AFT-50KIT Dryer Kit 28 – What This Dryer Repair Kit Fixes and How to Install It
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Understanding the Problem
Brief explanation: The AFT-50KIT (often sold as "Dryer Kit 28" by aftermarket suppliers) is a multi-part service kit intended to restore worn mechanical parts that cause tumbling, noise, and long dry times. Typical contents replace the drum belt, drum rollers or axles, idler pulley, drum glides/slides, and sometimes a thermal fuse or high-limit thermostat. These are the parts that wear first in older dryers and are commonly replaced together to eliminate repeat visits. Step-by-step diagnostics and repair (practical how-to): 1) Prepare and safety checks: - Unplug the dryer. For gas dryers, turn off the gas supply and disconnect per local code. Work in a well-lit area and keep screws/fasteners organized. - Gather tools: nutdrivers (Phillips and flat), 5/16" and 1/4" nut drivers or socket set, putty knife (to release clips), a multimeter (for continuity checks), and a shop vacuum or brush. 2) Confirm the symptoms and isolate the bad part: - No tumbling or drum won't turn: check for a broken drive belt or seized idler/roller. - Loud squeal, rumble, or thumping: likely worn drum rollers, a bad idler pulley, or worn drum glides. - Long dry times but drum turns: check rollers/hubs and the blower wheel for lint restriction; also test the thermal fuse and thermostats. - Dryer stops mid-cycle: check the thermal fuse and cycling thermostat. 3) Remove the dryer front or top (model-dependent): - On many dryers, remove the lint screen and release clips under the lint opening with a putty knife to lift the top, or remove the top screws at the back and slide the top off. - Unplug door switch connector if you open the front. Remove the front panel to access the drum (retain screws). 4) Inspect components visually and manually: - Rotate the drum by hand and watch/feel for rough spots or drag. If the drum turns unevenly, inspect rollers and glides. - Check the belt for cracks, fraying, or if it’s snapped. - Spin each drum roller and the idler pulley by hand — they should rotate smoothly without wobble. 5) Remove the old parts: - Remove the drum by lifting it out after releasing the belt from the motor/ idler. - Replace rollers by removing their retaining clips/shafts and installing new ones from the kit. - Replace the idler pulley and/or motor belt: route the new belt around the drum and under the idler and motor pulley per the dryer’s belt routing (consult model diagram if available). - Replace drum glides/slides at the front bulkhead if worn. - If the kit includes a thermal fuse or thermostat, test the old thermal fuse with a multimeter for continuity and replace only if open. 6) Reassemble and test: - Reinstall the drum, ensuring the belt is correctly seated in the drum groove and properly routed around the motor pulley and idler. - Reinstall the front panel/top and reconnect any wiring. - Plug the dryer in (and restore gas) and run a short test cycle. Listen for noise and ensure the drum turns smoothly and that the dryer heats (for electric models check voltage to the heating element if it does not heat). 7) Final checks: - Check exhaust and lint trap for blockage. Clean ducts if necessary. - Re-check fasteners after the first load. Safety note: Always disconnect power before servicing. For gas dryers, shut off gas supply. If you’re unsure about working with gas connections or internal electrical components (heating element, motor wiring), contact a qualified appliance technician.
Common Symptoms
Dryer won't tumble, loud squealing or rumbling during operation, visible belt damage, drum wobble, dryer runs but takes excessively long to dry, dryer stops mid-cycle.
Common Causes
- Worn or broken drive belt
- Seized or worn drum rollers / axle bearings
- Failed idler pulley or worn drum glides causing extra friction
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Helpful Repair Tip
To confirm the faulty part quickly: rotate the drum by hand with the front panel removed. If the drum is very hard to turn or feels gritty, the rollers or idler are likely bad. If the drum turns freely but won't tumble when powered, the belt is likely broken.
Frequently Asked Questions
Do I have to replace everything in the kit at once?
Not always. Replace only the failed components that your inspection confirms are bad. However, because rollers, belt and idler wear together and are inexpensive, replacing the belt and rollers together is good preventative maintenance and often prevents another repair soon after.
How long does it take to install an AFT-50KIT (Dryer Kit 28)?
For a competent DIYer with basic tools, replacing belt, rollers and idler typically takes 45–90 minutes. If you’re also replacing the thermal fuse or doing a full teardown to clean the ductwork it may take up to 2 hours. If you’re uncomfortable with gas or internal wiring, call a pro.
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