Waukesha 200 series Operation, Maintenance And Parts Manual
Also see for 200 series: Operation and maintenance manual
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Contents
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4395-03009PRE-ASSEMBLED SEALSPre-assembled (Cartridge) Seals have all of theseal components mounted to a flange. They arepre adjusted at factory. Follow the SealManufacturers's (John Crane, A. W. Chesterton,etc.) recommendations regarding application,operation and maintenance.The following procedures apply to this type ofseal:DISASSEMBLY1. Remove all flush connections and fittings.Remove the casing clamp, casing and O-ringfrom the housing flange. (Figure 11)2. Remove the impeller retainer bolt and O-ring; then loosen the seal setscrews-and pull theimpeller, backplate and seal off the bearingshaft as a unit. Set the assembly face down (onthe impeller). (Figure 11-12)Note: The clearance shims that position theimpeller within the casing are at the end of theimpeller hub (inside the seal.) Keep shimstogether as a set for reassembly. (Figure 12)3. Remove the seal unit from the backplateassembly by removing the cap screws holdingthe seal flange to the seal adapter. Pull sealfrom seal adapter. Remove seal adapter byremoving socket head cap screws holdingadapter to the back plate. (Figure 12)PUMP ASSEMBLY1. Place shims, backplate and impeller onthe shaft assembly. Hand tighten the impellerretainer bolt on the shaft.2. Check the space between the back of theimpeller and the backplate with a feeler gage(.030 nominal) while holding the backplate tightagainst the bearing housing flange. (Any axialmovement of the shaft should not be added tothe .030 nominal clearance.) If needed, changethis clearance by adding or removing shims.(Figure12-13) Confirm operating clearances byclamping the casing to the bearing housingflange and rotating the shaft/impeller manuallyto be sure the impeller does not touch the casingor backplate. When proper shim pack isconfirmed remove the casing, impeller andbackplate leaving the shim pack on the shaft.3. Insert L-gasket into the backplate. Insertcartridge adapter into the backplate and tightenwith four socket head cap screws. (Figure 14)IMPELLER BOLTASSEMBLYO-RING.030'Figure 13Figure 12Figure 11Figure 14 BACKPLATESHIMSCARTRIDGESEALSOCKETHEADCAPSCREWIMPELLERCAP SCREWADAPTERCLAMP CASINGADAPTER SOCKET HEADCAP SCREWL-GASKETCARTRIDGE SEALS REMOVAL / ASSEMBLYSET SCREWSBACKPLATE |
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