Cylinder Head - Coolant Leak

88ford31

Article No. 88-26-10

^ COOLING SYSTEM - 6.9L AND 7.3L DIESEL ENGINE - COOLANT LEAK FROM CYLINDER HEAD

^ CYLINDER HEAD - 6.9L AND 7.3L DIESEL ENGINE - COOLANT LEAK

LIGHT TRUCK: 1983-89 E & F-SERIES


ISSUE: Coolant leaks on 6.9L and 7.3L diesel engines may be caused by a loose or improperly seated water passage steel seal ball in the cylinder head.

FIGURE 9:

ACTION: Install a new steel seal ball in the cylinder head water passage. Refer to the following procedure for installation details, Figure 9.

FIGURE 10:

REMOVAL PROCEDURE

1. Remove the cylinder head from the truck. Refer to the appropriate model year Light Truck Shop Manual, Volume B, Section 21 for service details, 2. Make a tool to remove the steel seal ball as follows:

a. Obtain a 1/4" allen wrench and grind or cut the "J" bend so 3/4" sticks up, Figure 10.

b. Weld a piece of bar stock to the allen wrench to form a "tee" handle, Figure 10.

FIGURE 11:

3. Insert the "J" bend of the tool into the hole of the cylinder head where the steel seal ball is housed, Figure 11.

4. Apply downward pressure to the "tee" handle to remove the steel seal ball, Figure 11.

FIGURE 12:

INSTALLATION PROCEDURE

1. Obtain a new steel seal ball, E3TZ-6026-F, that is 13/32" (.406") in diameter.

CAUTION: DO NOT INSTALL A STEEL SEAL BALL THAT IS LARGER THAN 13/32" (.406") IN DIAMETER. A LARGER BALL WILL CAUSE THE CYLINDER HEAD TO CRACK.

2. Position the new steel seal ball over the hole of the cylinder head, Figure 12.

3. Apply Ford sealer, E0AZ-19554-AA on the new steel seal ball, Figure 12.

4. Using a hammer and a punch, drive the steel seal ball into the hole of the cylinder head until it is seated, Figure 12.

5. Reinstall the cylinder head.

PART NUMBER PART NAME CLASS

E3TZ-6026-F Steel Ball Seal - C
Package of 8
EOAZ-19554-AA Sealer B

OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: Eligible Under Basic Warranty Coverage And Powertrain Coverage
OPERATION: 882610A - R.H. Head
TIME: 7.3 Hrs. - F-Series
9.6 Hrs. - Econoline
OPERATION: 882610B - L.H. Head
TIME: 6.7 Hrs. - F-Series
8.8 Hrs. - Econoline
OPERATION: 882610C - Both Heads
TIME: 10.4 Hrs. - F-Series
12.8 Hrs. - Econoline
OPERATION: 882610D - Fabricate Tool
TIME: 0.4 Hr.
DLR. CODING: Basic Part No. 6049
Condition Code: 48
OASIS CODES: 4300, 4301