Badger Meter Oscillating Piston Meter - Manual (Page 12)

2 Inspection
a Carefully examine the piston for warpage, cracks or other signs of wear and deterioration Replace piston,
if necessary
b Check the magnet assembly and magnet assembly bushing (located on center pin inside chamber) for excessive
wear and corrosion Replace, if necessary
c Check the control roller and control roller bushing Replace, if necessary
d Inspect the housing cover O-ring for wear and deterioration Replace, if necessary
3 Reassembly
a Place the magnet assembly on the bushing on the center pin inside the measuring chamber Make sure the magnet
assembly rotates freely
NOTE: N Magnet bushing must be snug on the housing pin Replace the bushing, if necessary
b Align the teardrop slot in the piston with the partition plate of the measuring chamber Insert the piston into the
chamber Make sure the piston moves freely
c Install the control roller over the bushing on the center pin in the housing cover The control roller is easily
positioned over the center pin when meter is in vertical position Make sure control roller rotates freely
d Align the holes in the cover with the mounting holes in the housing Secure the cover in place with housing bolts
and wing nuts (on 1/2" meter the cover is secured with a hinged, ring-clamp)
Drive Systems
Instructions for removing, inspecting and reassembling the accessory drive systems follow
Magnetic Drive Adapter Assembly
1 Removal
a To remove the accessory from the castellated fitting on the adapter assembly, loosen the accessory seal screw and
rotate the accessory 1/4 turn
b Remove the three screws and washers securing the adapter assembly to the rear of the meter housing and carefully
lift the adapter from the meter
3 Inspection
a Check that the drive assembly operates freely when the follower magnet and spindle assembly at the front of the
adapter is rotated
b Check magnets, thrust bearing, ball races, and race retainer for signs of wear or corrosion Clean and/or replace
parts as necessary If necessary, apply light coat of Lubriplate #905, Gredag #53A, or equivalent to thrust bearing
3 Reassembly
a Secure the adapter assembly to the rear of the meter housing with the screws and washers removed in step 16
b Install the accessory onto the adapter assembly and secure it in place with the seal screw
Industrial Meter, Oscillating Piston, Sizes 1/2" through 2" Model OP
Page 12 August 2013