Load Leveling Compressor - Air Dryer Case Cap Seperates

88ford1

SUSPENSION - REAR - LOAD LEVELING COMPRESSOR AIR DRYER CASE CAP SEPARATION - VEHICLES IN LIMOUSINE SERVICE

Article No. 88-1-10

LINCOLN-MERCURY: 1987-88 LINCOLN TOWN CAR

ISSUE: The load leveling compressor assembly air dryer case cap may separate from the dryer case because of an overloading condition. If the limousine manufacturers use the air shock absorber load leveling system to support the added vehicle curb weight instead of increasing the rear coil spring capacity, the overload results in air pressure that exceeds the design capacity of the load leveling system.

ACTION: To correct this, install a new air compressor dryer assembly and perform the following diagnostic procedure to determine if heavier rear coil springs are required.

1. Install a new air compressor dryer assembly (E6AZ-5346-A). Refer to the appropriate Car Shop Manual, Volume A, Section 14-37.

2. Perform a residual air check on the vehicle. Refer to the Car Shop Manual, Section 14-37-14.

NOTE: The specification is 8-24 psi (55-165 kPa).

3. If the system air pressure is greater than 24 psi (165 kPa), the limousine rear coil springs are not able to support the vehicle's curb weight.

NOTE: Inform the limousine manufacturer that heavier rear coil springs capable of carrying the limousine's curb weight must be installed to allow the load leveling system to operate within the system air pressure specification.

4. If the system air pressure is within the specified 8-24 psi (55-165 kPa), perform the system diagnosis and operation check as outlined in the Car Shop Manual, Volume A, Section 14-37-13. Repair as required.

PART NUMBER PART NAME CLASS

E6AZ-5346-A Air Compressor Dryer
Assembly

OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: "INFORMATION ONLY"