| Issue ID | 900790 |
| Internal NHTSA # | 10442861 |
| Manufacurer | TIFFIN MOTORHOMES, INC. |
| Brand | TIFFIN |
| Model | ALLEGRO BAY |
| Model Year | 2007 |
| File date | 02/01/12 |
| Component | SERVICE BRAKES, HYDRAULIC |
| Product type code | VEHICLE |
| Description of the problem | This is a 38' motorhome built on a freightliner front engine diesel chassis. This chassis has hydraulic brakes (not air brakes). Brakes failed while exiting a freeway - narrowly avoiding a crash. Returning home from a week away in an rv resort. Stopped for fuel about 10 miles from home. Noticed a smell of hot brakes, but nothing else unusual. Did a complete walkaround after fueling - all normal. About 8 miles later, when exiting the freeway, the brake pedal went completely to the floor with no effect. The engine brake was engaged quickly and after some rapid pumping on the pedal, got enough brake effect that i could avoid a crash at the end of the ramp and made it safely to a place to stop and get off the road. Upon walkaround, there was an extreme smell of hot brakes, heavy brake dust inside rear rims, and a puddle of hydraulic fluid (about 1 quart) under the master cylinder. Note that there was no downhill or other extended braking prior. Vehicle was parked overnight. After calling for a tow in the morning and returning to the coach, there was enough pedal to navigate the coach to a place accessible to the tow truck and it was towed to a freightliner service center. The service center found that there was obvious signs of overheating. Rear abs sensors were melted from heat. Pads and rotors destroyed. Troubleshoot system and found no problems other than apparently rear caliper pistons had stuck, causing brakes to drag, overheating the system, resulting in failure. Upon posting my experience on a tiffin web site, i learned that there are dozens of coaches that have had same experience. Freightliner knows about it - they instructed service center to use special grease to lube caliper (grease used for aircraft applications). Apparently same brake calipers subject of recall in gm workhorse chassis for motorhomes. Significant safety issue-lucky to avoid crash! |
| Vehicle Mileage at Failure | 12300 |
| Number of Occurences | 1 |
| Source of the issue | NHTSA WEB SITE |
| City and State | FALLBROOK, CA |
| VIN pattern | 4UZACLBW47CXXXXXX |
| Was vehicle invloved in a crash? | N |
| Was vehicle involved in a fire? | N |
| Was incedent reported to police? | N |
| Was medical attention required? | |
| Was part original equipment? | |
| No. of injured persons | |
| No. of fatalities | |
| Date of purchase | 07/08/26 |
| Was original owner? | N |
| Anti-lock brakes | N |
| Cruise control | N |
| Number of cylinders | |
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| Transmission type | |
| Vehicle speed | 55 |
| DoT tire identifier | |
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| Was defective tire repaired? | |
| Date of manufacture | |
| Type of child seat code | |
| Type of restraint | |
| Dealer's name | |
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