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TSB 95-06-15 A/C Whistle
Publication Date: MARCH 27, 1995

LIGHT TRUCK: 1995 BRONCO, F SUPER DUTY, F-150-350 SERIES

ISSUE: A "whistle" noise may be heard in the A/C system when the controls are set at "MAX A/C" on some vehicles. This may be caused by a small drain hole in the Recirculation Duct.

ACTION: Locate the drain hole in the recirculation duct from the inside of the vehicle. Refer to Figure 1. The recirculation duct is located on the right side of the passenger compartment just above where the passenger's right foot would be. Using a small file, rough up the edges of the drain hole. This will reduce the possibility of a whistle noise.

OTHER APPLICABLE ARTICLES: NONE
WARRANTY STATUS: Eligible Under The Provisions Of Base Warranty Coverage

OPERATION DESCRIPTION TIME
950615A Eliminate Whistle Noise 0.2 Hr.

For other TSBs, check here.

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TSB 84-12-22 Cowl Screen
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TSB 91-20-12 A/C Pressure Relief Leak

Publication Date: OCTOBER 2, 1991

LIGHT TRUCK: 1987-91 BRONCO, F-150-350 SERIES
1988-91 F SUPER DUTY, F-47

ISSUE: There may be a loss of A/C refrigerant through the A/C compressor high relief valve during idle and stop-and-go traffic conditions. Eventually, there may be a lack of cooling and oil stains may appear around the A/C compressor high pressure relief valve.

The excessive discharge pressure is caused by the recirculation of higher temperature engine compartment air passing through the condenser during idle and stop-and-go traffic conditions. Normally, cooler ambient air passes through the condenser. Since the refrigerant in the condenser cannot be sufficiently cooled by this high temperature air, excessive head pressures are created causing refrigerant to be vented through the high pressure relief valve.

ACTION: Replace the radiator lower air shield, located between the lower radiator support and the front bumper, with a new radiator lower air deflector ( F1TZ-8327-B ). This new air deflector is larger than the old air shield and will minimize the amount of hot air recirculation through the condenser. Refer to the 1991 Bronco, Econoline, F-Series, F-Super Duty Truck Shop Manual, Section 01-08, for service details.

NOTE: TO REPLACE THE DEFLECTOR ON OLDER VEHICLES, IT WILL BE NECESSARY TO DRILL HOLES, FOLLOWING THE HOLE PATTERN IN THE NEW DEFLECTOR, BEFORE IT CAN BE ATTACHED.

PART NUMBER PART NAME
F1TZ-8327-B Radiator Lower Air Deflector

OTHER APPLICABLE ARTICLES: NONE
SUPERSEDES: 91-14-13
WARRANTY STATUS: Eligible Under Basic Warranty Coverage

OPERATION DESCRIPTION TIME
912012A Install New Air Deflector 0.4 Hr.

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TSB 94-19-20 R-134a Charge

Publication Date: SEPTEMBER 21, 1994

LIGHT TRUCK: 1994-95 BRONCO, F-150-350 SERIES, F-47

ISSUE: Ford Climate Control Division has increased the refrigerant charge in the subject vehicles from 2 lbs. 1 oz. to 2 lbs. 6 ozs.

ACTION: When service to the A/C system is required, recharge the A/C system with 2 lbs. 6 oz. of R-134a. Make the necessary corrections to the 1994-95 Service Manuals, pages 12-00-35, 12-03A-58 for 1994 and 12-00-39, 12-03A-56 for 1995.

Obtain an Authorized Modifications Decal and list the date, dealer number, and summary of alterations performed. Select a prominent place adjacent to the Vehicle Emission Control Information Decal suitable for installing the Authorized Modifications Decal. Clean the area, install the decal, and cover it with a clear plastic decal shield.

OTHER APPLICABLE ARTICLES: NONE
WARRANTY STATUS: INFORMATION ONLY

'80-96 F-series & Broncos w/R-134a take 7oz of PAG-46.

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TSB 93-8-13 Replacement A/C Vacuum Reservoir

Publication Date: APRIL 14, 1993

LIGHT TRUCK: 1992-93 BRONCO, F-150-350 SERIES

ISSUE: The vacuum tank for the heater or heater/air conditioning controls is sonically welded to the side of the heater or evaporator case. If a vacuum leak occurs at the vacuum tank, a different vacuum tank can be used to make the repair without removing the old vacuum tank.

ACTION: Install a new service vacuum tank. Refer to the following procedure for service details.

SERVICE PROCEDURE
1. In the engine compartment, detach the vacuum hose from the sonically welded vacuum tank on the heater or evaporator case.
2. Attach the replacement vacuum tank (F3TZ-19D848-A) in a conveniently located spot that can be reached by the vacuum hose. Several areas are available:
a. On the old sonically welded tank, drill an appropriate size hole in the old vacuum tank and use a self-tapping screw to attach the new replacement vacuum tank. The replacement vacuum tank (F3TZ-19D848-A) has slots which will accept the screws.
b. Attach the replacement vacuum tank and put on the vacuum hose.
3. If the old tank mount location is not suitable, locate an existing screw on the blower case and put the replacement vacuum tank (F3TZ-19D484-A) with its slotted bracket in a position over the screw.
a. Make sure of the following points:
* There is room for the tank.
* The vacuum hose will reach it.
* The replacement tank can be attached with that screw.
b. If necessary, rework the slot on the replacement vacuum tank so the screw will fit through it.
c. Attach the replacement vacuum tank and put on the vacuum hose.
4. Verify that the system operates properly.

PART NUMBER PART NAME
F3TZ-19D848-A Vacuum Tank

OTHER APPLICABLE ARTICLES: NONE
WARRANTY STATUS: Eligible Under Bumper To Bumper Warranty Coverage

OPERATION DESCRIPTION TIME
930813A Install Replacement Vacuum Tank 0.3 Hr.

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