WTW4900BW1 Washer Pulley, Splutch, Clutch & Cam Kit — What These Parts Fix and How to Replace Them
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Understanding the Problem
What these parts do: On Whirlpool top-load machines like the WTW4900BW1, the drive pulley, clutch, splutch (combined spline/clutch components in some aftermarket kits) and cam kit transmit motor torque to the basket and control the engage/disengage action for agitate and spin. When one or more of these parts fail you’ll commonly see slipping, poor or no spin, loud grinding or squealing noises, burn smell, and slow or no agitate. 1) Initial checks (quick diagnosis): 1. Unplug the washer and shut off water. 2. Run a short drain/spin or spin-only cycle and listen: is noise only during spin? Is there no spin at all but motor hums? 3. Inspect for belt issues (if model has a belt/pulley) by removing back panel or access panel and visually checking belt condition/tension. 4. Manually try to spin the inner tub (with power off) — if it turns freely, motor/drive belt might be fine; if it’s hard or catches, clutch/cam may be binding. 5. Smell for burned odor — indicates slipping clutch or motor overheating. 2) Which parts to check first: 1. Drive pulley and belt (wear, cracks, glazing) — easiest to inspect. 2. Clutch assembly / splutch (wear on friction surfaces, burned or glazed lining, broken springs) — common on machines that slip during spin. 3. Cam kit (plastic cam dogs or gear teeth worn, broken posts) — causes engagement failure or loud grinding. 4. Motor coupling/gearcase (if your model uses a gearcase instead of direct clutch) — check for leaks, metal debris, or broken couplers. 3) Step-by-step replacement overview (generalized for WTW4900-series top-load washer): 1. Tools: socket set, nut drivers, pliers, flat screwdriver or putty knife, adjustable wrench, work gloves, replacement kit, rag, container for water. 2. Safety: unplug washer and turn off water supply. 3. Access: Pull the washer away from wall. Remove console or control panel clips (use putty knife to release spring clips) and lift/tilt console back. Remove the cabinet/front or rear access panel per model instructions to reach the drive assembly. 4. Drain and remove the agitator / basket interference parts to expose the transmission output and pulley area. For most Whirlpool top-loads: remove fabric softener cap, unscrew agitator bolt (usually 5/16–3/8”), and pull out agitator. 5. Remove the drive belt (if present) from the motor pulley and main pulley. 6. Remove the pulley: loosen and remove the nut/bolt retaining the pulley (use proper socket; hold shaft to prevent turning). Pull pulley straight off; you may need a slide hammer or penetrating oil if seized. 7. Inspect and remove clutch/splutch: loosen the clutch retaining fasteners (often a large nut or multiple screws). On splutch/clutch assemblies, note orientation of friction pads and springs. Remove worn clutch assembly. 8. Inspect cam kit: on many Whirlpool models the cam (agitator cam) sits on the transmission output; worn plastic dogs or cam pieces cause engagement failure. Remove and replace cam pieces per kit instructions. 9. Clean mating surfaces: remove debris, grease, old friction dust. 10. Install new parts: install new cam pieces, new clutch/splutch assembly and reassemble pulley and belt. Make sure friction surfaces are aligned and any springs or clips are seated correctly. Torque bolts to manufacturer specs if available (hand-tight plus a small snug for clutch nut — avoid overtightening which can compress friction lining). 11. Reassemble washer cabinet, reconnect wiring and hoses, restore power and water. Run a spin/agitate test to confirm operation. 4) Practical hints while replacing: - Keep track of all washers, clips and orientation of parts. - If the clutch was glazed from slipping, surface contamination can re-glaze new parts quickly if belt is worn—replace the belt if it shows wear. - If you see metal shavings in the gearbox/under the clutch, verify gearcase condition; replace if damaged. Safety note: Always disconnect power and water before working on the washer. If you’re unsure about removing the cabinet or draining the tub, stop and consult the service manual or a qualified technician.
Common Symptoms
Washer won’t spin or spins intermittently, slow or no agitation, loud grinding or squealing during spin, burning rubber smell, visible wear on pulley or broken cam dogs.
Common Causes
- Worn or glazed clutch friction pads or splutch assembly
- Damaged or broken cam dogs in the cam kit (prevents engagement)
- Worn, cracked or loose drive pulley or belt causing slipping
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Helpful Repair Tip
Confirm the clutch/splutch is bad by removing the pulley and turning the transmission output by hand — if the drum slips at the clutch engagement surface or you see worn/fractured friction material, the clutch/splutch needs replacement.
Frequently Asked Questions
Can I replace just the pulley or do I need to replace the clutch and cam too?
If the pulley or belt is the only worn component (cracks, glazing, loose fit), you can replace just the pulley and belt. However, if the washer was slipping (burning smell) or you see worn friction material on the clutch/splutch or broken cam dogs, replace the clutch/splutch and cam kit at the same time to avoid repeat failures.
How long does this repair take and do I need special tools?
Expect about 1–2 hours for an experienced DIYer to replace pulley/clutch/cam kit if you have basic hand tools (socket set, screwdrivers, pliers). A service manual or online teardown for your exact model helps. Special tools are rarely required, though a pulley puller or strap wrench can make removal easier if parts are seized.
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