B Series Truck L4-2000 1998cc (1986)
Cylinder Head Gasket: Customer Interest
Cylinder Head Gasket - Modified
Category 1
019/86 3/31/86
1985 & 1986 626, 1986 B2000
SUBJECT
Cylinder Head Gasket
DESCRIPTION
To improve the sealing ability of the head gasket, the material was changed during February production. (Service Bulletin, Cat.1,012/85)
On vehicles produced after the above mentioned modification, a problem of water leakage from the cylinder head gasket may exist due to a cracking of
the gasket around the water passage as shown below.
On the production line two types of gaskets were used without distinction (Type A and B). So far, reports indicate that the problem is only with the type
A gasket. As a temporary measure, use of this gasket has been discontinued as of January 27, 1986 production.
The two gaskets can be distinguished as shown below.
CAUTION:
The head gaskets supplied as service parts were all type A. To prevent any further problems, the type B gasket will be supplied from now on. When
replacing a head gasket, you must use the type B gasket.
VIN OF PRODUCTION CHANGE
