Caravan V6-181 3.0L VIN 3 FI (1988)
Cylinder Head Gasket: Customer Interest
Cylinder Head Gasket - Coolant Leakage
SUBJECT:
Head Gasket Coolant Leakage, 3.0L Engine
NO.: 09-01-91
GROUP: ENGINE
DATE: Feb. 25, 1991
MODELS:
1987 - 1989
(S/AS) CARAVAN/GRAND CARAVAN/CARAVAN C/V
VOYAGER/GRAND VOYAGER/TOWN & COUNTRY
1988 - 1989
(C/AC) DYNASTY/NEW YORKER
1989
(AA)
SPIRIT/ACCLAIM
SYMPTOM/CONDITION:
Some 1987-1989 vehicles equipped with the 3.0L engine may experience loss of engine coolant from an external cylinder head(s) gasket leak.
A new head gasket, PN MD143540, entered engine production December 1988, beginning with engine serial number MM6619.
NOTE:
THE ENGINE SERIAL NUMBER IS LOCATED ON THE MACHINED SURFACE ON THE RIGHT REAR SIDE OF THE ENGINE
BLOCK.
DIAGNOSIS:
Attach a radiator pressure tester and apply 15 psi pressure. Carefully inspect the engine for coolant leakage. If leakage is present at the cylinder head(s)
to block mating surfaces perform the repair procedure.
If no leakage is evident at the head(s) to block mating surfaces but pressure test indicates leakage, continue the leakage diagnosis as outlined in the
Cooling System section of the appropriate Service Manual and repair as required.
PARTS REQUIRED:
1 - Cylinder Head Gasket Kit
PN MD172539
Gasket Kit Contains
2 - Head Gaskets
PN MD143540
2 - Intake Manifold Gaskets
PN MD157195
2 - Surge Tank Gaskets
PN MD094128
REPAIR PROCEDURE:
This repair involves removing BOTH cylinder heads and replacing the cylinder head gaskets even though the leakage is evident from one bank only.
1.
Drain the cooling system.
2.
Turn the ignition key to the off position and disconnect the battery negative battery cable.
3.
Remove both cylinder heads as outlined in the appropriate Service Manual.
4.
Clean the cylinder heads and block mating surfaces.
5.
Check cylinder head(s) flatness as outlined in the appropriate Service Manual.
6.
Install both cylinder heads as outlined in the appropriate Service Manual.
7.
Fill cooling system as outlined in the appropriate Service Manual.
