H U D S O N E I G H T
A D J U S T M E N T
Tappets
Before adjusting tappets see that the tappet clamp cap
screw "C" is tight. Adjust tappet by loosening lock nut
"B" and turning adjusting screw "A." Lock adjustment
by tightening
lock nut "B" while holding screw "A."
Measure clearance between adjusting screw and end
of valve stem with a feeler gauge as shown at "D" in the
illustration. This measurement should be made while
the engine is at its normal operating temperature.
Adjust exhaust valve tappets to .006" and intake tappets to .004" clearance. Counting from the
front the exhaust tappets are 1-4-5-8-9-12-13-16 and the intake tappets are 2-3-6-7-10-11-14-15.
Always adjust tappets after grinding valves.
Timing Chain
The timing chain should be inspected at the expiration
of the first 1500 miles and at intervals of 5000 miles
there-after.
A to and fro movement of approximately 1/8" on the
circumference of the coupling "A" (after the slack around
the coupling bolt is taken up) should be maintained.
To adjust, loosen retaining bolts "B." The inside top bolt
and the bottom bolt (not shown) pass through the notches
in the eccentric, necessitating their removal. Insert special
tool "C" in notch and pull toward you until only the
required movement of the coupling is present. If trouble is
experienced in replacing the bolts, back off the adjustment
slightly, allowing them to slide into place:
One-half pint of motor oil should be introduced through the pipe plug opening "D" whenever
the distributor support housing has been removed.
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