ABB Turbocharger TPL-A Series, Руководство по сборке

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Assembly Instructions / TPL65-A ... TPL77-A, TPL65VA
4 Installing the turbocharger / 4.1 Steps for fastening the turbochar-
ger
© Copyright 2020 ABB. All rights reserved. HZTL455311P0017_EN Rev.A July 2020
Product Thread
size
Height a of tensioned
turbocharger foot
[mm]
Pre-tightening
torque
[Nm]
Tightening
angle for ten-
sioned height a
[DEG]
Additional
tightening
angle
1)
for
every 10 mm of
additional
screw length b
[DEG]
TPL65-A M20 64 90 33 4.4
TPL65VA M20 64 90 33 4.4
TPL69-A M24 75.5 160 32 3.7
TPL73-A M24 88 160 35 3.5
TPL77-A M30 104 300 37 3.1
Table 7
1)
Some brackets have through-holes for attaching the turbocharger or the threads start just
a few millimetres below the contact surface. This additional tightening angle must be taken
into consideration (after meaningful rounding) so that the screw always has the same high
pre-tensioning force.
Due to the special foot design of this turbocharger, the foot is not in contact with the
bracket in the area of the screw holes as long as the screws have not been tightened. Ini-
tially, the foot only touches the bracket at the centre of the foot.
1. In Z configuration, hand-tighten without tools.
2. In Z configuration, tighten to 50% of pre-tightening torque.
3. In Z configuration, tighten to 100% of pre-tightening torque.
Fig. 1: Contact surface, turbocharger attachment
4. Use the feeler gauge (0.05 mm) to check whether 25% of the surface of the screw con-
tact points is in contact with the bracket (see diagram).
CAUTION
Insufficient pre-tensioning force
If the surface (A) of the contact points has insufficient contact before apply-
ing the tightening angle, the pre-tensioning force will be too small and the
screws will become loose and break.
u
Tighten the screw until 25% of the surface (A) is in contact with the
bracket.
5. Tighten the screws with the specified tightening angle in a Z configuration.
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