Technical Instructions

SAFETY RECALL 88S99 TECHNICAL INSTRUCTIONS

Attachment III

TECHNICAL INSTRUCTIONS:

Inspections:

^ Underbody - All Vehicles

1. Inspect the underbody and exhaust system for missing, loose or mispositioned heat-shielding parts (Refer to Safety Recall 87M53 instructions).

If you discover any conditions as a result of this inspection that requires modification, please contact the Special Toll-Free Econoline/Ambulance Hotline, 1-800-445-1571, for authorization. Contact your District Office if the Hotline is not available.

^ Mufflers - All Vehicles

2. Refer to Attachment III, Exhibit 1. Remove the exhaust system muffler heat shields.

3. Inspect the muffler per the instructions contained in Attachment III, Exhibit 1.

^ Replace unacceptable mufflers and attaching parts at the OWNERS EXPENSE ON:

i) 1983 through 1987-model 7.5L single-thermactor engine equipped vehicles;
ii) 1985 through 1987-model, 5.8L 4V H.D. engine equipped vehicles.

^ Replace any mufflers that are not Ford-sourced aluminized stainless steel and attaching parts at FORD EXPENSE on 1985 through 1987-model, 7.5L dual thermactor engine equipped vehicles.

^ Heater and Bypass Hose Replacement:

4. Refer to Attachment III, Exhibit 2. Replace the engine compartment heater and engine bypass hoses as shown on the referenced attachment. Note: The 5.8L 4V H.D. engines require a formed bypass hose. This is not in the heater hose/bypass parts kit. Order this hose separately.

5. Pressure test the cooling system and replace existing radiator cap.

NOTE: Owners will be instructed to retorque hose clamps to 2.5-3.0 N-m (22-26 in.lbs.) when coolant leakage is observed.



MODIFICATION DECAL: Prepare an "Authorized Modifications" decal (Form FPS-8262) as shown below. Affix the decal to a flat clean surface on the radiator support. (Order the "Authorized Modifications" decal on your Weekly Stock Order Pad.)