Multitech 1777.8/7-10 G3 Dismantling the bearings, Axial suction nozzle, Radial suction nozzle

Page 16

Multitec

7.3.3Dismantling the bearings

The sections below describe partial dismantling (bearings, seals, etc.) and complete dismantling of the pump unit.

7.3.3.1Dismantling the non-drive-end bearings Plain bearing

The plain bearing is removed without dismantling the hydraulic section of the pump.

Axial suction nozzle:

Fig. 17

-Pull off bearing cover 160.2 using forcing screw.

-Remove circlip 932.1 (shaft in C45) or bolt 901.2 and disc

550.7(shaft in 1.4021 / 1.4462).

-Take out bearing sleeve 529.

-Pull out bearing cartridge 381 with its two O-rings 412.2. N.B.: Anti-rotation pin 561.1 remains in position.

Radial suction nozzle:

Fig. 18

-Undo bolts 901.3 and remove cover 160.1 with O-ring 412.3 and bearing cartridge 381 with O-rings 412.2.

-Remove circlip 932.1 (shaft in C45) or bolt 901.2 and disc 550.7 (shaft in 1.4021 / 1.4462).

-Pull out bearing sleeve 529.

-Remove disc 550.6.

N.B.: Anti-rotation pin 561.1 remains in position.

16

Shaft in 1.4021 / 1.4462

Fig. 19

Rolling element bearings:

If the pump is oil-lubricated, drain the oil before dismantling.

-Unscrew bolts 901.4 or 914.5 and remove non-drive-end bearing cover 361.1 or 361.2.

-Unscrew nut 920.7 with lockwasher 931 or the nut with castellated nut 920.6.

-Pull out sleeve 520.2 with rolling element bearing 320.2.

Grease lubrication with lip seal

 

Multitec 32 - 125

Multitec 150

Fig. 20

Fig. 21

Oil lubrication with lip seal

 

Multitec 32 - 125

Multitec 150

Fig. 22

Fig. 23

Oil lubrication with labyrinth seal

 

Multitec 32 - 125

Multitec 150

Fig. 24

Fig. 25

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Contents Operating instructions 1777.8/7-10 G3 High-pressure pumps in ring-section designWorks No Type series Multitec Contents Section Adjusting dimensions for coupling Multitec IndexSafety Multitec GeneralMultitec Transport, storageAccessories Description ProductMultitec Installation at site Foundation / Checks to be carried out prior to installationInstalling the pump/unit Close-coupled pumpsAligning the pump / drive Coupling guard Be tightened to the following torques Tightening torqueThread Strength Drive Non-drive End 100 120 NmConnecting the piping Max. permissible pipeline forces material codes 10, 11, 12Max. permissible pipeline forces material codes 20 to Protection against foreign matterConnection to power supply Setting the time relayVacuum balance line Checking the direction of rotationMultitec Commissioning, start-up / Shutdown Temperature of the fluid pumped Start-upShutdown Gland packingSwitching frequency Returning to service after storageMinimum flows Density of fluid pumpedMultitec Servicing / maintenance Bearings and lubricationGeneral instructions PumpOil quality / Oil change MotorShaft seal Mechanical seal CouplingDismantling the bearings Dismantling the non-drive-end bearings Plain bearingAxial suction nozzle Radial suction nozzleGrease lubrication figs Oil lubrication with lip seal figOil lubrication with labyrinth seal fig Grease lubricationReplacing the shaft protecting sleeve Removing a double-acting mechanical seal Reassembly Dismantling the hydraulic systemIntermediate bearing bush Intermediate bearing diffuser With the rules of sound engineering practiceStuffing box housing Reassembly of hydraulic systemSeals Gland packing Mechanical seals Horizontal baseplate-mounted pump unitsSealing elements Leakage at the mechanical sealTightening the shaft nuts on Multitec pumps MTC 100/125/150 Fixed bearingRolling element bearing sizes Grease-lubricated bearings Temperature of the rolling element bearings Re-adjusting the clearance gaps Maximum clearance gapsInstallation and returning to service Radial bearingMultitec Trouble-shooting General assembly drawing Pump sizes 32 toClose-coupled pump up to pump size Radial suction nozzleVertical design Pump sizes 32, 50 Pump sizes 100, 125Pump sizes 125 List of components Description525.1/2/4 Spacer sleeve 529Achtung Attenzion BildKSB Aktiengesellschaft

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