Assembly Instructions - KSB MEGAFLOW 50-160 Operating Instructions Manual

KSB Megaflow
Carefully, remove the shaft (210) from the casing pump side to drive end side. The shaft with the bearing (321) and the inner
ring of the other bearing (322) will be released from the bearing bracket (330). Then, remove the parts located in the sealing
chamber as packing rings (461), lantern ring (458), neck bush (456).
After this procedure, all parts will be available to analysis and maintenance.
15.5.2 Pump with packing: Bearing Brackets P65/160X and P60/200S
Close suction and discharge valves (if existing). Drain the pump by removing the threaded plug (903.1). Disconnect and
remove any auxiliary connections. (if existing). Remove the venting (672). Remove the threaded plug (903.5) and drain the
oil from the bearing bracket. Remove the constant level oiler (638) from it.
In case of spacer coupling type, take the spacer out.
In case there is no spacer, remove the coupling sleeve by moving the drive backwards. Take the coupling sleeve from the
shaft pump, loosening before, the Allen bolt. Loosen the pump foot fasteners that fix it to the baseplate.
Loosen the nuts (920.1).
Fast the extractor bolts and all set will be pulled out of the casing.
Put back the extractor bolts (901.1) to their original positions so they can not upset the assembly later.
Wedge with wood, the set in the balancing region.
Lock the shaft by means of using a device put in the region of the coupling sleeve key (940.2)
Loosen and remove the impeller nut (922) and the gasket (400.3).
Loosen the nuts (920.2) and remove the gland cover (452).
Extract the pressure cover (163) and the flat gasket (400). Extract the shaft protecting sleeve (524). Remove the thrower
(507) and the key (940.2). Loosen the bolt (901.1) and set free the pump foot (183). Loosen the bolts (901.2) and (920.6).
Extract the bearing covers (360) and flat gaskets (400.2). Take care not to damage the radial seal ring (421), liberated
together with the bearing covers. Remove the shaft (210) from the pump side to the motor side, making the bearing (320) to
slip out of the bearing bracket (330). Extract the parts located in the sealing chamber, as packing rings (461), lantern ring
(458), neck ring (457), neck bush (456). After this procedure, all parts will be available for analysis and maintenance.
Bearing Bracket P65/160X
Since it has bearing casing (382), loosen the bolts (901.6) and remove the shaft (210) from the pump side to the motor side,
making the bearing casing (382) to slip out of the bearing bracket (330). Extract the circlip (932.2) and the washer (551) from
the bearing casing. Rely the bearing casing on a piping of the same diameter and with a piece of lead strike against the shaft
(210) in order to extract the bearing casing (382).
15.5.3 Pumps Disassembly Sequence with Mechanical Seal
Loosen the auxiliary pipings (if any) and the gasket. Follow the other instructions of the Instructions Manual of the
Mechanical Seal, which will follow with the pump in case of seal supply.
15.7

Assembly Instructions

All the parts must be cleaned and deburred before Assembly.
15.7.1 Bearing Brackets CS40 and CS50
The individual parts have been placed in a clean and level assembly area. All dismantled parts have been cleaned and
checked for wear. Any damaged or worn parts have been replaced by original spare parts. The sealing surfaces have been
cleaned.
Warning: Hot surfaces due to heating of components for assembly/dismantling
Risk of burns!
▷ Wear heat-resistant protective gloves.
▷ Remove flammable substances from the danger zone.
Heat up deep groove ball bearing (321.01/.02) in an oil bath to approx. 80°C and slide it onto shaft (210) until it will not go
any further.Carefully slide pre-assembled shaft (210) with deep groove ball bearing (321.01/.02) into bearing bracket (330).
Fit pump-end bearing cover (360.01) with joint ring (400.01); take care not to damage lip seal 421.(02). Fit drive-end bearing
cover (360.02) with joint ring (400.02); take care not to damage lip seal (421.02). Fit throwers (507.01) and (507.02), if any,
and align flush with the shaft shoulder. Fit keys (940.02). Pull the coupling hub onto the shaft end. Secure the coupling hub
with a set screw.
15.7.2 Bearing Brackets A30K, A40K, A50K and A60K
Before the assembly in the shaft, the bearing is heated in the furnace or in an oil bath up to a maximum temperature of 80 to
90ºC above the shaft temperature, observing the maximum limit of 125ºC.
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