3-16. ENGINE/TRANSMISSION HOUSING DAMAGE
Cracks or small holes in engine block or transmission housings. In most cases the power
pack will need to be removed so that the crack will be accessible. A point to remember
is that welding does not have to meet specifications, only hold temporarily. Some
general procedures for crack repair, in order of preference are: welding, brazing, epoxy
or hard fillers, and soft adhesive/fillers. Use of the below procedures are dependent
upon the part to be repaired.
q 3 soldiers
q 3 to 6 hours
q Lift capability
q Arc welding equipment
q Metal filler/sealer
q Repair of small cracks not causing large amounts of fluid loss may be deferred.
1. The engine block is cast iron and may be welded if care is taken not to warp
a. (Oil soaked, cast iron defects), MIL-E-13191, Type CuSn-A, Type CuSn-C or
b. Use rod AST-MA 398-65T, Type ENICA ENIFE-C 1 (Engine blocks - water
jacket), or equivalent.
Cracks into the cooling jacket can be repaired using an epoxy or hardening sealer.
Low stress areas such as the air box, may use almost any type of filler/adhesive.
4. The transmission housing is cast aluminum and may be welded if care is taken. Use
type 5356, C1, MIL-E-16053 welding wire equivalent. Any of the above
fillers/adhesives may be used to repair cracks or holes.
5. The steel oil pans of the engine and transmission can be welded. Any fiberglass kit
may be used.