Explorer 2WD V6-245 4.0L SOHC VIN E EFI (1997)
Engine Block Heater: Customer Interest
Engine Block Heater - Coolant Leak
Article No.
97-17-22
08/18/97
COOLING SYSTEM - COOLANT LEAKING FROM
ENGINE BLOCK HEATER - VEHICLES WITH 4.0L
ENGINE
LIGHT TRUCK:
1995-97 AEROSTAR, EXPLORER, RANGER
ISSUE:
The engine block heater may leak coolant on some vehicles. This may be caused by poor seating of the engine block heater in the engine block.
ACTION:
Install a new engine block heater containing a more robust attaching feature which should reduce the possibility of coolant leaking. Refer to the
following Service Procedure for details.
SERVICE PROCEDURE
1.
Remove heater element from engine block.
2.
Inspect and clean the inside diameter of the core hole, removing any paint or sealer from the machined surface.
3.
Examine outer diameter of the core hole and remove any burrs or rough spots to avoid possible damage to block heater 0-ring.
NOTE:
DO NOT USE PETROLEUM BASED LUBRICANT. DO NOT USE SEALER OF ANY TYPE ON MATING SURFACES BETWEEN HEATER
AND CORE HOLE.
4.
Coat the 0-ring and core hole with anti-freeze.
NOTE:
DO NOT ALLOW THE HEATER TO SPIN DURING ASSEMBLY.
5.
Insert the new heater element into the core hole. Push the heater firmly against the engine block wall with the connector in the 12 o'clock position.
Torque the capscrew clockwise to 3.7 +/- 0.6 N.m (32.7 +/- 5 lb-in). Refer to Figure 1:
Figure 1, Item #
Description