Defect summary
THE FOOT TREADLE ACCELERATOR IS EQUIPPED WITH A RETURN SPRING WHICH SERVES AS A BACKUP DEVICE FOR THE THROTTLE RETURN SPRING MOUNTED ON THE ENGINE; SHOULD BOTH SPRINGS FAIL SIMULTANEOUSLY THE ENGINE THROTTLE COULD BECOME STUCK OPEN.
Consequence
THE THROTTLE WOULD NOT DISENGAGE WHEN FOOT PRESSURE ISREMOVED FROM THE TREADLE; THE VEHICLE WOULD BE SUBJECT TO LOSS OF SPEED CONTROLAND A POSSIBLE ACCIDENT.
Remedy
REPLACE THE TREADLE RETURN SPRING WITH A NEWLY DESIGNED SPRING.
Notes
SYSTEM: THROTTLE LINKAGES AND CONTROL.VEHICLE DESCRIPTION: OPEN AIR, 4 WHEEL DRIVE BUS; 4 CYLINDER ENGINES RUNNING ONGASOLINE, PROPANE, OR DIESEL; ALSO, TOWS UP TO THREE TRAILING COACHES.
Source: NHTSA ODI recalls file, campaign 92V031000. Text as published by NHTSA.