Samsung DV45H7000GW/A2 Drum Belt & Idler Replacement – Fix a Dryer That Won't Turn or Squeals
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Understanding the Problem
When a Samsung DV45H7000GW/A2 dryer stops tumbling, makes loud squealing/grinding noises, or produces a burning rubber smell, the most common causes are a worn or broken drum belt and/or a failing idler pulley. The belt provides torque from the motor to the drum; the idler pulley maintains belt tension and guides it. If either fails the drum will not rotate properly and can damage other components. A broken or stretched belt will usually cause the drum to spin intermittently or not at all, while a seized or noisy idler pulley often produces high-pitched squeal or grinding under load. Replacing the belt and inspecting or replacing the idler and drum rollers is a typical DIY repair for this model when these symptoms appear.
Common Symptoms
Dryer won't tumble or tumbles intermittently; loud squealing or grinding noises during operation; burning rubber smell; visible frayed or broken belt; drum wobbles or rubs.
Common Causes
- Broken, stretched, or frayed drum belt
- Worn or seized idler pulley (bearing failure)
- Worn drum rollers or bearing causing extra load on belt/idler
Popular Parts That Fix This Problem
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Helpful Repair Tip
With the dryer unplugged, open the door and try to rotate the drum by hand. Smooth resistance usually indicates a healthy belt/idler; a drum that turns very freely (or not at all) or makes noise when spun points to belt/roller/idle problems. Also check for visible frayed belt edges through the lint trap opening.
Frequently Asked Questions
Can I replace the belt and idler pulley myself, and what tools do I need?
Yes — this is a common DIY repair. Basic tools required: Phillips and flathead screwdrivers, nut drivers (usually 1/4" and 5/16"), needle-nose pliers, and optionally a socket set. Always unplug the dryer (and disconnect gas if applicable) before starting. Work on a padded surface and take photos as you disassemble to aid reassembly.
How much will parts and labor typically cost for this repair?
Parts for belt and idler replacement are inexpensive: typically $15–$60 for parts (belt and idler; kits vary). Labor from a technician usually runs $100–$250 depending on service rates and travel fees. If additional parts (rollers, motor) are needed costs rise accordingly. Always diagnose first — sometimes only the idler or a roller needs replacement.
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