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C-30HD — PARTS & OPERATION MANUAL — REV. #4 (03/06/01) — PAGE 89
C-30HD — SERVICE INFORMATION RETURN SPRING ADJUSTMENT PROCEDURE
Do not tighten 3/4” bolt completely so that rod end will
be free to move.
The above return spring is installed to eliminate shock
and stress between the cam roller and the cam weldment
when the pump is in operation. If spring EM14333 is
removed or replaced for any reason, maintain the backing
plate dimension as shown to produce proper pre-loading
of the spring for a smooth performance.