RAM 1500 Truck 2WD V6-3.9L VIN X (1999)
Belt Tensioner-5.9L Diesel-Typical (non-A/C Shown)
Drive belts on all engines are equipped with a spring loaded automatic belt tensioner. This belt tensioner will be used with all belt configurations, such
as with or without power steering or air conditioning.
CAUTION: Do not attempt to check belt tension with a belt tension gauge on vehicles equipped with an automatic belt tensioner.
Indexing Marks-3.9L V-6 Or 5.2/5.9L V-8 LDC-Gas Engines
On 3.9L V-6 or 5.2/5.9L V-8 LDC-gas engines, the tensioner is equipped with an indexing arrow on back of tensioner and an indexing mark on
tensioner housing. If a new belt is being installed, arrow must be within approximately 3 mm (1/8 inch) of indexing mark (point B-). Belt is considered
new if it has been used 15 minutes or less. If this 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.
On 3.9L V-6 or 5.2/5.9L V-8 LDC-gas engines, a used belt should be replaced if tensioner indexing arrow has moved to point-A. Tensioner travel
stops at point-A.