Dakota 4WD V8-4.7L VIN J (2007)
Drive Belt Tensioner: Service and Repair
Removal
3.7L/4.7L ENGINE
On 4.7L engines, the tensioner (3) is equipped with an indexing tang on back of tensioner and an indexing stop on tensioner housing. If a new
belt is being installed, tang must be within approximately 24 mm (.94 inches) of indexing stop. Belt is considered new if it has been used 15
minutes or less.
If the above specification cannot be met, check for:
-
The wrong belt being installed (incorrect length/width)
-
Worn bearings on an engine accessory (A/C compressor, power steering pump, water pump, idler pulley or generator)
-
A pulley on an engine accessory being loose
-
Misalignment of an engine accessory
-
Belt incorrectly routed.
NOTE: A used belt should be replaced if tensioner indexing arrow has moved to the minimum tension indicator. Tensioner travel stops at
this point.
1. Remove accessory drive belt.
2. Remove tensioner assembly from mounting bracket (1).
WARNING: Because of high spring pressure, do not attempt to disassemble automatic tensioner. Unit is serviced as an assembly except
for pulley on tensioner.
3. Remove pulley bolt. Remove pulley from tensioner.
