Winnebago 1987-1989 LeSharo Service Manual page 81

ENGINE OVERHAUL
&
REBUILD
REASSEMBLE CYLINDER BLOCK ASSEMBLY
FRONT AND REAR MAIN BEARING SUPPORT SIDE
SEALS (CONT.)
Method 2
Due to matching modifications in engine production,
lateral sealing of the main bearing caps cannot be
ensured with the butyl seals provided in the
gasket/seal kit.
Therefore, described here is an alternate methods of
sealing main bearing caps using Thixo-Caf 4/60
Silicone (50 ml tube). Thixo Silicone and an
application kit are available from our Parts Sales
Department. The applicatoin kit consists of:
• - 5 ml tube of hardener
• - mixing stick
• - 50 ml syringe
• - set mixing/application instructions
IMPORTANT
The product must be injected within
approximately 5 minutes to avoid the mixture
hardening in the syringe.
- Thoroughly clean the surfaces at (A) on the
cylinder block and the main bearing cap using a
cloth dampened with cleaning solvent.
Lightly coat the lower faces of the cylinder block
at (8) with CAF 4/60 THIXO but do not block the
oil retention grooves.
- Attach the cap and tighten to 8.8-9.8 daNm (65-72
Ib./ft.)
- Mix 45 ml of CAF4/60 THIXO with the contents of
the tube of hardener using the stick to blend the
mixture thoroughly.
- Put the mixture in the syringe and inject it into the
main bearing cap grooves.
- Allow the mixture to flow out slightly either side
of the main bearing cap grooves to ensure that
the injected mixture has filled the sealing groove
completely.
83-30
,-
I
r
i
1
r
L
I
I
l
1
I.
L