Roper RTW4516FW2 Main Drive Belt — What It Does and How to Replace It
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Understanding the Problem
What the main drive belt does: The main drive belt transfers rotation from the motor to the transmission/drum so the washer can agitate and spin. When the belt is worn, stretched, glazed, or broken the washer may not agitate or spin, may slip, or may make squealing/burning noises. Step‑by‑step diagnostic and repair steps: 1) Safety first: Unplug the washer from power. Shut off the water if you'll be moving or tipping the machine. Wear gloves and eye protection. 2) Confirm symptom: Try a quick spin test with the lid closed and the washer set to a spin/agitate cycle (only for diagnosis if safe to do so). If the motor runs (you hear it) but the tub doesn’t spin or spins slowly, suspect the belt. If there is no motor noise at all, diagnose motor/controls first. 3) Physical inspection: Pull the washer away from the wall, remove the back panel (or top/front access depending on your model) to expose the motor, pulleys and belt. Look for a belt that is cracked, glazed (shiny), stretched (loose), frayed, or broken. Also inspect pulley grooves for debris, the idler/tensioner (if present) and motor shaft for wobble. 4) Remove the old belt: With power disconnected, rotate the drum by hand to relieve tension and slip the belt off the motor pulley first, then off the transmission/drum pulley. On some models you may need to remove a small motor/bracket bolt or loosen a tensioner arm — consult your model’s service sheet if unsure. 5) Check related parts: If the belt is damaged, also inspect the motor pulley, transmission pulley, idler/tensioner, and motor mount. Replace any pulleys that are worn, bent, or show missing teeth/grooves. 6) Fit the new belt: Confirm you have the correct replacement (see Helpful Tip below). Install the belt over the transmission/drum pulley first, then stretch it onto the motor pulley. Ensure the belt sits in the pulley grooves and has proper tension (no excessive slack; it should resist moderate thumb pressure). 7) Reassemble and test: Reinstall the access panel(s), reconnect power, run a short wash/spin cycle to confirm normal agitation and spin and listen for unusual noises. 8) Final checks: After a test run, recheck belt seating and pulley alignment. Tighten any loose motor or bracket bolts. Safety note: Always disconnect power before working on the washer. If you must tip the washer to access the underside, have an assistant stabilize it and follow safe lifting practices. If you’re not comfortable with mechanical repairs, call a qualified appliance technician.
Common Symptoms
Washer won’t agitate or spin; tub spins intermittently or slowly; loud squealing or grinding during spin; burning rubber smell; visible cracked or broken belt.
Common Causes
- Normal wear and tear — belt becomes stretched, glazed, or cracked
- Belt misalignment or worn pulleys causing accelerated wear
- Foreign object caught in pulley or drum causing belt damage
- Seized motor or transmission causing belt to slip or burn
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Helpful Repair Tip
Confirm the belt is the issue by running a short cycle (power on) and listening: if the motor runs but the tub doesn’t turn or spins slowly and you can manually turn the drum with little resistance, the belt is very likely faulty. Also compare the old belt’s length and rib pattern to the replacement before installation.
Frequently Asked Questions
How do I know if I need a new drive belt or a different part?
If the motor runs (you hear it) but the tub doesn’t turn or turns slowly, and the belt is cracked, glazed, frayed, loose, or broken on inspection, replace the belt. If the belt looks good but slips or you hear grinding from the motor/pulley bearings, check/replace the pulley, idler/tensioner or motor bearings. If the motor does not run at all, investigate the motor, motor start components, lid switch, or control board before replacing the belt.
Can I install the main drive belt myself and how long does it take?
Yes — a confident DIYer with basic tools (screwdrivers, socket set, possibly pliers) can replace the belt. Typical time is 30–60 minutes. Key steps are disconnecting power, removing the access panel to reach the belt, slipping the old belt off, fitting the new belt over the pulleys ensuring correct routing and tension, then reassembling and testing. Always follow safety precautions and match the replacement belt to your exact model.
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