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Rotary P.B. Union (Sizes 1/2" to 1")
Maintenance and Overhaul
• Remove the locking screw (4) which allows for the removal of locking ring (10). • Remove the spindle (9) complete with bearing kit (8), circlip (7) and carbon subassembly of seal kit (5). • Remove spacer (6), seal subassembly and gasket of seal kit (5) from the body (3). • If type R.S., unscrew end fitting (1-R.S.) from the body, remove and replace the C/T Bearing (2). • Hold spindle (9) in a vice, remove locking screws to enable carbon subassembly of seal kit (5) to be unscrewed, then remove gasket. • Remove circlip (7) and press off bearing kit (8) from spindle (9). • Discard and replace seal kit (5) and bearing kit (8). Handle seal kits with care to avoid damaging the precision lapped seal faces. • Thoroughly clean all parts before reassembly (which is virtually the reverse of the above steps). • After reassembly, follow the recommended installation procedures and allow for a suitable run-in period to ensure the seals are working correctly before refitting to the machine.
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