Generac Power Systems GTV99O Service Manual page 53

SECTION 11: CRANKSHAFT
& cAMSHAFI
SEcrION CONTENTS
C H E C K I N G C R A N K S H A F I . . .
C H E C K I N G
C A M S H A F T . . . . . .
. . . . .
CHECK]NG CRANKSHAFI:
PAGE
I 1 , 1
1 1 - l
CHECKING
CAIISHAFT:
hspect gear teeth. lobes and journals for wear and nicks,
Figure 11-2. Camshaft journa I and lobe reject sizes are shown
below Replace cam gear if not to specification.
Inspect crankshaft threads, key\,vays and lming gear for
damage orwear lf threads, keyways ortiming gear are dam,
aged orworn, replace crankshaft. C h€ck journats for scoring.
Ifjournals are scored, replace crankshaft. Check journa s for
wear see crankshafr rejedt sizes,
M a g Intake
!obes
Exhaust
4.745"
o.1a4'
1.221'
1.221.
(17.93 nrm) (19.93 mm) (31.02 mm)
(31.02 mm)
ALL 1.648'
'|.534"
I 490'
(a1.8s mm)
(37.85 mm)
(38.96 mrn)
FLYWHEEL
KEY
PTO
JOUFNAL
T I M I N G
LOBES
Figwe 11-2. Che*ing Canshalt
o t L
GALLERY
CFANKPIN
f iqurc | 1 -1. Che.k ing Qankshalt
Camshaft Reiect Size
Crankshaft Reject Sizes
Crankpln
PTO
Mag.
Joumal
journal
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