7-25
Chapter 7 ASSEMBLY OF BASIC ENGINE
4.12 Flywheel - Install
(1) Check the mounting surfaces of flywheel and crank-
shaft to make sure that they are free from any foreign
material or damage.
(2) Hitch a sling to the flywheel.
(3) Install the flywheel by aligning its hole with dowel pin
on crankshaft.
(4) Apply engine oil to the bolt threads and bolt seat sur-
faces, then tighten the bolts to the specified torque.
Flywheel - Install
4.13 Governor Drive - Install
(Oil pressure governor spec)
(1) Install the O-ring to governor drive.
(2) Install the governor drive to rear plate.
(3) Tighten the bolts to the specified torque.
Governor Drive - Install
4.14 Flywheel Face and Radial Runout - Measure
Measure the face and radial runouts of the flywheel.
If the measured value extremely deviates from the standard,
check the assembling condition such as loose bolt or foreign
material collection on mounting faces.
Flywheel Face and Radial Runout - Measure
4.15 Pickup - Install
(1) Turn the crankshaft to move the ring gear teeth top to
the center line of pickup installing hole.
(2) Insert the pickup into the hole slowly and carefully by
hand.
(3) When the tip of pickup contacts with the ring gear tooth
top, loosen the pickup to adjust the clearance to stan-
dard value.
(4) Fix the pickup with lock nut.
Pickup - Install
Be careful not to drop or bump the flywheel. It will
result in personnel injury as well as damage of the fly-
wheel.
539 ± 27 N·m
{55 ± 2.75 kgf·m}
[398 ± 20 lbf·ft]
[Wet]
108 ± 5.4 N·m
{11 ± 0.55 kgf·m}
[80 ± 4.0 lbf·ft]
Item Standard value
Face runout (reference) 0.285 mm [0.0112 in.] or less
Radial runout (reference) 0.127 mm [0.0050 in.] or less
Face runout
measuring plane
Radial runout
measuring plane
1.4 mm
[0.055 in.]
Lock nut
Timing gear case
Ring gear
One complete
reverse turn
after bringing
into contact
5/8-18UNF
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