Idler Arm Assembly, Idler Pulley, Drum Idler, Belt Tensioner, Idler Wheel Assembly, Drum Support Idler

134793500, 134793512, 7134793500

Frigidaire, Electrolux, White Westinghouse, Kelvinator, Gibson, Kenmore, Sears, Tappan

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Professional Repair Time: 30-45 minutes
DIY Repair Time: 45-60 minutes
Difficulty Rating: Moderate (2.5/5) — Requires basic mechanical skills, careful handling of drive belt, idler assembly removal and installation, attention to detail, understanding of belt tension

1. Unplug the dryer from the electrical outlet to ensure complete power disconnection, or turn off power at the circuit breaker if the dryer is hardwired.
2. Verify power is off by attempting to turn on the dryer. The dryer should not respond and the display should be blank.
3. Pull the dryer away from the wall to provide access to the rear panel and working space around the dryer.
4. Take multiple photos of the idler assembly location, mounting position, drive belt routing, and spring tension before disassembly. Document from multiple angles. This is absolutely critical for proper reassembly. Use a camera or smartphone to capture high-quality images.
5. Remove the dryer front panel or access panel by removing the mounting screws (typically 4-6 screws along the bottom or sides of the front panel). Set the screws aside in a safe location.
6. Carefully lift or slide the front panel away from the dryer frame to expose the interior components and idler assembly.
7. Locate the idler arm and pulley assembly mounted on the dryer frame, typically on the left or right side near the drum (location varies by model).
8. Take additional detailed photos of the idler assembly mounting, spring attachment, drive belt routing, and how the pulley contacts the belt before disconnecting.
9. Locate the drive belt that runs around the drum and under the idler pulley wheel. Note how the belt is routed and how the idler pulley maintains tension on the belt.
10. Locate the idler arm mounting screw or bolt that secures the idler assembly to the dryer frame.
11. Remove the idler arm mounting screw or bolt using a Phillips screwdriver, square drive bit, or socket wrench (depending on your dryer model).
12. Carefully remove the old idler arm and pulley assembly from the dryer frame and place it on a clean work surface with adequate space for inspection.
13. Inspect the old idler assembly for visible damage such as a worn, flattened, or cracked pulley wheel, broken spring mechanism, cracked plastic housing, broken mounting bracket, or corrosion. This confirms the diagnosis.
14. Inspect the drive belt for wear, fraying, cracking, or damage. If the belt is worn or damaged, replace it along with the idler assembly. A worn belt will cause premature failure of the new idler assembly.
15. Inspect the drum bearing or support rollers for wear or damage. If the drum is not rotating smoothly, the bearing or rollers may need replacement along with the idler assembly.
16. Inspect the idler assembly mounting location on the dryer frame for damage, corrosion, or debris. Clean the mounting area if necessary using a dry cloth.
17. Unpack the new 134793511 idler arm and pulley assembly from its packaging. Handle carefully to avoid damaging the pulley wheel or spring mechanism.
18. Verify the idler assembly specifications match the old assembly: dimensions approximately 3-4 inches x 2-3 inches x 1-2 inches, pulley wheel diameter (typically 1.5-2 inches), spring mechanism design, mounting hole location and size.
19. Compare the new idler assembly to the old one to verify the dimensions, pulley wheel size, spring mechanism, mounting hole, and overall appearance match. Ensure you have the correct replacement part.
20. Inspect the new idler assembly for any damage or defects before installation. The pulley wheel should be smooth and round with no flat spots, cracks, or damage. The spring mechanism should move freely. The plastic housing should be intact with no visible cracks.
21. Position the new idler arm and pulley assembly on the dryer frame, aligning the mounting hole with the mounting point and orienting the pulley wheel to contact the underside of the drive belt.
22. Install the idler arm mounting screw or bolt to secure the assembly to the dryer frame. Tighten firmly but do not overtighten, which can crack the plastic housing or strip the screw hole.
23. Verify the idler assembly is securely mounted and does not wobble or shift when gently pressed.
24. Verify the idler pulley wheel is positioned correctly to contact the underside of the drive belt. The pulley should press against the belt with consistent pressure across the entire pulley width.
25. Verify the spring mechanism is functioning properly by gently pushing the idler arm toward the belt. The arm should move smoothly and spring back when released.
26. Manually rotate the drum by hand to verify the belt moves smoothly and the idler pulley rotates freely without binding or sticking.
27. Verify the belt tension by pressing on the belt midway between the drum and idler pulley. The belt should deflect approximately 0.5-1 inch when moderate pressure is applied. If the tension is incorrect, verify the idler assembly is positioned correctly.
28. Reinstall the dryer front panel by carefully positioning it on the dryer frame and securing it with the mounting screws.
29. Verify the front panel is fully seated and aligned with the dryer frame.
30. Push the dryer back into position against the wall.
31. Restore power by plugging in the dryer or turning on the circuit breaker.
32. Turn on the dryer and set it to a drying cycle.
33. Verify the dryer drum rotates smoothly and consistently throughout the cycle. The drum should rotate at a steady speed without hesitation or irregular movement.
34. Listen for unusual noises from the dryer interior. The dryer should operate quietly without squealing, squeaking, grinding, or other unusual sounds.
35. Feel the dryer exterior to verify normal heating operation. The dryer should feel warm but not excessively hot.
36. Allow the dryer to complete the full drying cycle without interruption.
37. Verify the clothes are dry at the end of the cycle, confirming proper drum rotation and heating operation.
38. Run multiple drying cycles to verify the idler assembly operates properly under normal conditions without issues.
39. Monitor the dryer for 24-48 hours to ensure the idler assembly operates properly without issues.

Safety Notes: Always unplug the dryer before working on it to prevent electrical shock. Handle the drive belt carefully to avoid damaging it during idler assembly removal and installation. Verify the idler pulley wheel is positioned correctly to contact the drive belt—improper positioning can cause belt slipping or premature wear. This repair requires moderately advanced mechanical skills and careful attention to detail—most homeowners can complete this repair successfully with proper precautions and documentation.

1. Document the drive belt routing and idler pulley position with detailed photos before removal. Take high-quality photos of the drive belt path around the drum, how the belt sits on the idler pulley wheel, the idler assembly mounting position, and the spring tension. This documentation is critical for ensuring correct reinstallation and proper belt tension.
2. Inspect the drive belt for wear or damage when replacing the idler assembly. A worn or damaged belt will cause premature failure of the new idler assembly and reduce dryer efficiency. If the belt shows signs of wear (fraying, cracking, glazing, or flat spots), replace it along with the idler assembly. A new belt and idler assembly combination ensures optimal performance and longevity.
3. Verify the idler pulley wheel is smooth and round before installation. Run your hand over the pulley surface to check for flat spots, cracks, or damage. A worn pulley wheel will slip on the belt and cause poor drum rotation even with a new idler assembly installed. If the pulley is worn, verify you have the correct replacement part that includes a new pulley wheel.
4. The idler pulley wheel should contact the underside of the drive belt with consistent pressure across the entire pulley width. If the pulley is tilted or misaligned, the belt will wear unevenly and the idler assembly will fail prematurely. Verify the idler assembly is positioned correctly and the mounting screw is tight but not overtightened.
5. Test belt tension after installation by pressing on the belt midway between the drum and idler pulley. The belt should deflect approximately 0.5-1 inch when moderate pressure is applied. If the tension is too tight, the belt and idler assembly will wear prematurely. If the tension is too loose, the belt will slip and the drum will not rotate properly.
6. Manually rotate the drum by hand after installation to verify smooth operation. The drum should rotate freely and smoothly without binding, sticking, or hesitation. If the drum rotation is rough or irregular, verify the idler assembly is positioned correctly and the belt tension is appropriate.
7. The spring mechanism inside the idler arm automatically adjusts tension as the belt wears. This self-adjusting feature maintains optimal belt tension throughout the belt's service life. Over time, the spring weakens and eventually fails, causing loss of belt tension and drum rotation problems. When the spring fails, the entire idler assembly must be replaced.
8. Listen carefully for squealing or squeaking sounds during the first few cycles after installation. New idler assemblies sometimes produce minor squeaking during the first few cycles as the pulley wheel breaks in. This should diminish after a few cycles. If squeaking persists or increases, stop the dryer and verify the idler assembly is positioned correctly and the belt tension is appropriate. Persistent squeaking may indicate a defective idler assembly that requires replacement.
9. The idler assembly is a high-wear component that typically fails after 5-10 years of regular use. With average use (3-4 loads per week), the idler assembly typically lasts 7-10 years before failure. Replace the idler assembly promptly when failure is detected to prevent drive belt damage and to restore reliable dryer operation.
10. This repair is cost-effective compared to dryer replacement. The cost of idler assembly replacement ($40-80) is far less than the cost of a new dryer ($600-2,000+). Replace the idler assembly promptly when failure is detected to prevent the need for expensive dryer replacement and to restore reliable, efficient dryer operation.

• Dryer drum not rotating at all (no drum movement)
• Dryer drum rotating slowly or intermittently (inconsistent rotation)
• Squealing or squeaking sounds from dryer during operation
• Drive belt slipping on pulley (visible belt wear or fraying)
• Dryer taking longer than normal to dry clothes
• Dryer not heating (because drum is not rotating properly)
• Visible wear or flat spots on pulley wheel
• Idler arm feeling loose or wobbly when manually rotating drum
• Drum stopping during drying cycle
• Belt not maintaining tension
• Pulley wheel cracked or broken
• Spring mechanism not providing proper tension