
8.9
1)
Place new Verbus Ripp® washers onto strain bolts (7). New Verbus
Ripp® washers must be fitted every time the unit is assembled.
2)
a) Tighten three nuts at 120° intervals to pre-tightening torque MV
(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.
3)
After putting a new Verbus Ripp® washer under each nut (8), tighten
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
8.9
Key to table