5 Installation/Dismantling
25 of 44
4STQ
2580.821/04-EN
5.3.7 Installing the double cartridge seal C190/190M1-4STQ
CAUTION
Use of grease or other permanent lubricants
Torque transmission impeded/ overheating of and damage to the pump!
▷ Never use grease or other permanent lubricants for fitting the torque-
transmitting elements of a mechanical seal.
▷ Use soft soap to reduce any friction caused during assembly.
▷ Never coat the mechanical seal faces with grease or oil.
ü The relevant documentation for installing the mechanical seal is observed.
(ðSection9.1.8,Page41)
ü The back pull-out unit has been removed from the pump casing and safely
positioned and secured in a horizontal position.
ü The original 4STQ cartridge seal is fully assembled and undamaged.
1. Apply a suitable lubricant to the O-rings. Ensure that no permanent lubricant
comes into contact with the O-rings, in order to guarantee reliable torque
transmission.
2. Verify that O-rings 412.56 and 412.59 are correctly seated in their respective
housing parts.
Fig.13: Illustration of the assembly fixture
3. Completely remove and store the hexagon socket head cap screws 914.54 (8
nos.) and assembly fixtures 96-3 (3 nos.) serving as a transport lock.
4. Slide the entire seal assembly onto the pump shaft.
5. Apply a suitable lubricant to shaft210 in the area of the mechanical seal and
the impeller hub.
6. Align the groove in shaft sleeve 523 with the groove in shaft210.
7. Carefully slide the entire cartridge mechanical seal 4STQ onto the shaft until seal
cover 471 abuts discharge cover 163. Apply the axial force required for insertion
into the discharge cover via the seal cover only. Ensure that primary ring472.52
and mating ring475.52 are not damaged. Hexagon socket head cap screws
914.52 can be used to press the stationary seal cover into the discharge cover of
the pump.
8. Fit O-ring 412.06 on the shoulder of shaft sleeve 523.
To Next Page
Loading...
Need help?
General