Onan CCK Series - Page 65

MAINTENANCE
ND REPAIR
59
NOTE-USE A STANDARD
NOTE: SEE VALVE TAPPET
'I~
AUTOMOT IVE TYPE ,
WRENCH TO ADJ
r.
TH~ •.•. P ..• , .•... c •... : .. :r
VALVE
INSE
~~
VijVE
A!3&-
LEARANCES IN TEX.T.
I
VALVE SPRING
RETAINER WASHER
rtNTAKE VALVE ONl.Y)
VE SPRING
SEAT
- Valve
Grinding -
only
eno~gh to assure proper seating.
Remove all grinding' dust from engine parts and install each valve
in its-proper location. Check each valve for a tight seat, using an air
pressure type testing tool. If such a tool is not available; make pen-
cil marks at intervals across the valve face and observe if the marks
rub off uniformly when the valve is rotated part of a turn against the
seat.
Lightly oil the valve stems and reassemble aU parts removed. Adjust
the valve clearance.
The positive type exhaust valve rotocaps serve to prolong valve life and
need
for valve service. When functioning properly the exhaust valve is,
rotated a fraction of a turn each time it opens. While at open position
the valve can be rotated freely but in only one direction. Try it. If
I