Generac Power Systems GTV99O User Manual

SECTION 5: CYLINDER
HEAD AND VALVES
Note:
Ma* components
so that
they may be
rcassem-
bled in theh ofiginal
position.
RE\,IOVE
ROCKER ARN,45:
1.
Ljnlockjam
nutsand rcmovetwo
ballstuds
and rocker
arm
assembJiet(see
Figure
5-3).
2. Remove
push
rods
and identify
each.
Note: The
valve
push
rods
arc aluminum,
Matk
push
rods for
identification
to
Nevent
interchanging.
,/
BALL STUD
6tr ,FOCKEB
AR/\,l
,xa;g JAM NU'r
Figure
S-3.
3. Remove head
bolts and cylinder
head
(Figure
5-4).
a. Discard
gasket.
4. Repeat
Steps 1-3 for
other cylinder head.
DISASSEMBTE
CYLINDER
HEADS
I Piace
a shop rag orshort section
of rubberfuelline
under
valves
inside combunion
chamber
to hold valve in
ptace
while
conrpressing sprlng.
2.
lold down valve
spr
ng
retainer
by hand or with
a
vatve
spflng
compressor
(Figure
5-5).
Remove
the following:
a. Valve
spring keepers
b.Valve spring retalner
c. V:lve sprlng
d.lN
and EX valves
3. Remove and discard valve
stem
seals
(Frgure
5,6).
Figurc
5-5. Renoving Retaine9
Figurc 5-4.
henove Cylindet
Head
Figute
,6. Rei/loving
Valve Sten Seals

Generac Power Systems GTV99O Specifications

General

Brand	Generac Power Systems
Model	GTV99O
Category	Engine
Language	English