Generac Power Systems GTV99O Service Manual page 59

SECTION 13: ENGINE ASSEMBLY
SECTION CONTENTS
lNsTALL CRANKSHAFr ............__........................_.........
13-1
|NSTALL PISTON AND CONNECTTNG
ROD .................... 13-1
tNsTALL CAMSHAFL............_....._...................____.........
t3-2
tNSTALL CRANKCASE COVER .._.......................__..........
13-2
GENERALASSEtV8LY.................__.................................
t3-3
tNsTA11 8REATHER ......................................................
13-3
|N5TALLFL\1|/HEEL.......................
............13-3
ADJUST tGNtTtON COtL AtR GAP.................................. 13-4
tNSTALL CYLTNDER HEADS ............................................ 13,
ADJU5TVA1VE5............................._..............................
13-
INSTALL CRANKSHAFT
Lubricatemagbearingandlipsof
oilsealwithengineoiland
installcrankshaft.
Figure 13-1. Insta ing Qankhaft
INsTATL PISTON AND CONNECrING ROD
Note: lnstall *t pinon and connecting rcd tiEL
1 - Oil piston ngs, piston skift, and compress rings with Ring
Comprcssor, Figure l3-2.
a. Place piston and ring compressor upside down on bench
with projedions on comprcssor facing up.
b.Tlghten ring compressor evenly until rings are fully com-
pressed.
c. Then loosen ring compressor very slightly so th:t com
pressor can be rotated on piston skirt while holding
connecting rcd, Figure 13-2.
d, Remove connecting rod cap.
Figure 13-2. Conpresting Rings
2. Lub cate cylinder borcs and crankpin and rotate crankhaft
until it is at bottom of stroke.
3. Install #l piston with notch or casting mark towards fty-
wheelside, Figurc 13-3.
a. Push piston down by hand untilconnecting rod is seated
4. Assemble connecting rod cap to rod with match marks
allgned, Figure 13-4.
a. Torque screws to 24.4 Nm (18 ft. lbs.).
FIING
COMPFESSOB
Figure 13-3, lnsElling Piston And Conneding Rod
1 3 - 1