Drive Belt - Growl on Cold Start
NUMBER: 07-01-00GROUP: Cooling
DATE: Mar.31, 2000
SUBJECT:
Cold Off-Idle Engine "Growl" Sound
MODELS:
1998 - 2000 (LH) Concorde/Intrepid/LHS/300M
OVERVIEW:
This bulletin involves raising the belt tension on the generator/power steering drive belt.
SYMPTOM/CONDITION:
Low tone "growl" sound coming from engine following a cold start while in Drive or Reverse with engine RPM between 1000 and 1300 RPM.
DIAGNOSIS:
Engine must be cooled to ambient temperature. Start engine; with one foot on the brake go to Drive or Reverse and gently raise engine speed to between 1000 and 1300 RPM. If "growl" sound can be heard coming from the generator/power steering drive belt check the belt tension with Miller Special Tool 7198 or equivalent. If belt tension is below 120 lbs., perform the Repair Procedure.
EQUIPMENT REQUIRED:
# 7198 Miller Special Tool, Belt Tension Gauge
REPAIR PROCEDURE:
1. Loosen the generator/power steering drive belt idler mounting nut 1/2 turn.
NOTE: ACCESS TO THE BELT AND ADJUSTING SCREW VARY WITH THE ENGINE SIZE. REFER TO GROUP 7 OF THE 2000 CONCORDE/INTREPID/LHS/3OOM SERVICE MANUAL (PUBLICATION NO.81-270-0040) FOR
ACCESS POINTS.
2. Rotate the adjusting screw clockwise until belt tension is between 120 and 140 lbs.
3. Tighten the idler mounting nut to 54 Nm (40 ft. lbs.).
4. Verify belt tension.
POLICY: Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
FAILURE CODE: 68- Noisy