Robin America EH72, Service Manual

Page: 38 / 74

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5) MAIN BEARING COVER
(1) Put a oil seal guide onto PTO shaft portion to avoid damaging the main bearing cover oil seal.
(2) Place gasket onto the mating surface of crankcase.
(3) Lubricate oil seal lip portion and bearing surfaces, and install main bearing cover.
Tighten bolts evenly to the specified torque.
6) OIL PUMP and COVER
(1) Apply oil to inner and outer rotors of oil pump
and attach them in position.
(2) Set O-ring in position.
(3) Install oil pump cover with the allow marking
upwards.
Tightening torque
23 - 26 N ・ m
(235 - 265 kgf ・ cm)
(17.3 - 19.5 ft ・ lb.)
O-RING
INNER ROTOR
OUTER ROTOR
" "MARKING
OIL PUMP COVER
Fig. 5-38
7) CYLINDER HEAD
(1) Place new head gasket onto crankcase.
(2) Install #1 and #2 cylinder heads. Tighten bolts
evenly in steps to the specified torque.
Tightening torque
41.2 - 49 N ・ m
(400 - 500 kgf ・ cm)
(29.4 - 36.8 ft ・ lb.)
8) PUSH RODS
(1) Rotate crankshaft to the position in the no lifted condition of tappet.
(2) Be sure to loose the rocker arm adjust screw.
NOTE ;
* Before installing main bearing cover, be sure to check the installation of governor lever
shaft and oil pump filter in the crankcase in position.
* Tap cover with a soft hammer until tacthing the crankcase mating surface, engaging with
governor gear and camshaft gear properly.
* Rotate crankshaft slowly to check for smooth operation and side clearance.
NOTE
;;
Be sure to check dowel pin, and replace with new one if damaged.
1
2 3
4
Tighten the cylinder head bolts in diagonal order.
Cylinder
head bolts
M10 x 65 mm
Flange bolt
: 8 pcs.
Tightning Torque
1
st
step Final step 2
nd
step
25 N ・ m
(255 kgf ・ cm)
(18.4 ft ・ lb.)
45 N ・ m
(459 kgf ・ cm)
(33.2 ft ・ lb.)
35 N ・ m
(357 kgf ・ cm)
(25.8 ft ・ lb.)