Why Does My Dexter Nev-R-Adjust 10-72 Make a Grinding Noise When Braking?
A grinding noise from your Dexter Nev-R-Adjust 10-72 brake assembly is one of the most alarming sounds a trailer owner can hear. This typically indicates metal-on-metal contact, meaning the brake lining has worn down to the backing plate or a foreign object is lodged between the drum and the shoe. The Nev-R-Adjust system automatically maintains shoe-to-drum clearance, but it cannot compensate for completely worn-out linings. If left unchecked, grinding will damage the drum surface, leading to costly repairs. Refer to our Dexter Nev-R-Adjust 10-72: Complete Brake Wiring & Assembly Guide for proper installation checks.
How Do I Fix a Squealing Sound from the 10-72 Brake Assembly?
Squealing is often a high-frequency vibration between the brake shoe and the drum, sometimes caused by glazing or moisture. Begin by inspecting the brake shoes for glazing (a shiny, hardened surface). Lightly sand the friction material with 80-grit sandpaper to restore bite, then clean all dust with brake cleaner. If the issue persists, check the automatic adjuster mechanism: a seized adjuster can prevent proper shoe seating. The 10-72’s self-adjusting feature works via a star wheel and cable assembly that should move freely. For a step-by-step breakdown of the adjuster parts, see our Hub Assembly Component Breakdown & Replacement Guide.
What Causes a Clicking Noise When Trailer Is in Motion but Not Braking?
A rhythmic clicking sound that increases with wheel speed points to a mechanical obstruction within the hub assembly. Common culprits include a loose brake shoe hold-down spring, a worn wheel bearing, or debris stuck in the Nev-R-Adjust mechanism. The 10-72’s adjuster cable can occasionally become misrouted, catching on the backing plate edge. Jack up the trailer, spin each wheel by hand, and listen for the source. Remove the drum and examine the adjuster lever and star wheel for free movement. If bearings are noisy, refer to our Weight Distribution & Load Leveling Tips for proper load balancing that prevents premature bearing wear.
Is Your Dexter Nev-R-Adjust 10-72 Squeaking Only in Reverse?
Squeaking exclusively in reverse typically indicates the automatic adjuster is over-tightening or the brake shoes are not retracting fully. The Nev-R-Adjust system is designed to activate only when backing up, so if the star wheel is improperly adjusted initially, you’ll hear a scraping or squeaking. On a flat surface, back the trailer up slowly while applying light brake pressure — this should reset the adjuster. If the noise continues, manually back off the star wheel 10-12 clicks using a brake spoon. Ensure the adjuster cable is routed through the guide correctly; a misrouted cable can cause the lever to bind. For wiring and electrical checks that affect brake response, see the Dexter Nev-R-Adjust 10-72: Common Noise Issues & Fixes.
| Noise Type | Likely Cause | Severity | Initial Fix | Cost Estimate (USD) |
|---|---|---|---|---|
| Grinding | Worn brake shoes, metal-on-metal | Critical | Replace shoes & drum | $120–$250 |
| Squealing | Glazed shoes, high-frequency vibration | Moderate | Sand shoes, clean drum | $0–$30 |
| Clicking | Loose spring, debris, bearing wear | Moderate | Inspect & retension springs | $0–$50 |
| Reverse Squeak | Over-tight adjuster, misrouted cable | Low | Back off star wheel 10 clicks | $0–$20 |
How to Diagnose a Thumping or Vibration When Braking with the 10-72?
A thumping sensation through the brake pedal or trailer frame indicates brake drum out-of-roundness or a seized brake shoe at the anchor pin. The Nev-R-Adjust 10-72 drum has a maximum runout tolerance of 0.006 inches; any more and you’ll feel a pulsing. Use a dial indicator to measure drum runout while rotating the hub. If out of spec, the drum must be machined or replaced. Thumping can also stem from uneven tire wear or a shifted load. Check your trailer’s weight distribution using the guidelines in our Weight Ratings & Load Analysis for Safe Towing article. An overloaded trailer exaggerates brake imbalance, amplifying vibrations.
What Owners Say About the Dexter Nev-R-Adjust 10-72 Noise Issues
Trailer owners on forums and review sites report mixed experiences with the 10-72’s noise profile. Many praise the automatic adjustment for keeping brakes consistent, but a subset notes persistent squealing after bedding-in. One owner on a camping forum described: “After 500 miles, my 10-72 started a metallic chirp. I cleaned the drums and sanded the shoes — gone for another 1,000 miles. It returns in wet weather.” Another owner towing a 7,000-lb boat shared: “Clicking noise drove me crazy. Found a loose adjuster cable clip. Replaced it for $8 at a Dexter dealer.” A third review highlighted the importance of initial adjustment: “If you install them without pre-setting the star wheel, they’ll squeak in reverse forever.” For buying decisions, read our Comprehensive Buyers Guide & Comparison for owner-rated durability.
Frequently Asked Questions
Why are my Dexter 10-72 brakes silent when dry but noisy when wet?
Water acts as a lubricant between the brake shoe and drum, reducing friction and allowing micro-vibrations that produce a squeal. As the drum heats up, the moisture evaporates and noise typically stops. Lightly applying the brakes for a few seconds after water exposure helps dry the system.
Can I use brake grease on the Nev-R-Adjust mechanism to stop noise?
No. Never apply grease to brake shoes or the friction surface. Use a high-temperature brake lubricant only on the backing plate contact points (shoe tabs and anchor pin). The adjuster star wheel and cable should be dry or lightly coated with anti-seize compound, not grease.
How often should I inspect the 10-72 automatic adjuster?
Inspect the adjuster mechanism every 3,000 miles or annually, whichever comes first. Look for corrosion on the cable, bent linkage, and free movement of the star wheel. A stuck adjuster is a primary cause of noise and uneven brake wear.
Does the Dexter Nev-R-Adjust 10-72 require a break-in period?
Yes. A proper break-in involves 20-30 moderate stops from 20 mph with cool-down intervals between each. This seats the shoes to the drum and prevents glazing. Skipping break-in often leads to premature squealing and reduced braking efficiency.
Why does my brake controller show high amperage with the 10-72?
High amperage (above 12 amps per brake) suggests the brakes are dragging. The Nev-R-Adjust may have over-adjusted, or the shoe return springs are weak. Check for binding at the adjuster lever and measure current with a clamp meter. Adjust star wheel back 5-7 clicks as needed.
Can I replace just the brake shoes, or do I need a full hub assembly?
You can replace shoes alone if the drum surface measures within spec (maximum diameter for a 10-inch drum is 10.090 inches). However, if the drum is scored or warped, replacement is recommended. Many owners opt for a pre-assembled hub assembly for convenience — see our hub breakdown guide for compatible parts.
