
Operation Manual / Power2 850-M / Low-pressure stage
9 Disassembly and assembly / 9.13 Installing the compressor casing
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HZTL4062_EN
Rev.E
March 2022
9.13
Installing the compressor casing
Fig. 45: Installing the compressor casing
Part number
Thread and tightening torque
61037
M16
250 Nm
61037 (nuts that are difficult to access)
Pre-tightening torque 60 Nm
Tightening angle 90° ±5°
190 Nm
1)
72021
M10x20
70 Nm
Table 48: Tightening torque (61037 / 72021)
1) Application with adapter 90249 and special key 90250/90251, see below
1. Secure lifting gear to swivel lifting eye (90231) and insert compressor casing.
(For installation of bracket and plates, see
Removing the compressor casing
).
2. Fit nuts (61037). Observe tightening torque.
3. Remove plates (90031) and bracket (90030).
4. Fit screw (72021). Observe tightening torque.
Application of special key for nuts that are difficult to access
u
Attach the special key (90250 / 91250 / 90251 / 91251) to the torque spanner by using the
adapter (90249 / 91249).
u
Use the special key in an angle range between 30° and 90°.
u
Use the special key only for nuts that are difficult to access and observe the reduced
torque.
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