Cooling Fan - Noise on Light Load Conditions
NO: 07-08-94GROUP: Cooling
DATE: Nov. 4, 1994
SUBJECT:
Cooling Fan Noise
THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN NUMBER 07-04-93 DATED NOV. 26, 1993. PLEASE MAKE A NOTE TO REFER TO THIS BULLETIN WHEN THESE SYMPTOMS ARE ENCOUNTERED. THE CHANGES INVOLVE THE ADDITION OF COMPONENTS TO INCLUDE " MAX COOLING " EQUIPPED VEHICLES. CHANGES ARE HIGHLIGHTED WITH **ASTERISKS**.
MODELS:
1992 - 1995 (AB) Ram Van /Ram Wagon
1992 - 1995 (AN) Dakota
SYMPTOM/CONDITION:
Fan noise (roar) may occur during light load driving (city or highway) when ambient temperatures are high. Customers may also complain of a perceived loss of power or automatic transmission slippage when the fan engages.
**PARTS REQUIRED:**
(AN) 3.9L and 5.2L Engines with Standard Cooling
1 52028307 Fan Drive
1 52027999 Fan
**(AN) 3.9L and 5.2L Engines with Max Cooling **
1 4796867 Fan Drive
1 52028440 Fan (9 Blade)
1 52027793 Radiator Cap (18 PSI)
(AB) All Engines with Standard Cooling
1 52028305 Fan Drive
1 52027999 Fan
**(AB) 5.2L and 5.9L Engines with Max Cooling **
1 4796866 Fan Drive
1 52028440 Fan (9 Blade)
1 52027793 Radiator Cap (18 PSI)
REPAIR PROCEDURE:
This bulletin involves installing a revised viscous drive, cooling fan and radiator cap on vehicles equipped with Max Cooling.
1. Remove the fan and fan drive and install the parts listed above.
2. Start the engine and operate it at 2000 RPM for 2 minutes to pump fluid into new fan drive.
POLICY:
Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation No. 07-20-15-92 (AB) Van/Wagon 0.8 Hrs.
(AN) Dakota 0.5 Hrs.
FAILURE CODE: P8 - New Part