Eaton Airflex VC 5000 Installation, Operation And Maintenance Manual

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4 6.4.6.14.6.24.6.34 7.4.7.14.7.24.7.3Friction Lining ReplacementCaution:Use only genuine Airflex replacementparts.Make sure the torque bars and release springshave been remove from the backing plates.For riveted friction shoe assemblies, drillthe rivets with a 15/64” (6mm) drill and tap therivet body out. Larger elements have liningsattached with flat head screws and locknuts.Air-flex special wrench p/n 304572 will aid inholding the locknuts during removal. SeeTable 7.TABLE 7FRICTION SHOE ASSEMBLY FASTENERSDRIVE PIN RIVETS11.5VC500 24VC650 42VC650 24VCl0001 4 V C 5 0 0 2 8 V C 6 5 0 1 4 V C l 0 0 0 2 8 V C 1 0 0 01 6 V C 6 0 0 3 3 V C 6 5 0 16VC1OOO2 O V C 6 0 0 3 7 V C 6 5 0 2 O V C 1 O O OFLAT HEAD SCREWS* (BRASS)AND LOCKNUTS3 2 V C l 0 0 0 4 2 V C 1 2 0 0 5 2 V C 1 2 0 0 6 O V C 1 6 0 03 8 V C 1 2 0 0 4 6 V C 1 2 0 0 5 1 V C 1 6 0 0 6 6 V C 1 6 0 0* Screws are 3/8-16NC-2 x 1.25 long flat head4.7.4 Carefully insert the air actuating tube into therim. Push the valves on the tube through thecorresponding holes in the rim and install thespiral snap rings (if applicable).4.7.5 Place a torque bar in each mating hole in theside plate, slide a friction shoe assembly ontoeach torque bar and carefully tap a releasespring (51VC1600,60VC1600 and 66VC1600elements have two release springs in eachcavity) into place. Make sure the spring ispositioned on the side of the torque baropposite the friction lining. Also, the springmust contact the torque bar at two points, notone. See Figure 15.TubeBacking-Releasek Spring4.7.64.7.7Attach the new lining tothe backing plate withnew screws and locknutsor drive pin rivets (SeeFigure 14), as applicable.Work from the center ofthe friction lining out tothe ends. The rivets areinstalled by driving the pinflush with the head. . 14Assembly of the ElementMake sure that all of the components havebeen cleaned and any damaged or worn com-ponents have been repaired or replaced.Assemble one of the side plates to the rimwith cap screws and lo&washers. It is notnecessary to install through bolts and locknutsat this time.Lay the rim/side plate assembly on a clean, flatwork surface, side plate down.VC 5000Revised: July, 1995 (PDF format)) / P l a t e4.7.84.7.94.7.104.7.11 Reinstall per 2.0.15\TorqueBarFig. 15Lay the remaining side plate in position so theair connections and torque bar holes areproperly aligned.Carefully guide the torque bars into the cor-responding holes in the side plate. It is oftenhelpful to install four equally spaced screwsand nuts through the rim and side plate tokeep some tension on the side platethroughout this step.Attach the side plate to the rim with capscrews and lockwashers, making sure all ofthe torque bars are seated in their side plateholes.Note the orientation of the air connectionsand install the through bolts and locknutswhere applicable.Reinstall the elbows (or quick release valves),using a good quality sealant on the pipethreads. Install the air connections on singlenarrow, dual narrow and single wide elements.Install only the short air connections (elementclosest to spider) on dual wide elements.0 Copyright Eaton Corp., 1989. All rights reserved.