How to Replace the Drive Belt on a Frigidaire Dryer
The drive belt on Frigidaire dryers wraps around the drum exterior and routes through an idler pulley tensioner to the motor shaft. When the belt breaks — typically after 8-15 years of use — the drum stops spinning while the motor continues to run. Some Frigidaire models have a belt switch that detects breakage and shuts down the dryer completely (safety feature preventing motor overheat).
Belt replacement requires removing the top and front panels and lifting the drum out. Despite sounding involved, this is a common 25-30 minute repair. The belt (137315300 or model-specific equivalent) costs $15-$25 and is widely available.
Before You Start
- Tools needed: Phillips #2 screwdriver, 1/4-inch nut driver, flat-blade screwdriver, flashlight
- Parts needed: Drive belt 137315300 (~$15-$25), idler pulley (inspect — replace if noisy, ~$15-$25)
- Time required: 25-30 minutes
- Difficulty: Intermediate
- Safety warning: Unplug the dryer. For gas models, shut off gas supply. The drum is light but awkward to handle.
Do You Have the Right Tools?
Gas leak detector ($130), thermal fuse tester ($95), belt tension gauge, and vent inspection camera ($180). Our technician arrives with $15K+ in professional tools — your diagnostic is free.
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Step-by-Step Instructions
Step 1: Access the Drum
Remove the top panel (2 rear screws or spring clips). Remove the front panel (2 screws at top visible with top panel off, disconnect door switch wires, lift panel off bottom clips). You now have direct access to the drum.
Step 2: Release Belt Tension and Remove Drum
Reach under the drum to locate the idler pulley (lower right area). Push the idler arm toward the motor to release belt tension. With the other hand, slip the belt off the motor shaft. The belt goes slack around the drum.
Lift the drum slightly forward and up, sliding it out through the front opening. Set the drum on a blanket nearby. Remove the old belt from around the drum (or collect broken belt pieces from inside the cabinet).
Step 3: Inspect the Idler Pulley
With the drum out, spin the idler pulley wheel by hand. It should rotate smoothly and quietly. If it squeals, grinds, or has flat spots, replace it now — a failing idler destroys new belts quickly. The idler is typically held by a single mounting bolt and spring.
Step 4: Install the New Belt
Place the new belt around the drum exterior with the flat (smooth) side against the drum and the ribbed side facing outward. The belt should be approximately centered on the drum surface — Frigidaire drums do not have a belt guide groove, so visual centering is important.
Step 5: Reinstall the Drum and Route the Belt
Lift the drum back into the cabinet, setting the rear edge onto the drum support rollers first, then lowering the front. Thread the belt down from the drum toward the motor/idler area.
Route the belt: from the drum, the belt goes straight down to wrap under and around the idler pulley (ribbed side on pulley), then continues to wrap around the motor shaft (ribbed side on motor shaft). Push the idler arm toward the motor to create slack for routing. Release — the idler spring pulls the pulley outward, tensioning the belt.
Step 6: Verify Routing and Reinstall Panels
Spin the drum by hand one full revolution. The belt should track straight on the drum without riding to one edge. The drum should spin with smooth resistance (from the belt/motor engagement).
Reconnect the door switch wires. Install the front panel (hang on bottom clips, tilt up, install top screws). Install the top panel. Run a timed-dry cycle to verify: drum spins smoothly, no squealing, consistent speed.
Troubleshooting Common Issues
- Belt rides off drum edge: Belt is the wrong length (too loose allows wandering) or the drum is not seated properly on the rear rollers. Verify drum sits level on both rollers.
- Squealing after new belt: Idler pulley bearing is worn. Replace the idler.
- Drum still does not spin: Belt may be routed incorrectly (skipping the idler or motor shaft). Verify routing matches: drum → idler → motor.
- Belt breaks again quickly: Idler pulley bearing seized and burned through the belt. Always inspect the idler during belt replacement.
Safety First — Know the Risks
Gas dryers carry carbon monoxide and explosion risk. Even electric dryers involve 240V circuits that can deliver a fatal shock. Our techs are licensed and insured — let them handle the risk.
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When to Call a Professional
- If the motor shaft is damaged (belt cannot grip)
- If drum rollers are seized (creates excess drag that burns belts)
- If the dryer also has a no-heat condition (indicates broader system failure)
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Cost Comparison: DIY vs Professional
| DIY | Professional | |
|---|---|---|
| Parts | $15-$50 (belt + idler) | $15-$50 |
| Labor | $0 | $120-$180 |
| Time | 0.5h | 0.3h |
| Risk | Low | Warranty included |
The Real Cost of DIY
Average DIY attempt: $150-400 in tools you may use once, plus the risk of further damage. Our diagnostic visit costs $0 — we find the problem and give you an honest quote.
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FAQ
Q: How do I know if the belt is broken? A: Motor runs (hum at bottom) but drum does not spin. Some models shut off completely via belt switch.
Q: What is the routing? A: Flat side to drum, ribbed side on idler and motor pulleys. Belt goes: drum → under idler → around motor shaft.
Q: Does Frigidaire have a belt switch? A: Some models yes — detects breakage and prevents motor overheat by shutting down the dryer.
Q: What belt part number? A: 137315300 for most models. Verify against your specific model number. Cost: $15-$25.
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