The defect
VEHICLE DESCRIPTION: TRANSIT BUSES. DUE TO THE ROUTING OF THE HIGH PRESSURE HYDRAULIC HOSE CONNECTING THE DISTRIBUTION MANIFOLD TO THE COOLING FAN, HYDRAULIC MOTOR OR THE HIGHER OPERATIONAL SPEED OF CNG ENGINES COULD, IN CERTAIN CIRCUMSTANCES, PUSH THE PRESSURE DEVELOPED BY THE HYDRAULIC PUMP BEYOND THE NOMINAL WORKING PRESSURE OF THE INSTALLED HOSE. THERE IS THE POSSIBILITY OF STRESSING THE HOSE BEYOND ITS MINIMUM BEND RADIUS AND/OR BEYOND ITS NOMINAL WORKING TEMPERATURE/PRESSURE RATINGS.
The risk
A HOSE FAILURE COULD OCCUR ALLOWING HYDRAULIC FLUID STEAM TO IMPINGE ONTO HOT EXHAUST COMPONENTS AND INITIATE AN ENGINE COMPARTMENT FIRE.
The remedy
SPARTAN IS DEVELOPING A FIELD RETROFIT KIT WHICH WILL CONSIST OF A NEW HYDRAULIC FLUID HOSE THAT WILL BE 3 INCHES LONGER THAN THE ORIGINAL AND HAVE A HIGHER WORKING PRESSURE RATING; A 45 DEGREE HOSE CONNECTION FITTING WILL BE ADDED AT THE FAN MOTOR INLET PORT; THE HOSE WILL BE RE-ROUTED AND ALSO CLIPPED OR CLAMPED; AND THE MANIFOLD BLOCK/PRIORITY VALVE WILL BE RELOCATED.
NHTSA's own wording · initiated by ODI
Vehicles covered
| Model | Model years |
|---|---|
| Spartan TB2242 | 1997, 1998, 1999 |
Components: ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| Spartan TB2242 | 1997 | 0 | 1 |
| Spartan TB2242 | 1998 | 0 | 2 |
| Spartan TB2242 | 1999 | 0 | 1 |
Other engine and engine cooling recalls in 1999
12 of the 392 recall campaigns reported to NHTSA in 1999 concerned the engine and engine cooling; SPARTAN MOTORS, INC. filed 45 campaigns in all.
| 99V270000 12 Oct 1999 | AMERICAN SUZUKI MOTOR CORP. |
| 99V254000 17 Sept 1999 | CALIFORNIA MOTORCYCLE CO. |
| 99V186000 12 Jul 1999 | YAMAHA MOTOR CORPORATION, USA |
| 99V171000 7 Jul 1999 | MAZDA (NORTH AMERICA),INC |
| 99V187001 23 Jun 1999 | VOLVO TRUCKS NORTH AMERICA INC |
| 99V140000 3 Jun 1999 | BUELL MOTORCYCLE CO. |
| 99V132000 20 May 1999 | AMERICAN SUZUKI MOTOR CORP. |
| 99V083000 15 Apr 1999 | TRIUMPH MOTORCYCLES |
NHTSA recalls (public domain) · all recalls of 1999