Fig. 28: Testing the motor for leakage
Table 17: Key to the symbols and codes
Symbol
Description
L
243
Always secure screwed connections marked with this symbol with
Loctite 243.
1.
Remove screw plug 903.31 and joint ring 411.31.
2.
Screw the testing device tightly into the G
½
plug thread.
3.
Carry out the leak test with the values specified above.
⇨
The pressure must not drop during the test period.
⇨
If the pressure does drop, check the seals and screwed connections.
4.
Repeat the leak test, if required.
5.
Remove the testing device.
DANGER
Screw plug leaking or missing
Damage to the motor!
▷
Never start up a pump set without screw plug 903.31.
▷
Apply a thread-locking agent (Loctite 243) to screw plug 903.31.
6.
Apply a thread-locking agent (Loctite, type 243) to screw plug 903.31.
7.
Fit screw plug 903.31 with new joint ring 411.31.
7.6 Tightening torques
Table 18: Tightening torques
Thread
Tightening torque
Property class:
A4-50
Property class:
A4-70
Property class:
8.8
[lbf ft]
[Nm]
[lbf ft]
[Nm]
[lbf ft]
[Nm]
M5
-
-
3.0
4
-
-
M6
-
-
5.2
7
-
-
M8
-
-
12.5
17
37
50
7 Servicing/Maintenance
52 of 68
Amacan P
