Generac Power Systems GTV99O - Section 11: Crankshaft & Camshaft; Checking Crankshaft; Checking Camshaft

SECTION
11:
CRANKSHAFT
& cAMSHAFI
SEcrION
CONTENTS
CHECKING
CRANKSHAFI...
CHECKING
CAMSHAFT......
.....
CHECK]NG
CRANKSHAFI:
PAGE
I1,1
11-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,
Mag
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
TIMING
LOBES
Figwe
11-2.
Che*ing
Canshalt
otL
GALLERY
CFANKPIN
f iqurc
| 1
-1.
Che.k ing
Qankshalt
Camshaft
Reiect
Size
Crankshaft
Reject
Sizes
Crankpln
PTO
Mag.
Joumal
journal
I1-1