FLANGE SIDE HD30B

For technicians working on Multiple brands equipment, Flange Side HD30B is identified by part number 02-3973-31 for replacement. Model reference(s) in the listing name include HD30B. Match the part number 02-3973-31 to the old component before ordering, then reinstall with careful alignment and routing. Once the root cause is corrected, performance should stabilize and output should return to normal. This replacement component supports normal operation by restoring fit, sealing, alignment, or control behavior. Technicians typically replace this part when they’re seeing inconsistent operation, visible wear, cracking, corrosion, or a component that won’t stay seated. After replacement, run at least one full cycle and recheck for leaks, vibration noise, and fasteners that loosen during operation. Take a photo before disassembly so you can confirm orientation and fastener locations during reassembly. Clean the area around the repair so debris doesn’t interfere with fitment or sealing surfaces. Clean the area around the repair so debris doesn’t interfere with fitment or sealing surfaces. Take a photo before disassembly so you can confirm orientation and fastener locations during reassembly. Clean the area around the repair so debris doesn’t interfere with fitment or sealing surfaces. Take a photo before disassembly so you can confirm orientation and fastener locations during reassembly. Clean the area around the repair so debris doesn’t interfere with fitment or sealing surfaces. Clean the area around the repair so debris doesn’t interfere with fitment or sealing surfaces. If the part interacts with water, do a leak check during the first run and again after a short operating period. Take a photo before disassembly so you can confirm orientation and fastener locations during reassembly. Clean the area around the repair so debris doesn’t interfere with fitment or sealing surfaces.