ABB A255-L Assembly Instructions Manual page 15

Assembly Instructions / A200-L
4 Installing the turbocharger / 4.2 Steps for fastening the turbochar-
ger
Torque-controlled tightening
Product
A255-L
A260-L
A265-L
A270-L
A275-L
A280-L
Table 6: Tightening torques (foot screws)
Angle-controlled tightening
Product Thread size
A255-L M27
A260-L M27
A265-L M22
A270-L M27
A275-L M30
A280-L M33
Table 7: Tightening angle (foot screws)
Pinning of turbocharger feet with positioning pins
If the turbocharger is pinned at its feet, one pin hole per foot must be used.
© Copyright 2020 ABB. All rights reserved.
Thread size Height a of foot
M27
M27
M22
M27
M30
M33
Height a Pre-tightening
foot torque
[mm] [Nm]
60 220
60 220
86 120
100 220
120 300
136 400
HZTL455311P0001_EN
Tightening torque
[mm]
60
60
86
100
120
136
Tightening
angle tightening angle for
height a
[DEG]
30
30
30
30
30
35
Rev.A
[Nm]
830
830
440
830
1100
1500
Additional
every 10 mm of ad-
ditional screw
length b
[DEG]
3.1
3.1
3.7
3.1
2.6
2.6
July 2020