7 Servicing/Maintenance
60 of 72
HPK
Table 26:
Tightening torques for screwed connections
Material
stud/
hexagon
nut
1.7709+QT / 1.7258+QT
Monix3k / Monix3k
A4-70 / A4-70
Stamp on
stud/
hexagon
nut
11)
GA / G
MM / MM (M3k)
A4-70 / A4-70
Tightening torques [Nm]
Brand-new
threads
12)
-15 %
13)
-20 %
13)
Brand-new
threads
12)
-15 %
13)
-20 %
13)
Brand-new
threads
12)
-15 %
13)
-20 %
13)
M 16
190
162
152
320
272
256
155
132
124
M 20
330
281
264
620
527
496
200
170
160
M 24
570
485
456
900
765
720
270
230
215
M 30
1000
850
800
1200
1020
960
550
468
440
7.6.2 Tightening torques impeller nut/screw
Bearing bracket P08s
Tighten the impeller nut to the following torques:
Bearing bracket
Tightening torque [Nm]
Wrench size [mm]
P08as
1000
60
Re-tighten the impeller nut some 20 to 30 minutes after assembly.
Bearing brackets P10as and
P12s
Tighten hexagon head bolt 901.87 to the following torques:
Bearing bracket
Tightening torque (Nm)
Hexagon head bolt 901.87
P10as
350
M 24
P12s
350
M 24
7.7 Spare parts stock
7.7.1 Ordering spare parts
Always quote the following data when ordering replacement or spare parts:
▪
Order number
▪
Order item number
▪
Type series
▪
Size
▪
Material variant
▪
Year of construction
Refer to the name plate for all data.
Also specify the following data:
▪
Part number and description
▪
Quantity of spare parts
▪
Shipping address
▪
Mode of dispatch (freight, mail, express freight, air freight)