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MAIN BODY BORE REPAIR
REPAIRING DEEP BODY BORE SCRATCHES BY WELDING AND
POLISHING
If a deep score or scratch (11) (deeper than .006 inch (.15 mm), that cannot be
repaired by grinding is found in the body bore, repair this by welding.
The areas of the bore that are sealed by o-rings can be located by the discoloration (9).
To prevent oil and/or gas leakage, special care must be taken to obtain a smooth finish
with no pinholes, undercut, or uneven finish in the o-ring areas. If you are unsure of
where the o-ring areas are located, measure these areas on the outside of the sleeves
and mark in the body using a permanent marker to show o-ring areas.
IDENTIFY O-RING AREAS
REPAIR PROCEDURE:
1. Carefully grind the score (11) until it is flush with the surface, especially in the o-ring
rest areas, as in area (10).
(10) POLISHED AREA
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