12
INSTALLATION MANUAL FOR 490A
Slave Piston Adjusting
Screws (D Lash)
Loosen slave piston adjusting screw locknut and
remove adjusting screw from housing (Fig. 20).
Clean adjusting screw in an approved cleaning
solvent.
Inspect the slave piston adjusting screw (D Lash).
The plunger should protrude from the bottom
of the screw, and move freely (Fig. 21). Be sure
the retaining ring is fully engaged in its groove.
Replace the entire screw assembly any defect is
found.
DO NOT READJUST OR TAMPER WITH THE
ADJUSTING SCREW ASSEMBLY. ENGINE
DAMAGE COULD RESULT.
FIG. 21
FIG. 20
SLIDE PLUNGER
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