Generac Power Systems GTV99O User Manual

SECTION 5: CYLINOER
HEAD AND VALVES
7. Set
guide plate
in
place
and loosely install rocker arm
assembliet
(ballstud,
rocler
arm and
Jam
nu0.
8. Repeat Step 7 for
other head.
INSTAI.L
CYIINDER HEAD
1- Installcylinder
head with newgasket-
2.
Torque head bolts in sequence shown
to
29.9
Nm
(22
ft.
lbs.)
(Figure
5-16).
3. In5ert
push
rods
into recess in tappets.
Fbute &16.
ADJUST VATVE
CI.EARANCE
1.Set No. 1 cylinder atTDC,
comprcssion stroke.
a.
Adjust rocker
arms and check clearance
(Figure
5-17).
Valve
Cleaance
(cold)
lN and EX 0.0762 mm
(.003').
b.Torquejam nut and
ballstud to 19 Nm
(14ft.
lbs.).
2. Repeatfor No.2
cylinder.
3.Inslallvalve covers with new
gaskets,
Figure 5-18.
a. Torque nuts to 6.8 Nm
(5
ft. lbs.).
REASSEMBIE
1. lnstall cylinderwtappers.
a. Toque M5
scre! 6 to 2.8 Nm
(25
in. lbs).
b.Torque M6 screws to 4.5 Nal(40 in.
lbs).
2. Install spark
plugs.
a.
Torque
to
2l Nm
(15.5
ft.lbs.).
3.
Install
exhaust manifold.
a. Torque scews
to
32.5 Nm
(24
ft. lbs.).
4. Install
blower housing.
a.Torque screws to 4.5 Nm
(40
in. lbt.
5. Install intake manifold with new
gaskets.
a.Torque screws
ro
9 Nm
(14
ft.
lbs.).
b.Assemble
governor
link to carburetor
Figwe ,l8.lntall Valve
Coverc
@"{
nill
@r<
\
/a
TORQUE SEQUENCE
FOF HEADS:
A.B.C-D-E-F
Figurc 5-17, Adjun Valve Cleannces
5-5

Generac Power Systems GTV99O Specifications

General

Brand	Generac Power Systems
Model	GTV99O
Category	Engine
Language	English