Crankshaft - Kubota WG972-E2 Workshop Manual

WG972-E2, DF972-E2, WSM

(7) Crankshaft

Piston Ring and Connecting Rod
1. Remove the piston rings using a piston ring tool.
2. Remove the piston pin (10), and separate the connecting rod (8)
from the piston (7).
(When reassembling)
• When installing the second compression ring (2), assemble the
rings so that the manufacturer's mark (11) near the gap faces the
top of the piston.
• Apply engine oil to the piston pin.
• When installing the connecting rod to the piston, immerse the
piston in 80 °C (176 °F) oil for 10 to 15 minutes and insert the
piston pin to the piston.
• When installing the connecting rod to the piston, align the mark
(9) on the connecting rod to the plug recess (6).
■
IMPORTANT
• Mark the same number on the connecting rod and the piston
so as not to change the combination.
(1) Top Ring
(2) Second Ring
(3) Side Rail
(4) Spacer
(5) Piston Pin Snap ring
(6) Plug Recess
Flywheel
1. Secure the flywheel to keep it from turning using a flywheel
stopper.
1. Remove all flywheel screws (1) and then remove the flywheel (2).
(When reassembling)
• Align the "1TC" mark (a) on the outer surface of the flywheel
horizontally with the alignment mark (b) on the rear end plate.
Now fit the flywheel in position.
• Apply engine oil to the threads and the undercut surface of the
flywheel screw and fit the screw.
Tightening torque Flywheel screw
(1) Flywheel Screw
(2) Flywheel
S-45
GASOLINE / LPG ENGINE
(7) Piston
(8) Connecting Rod
(9) Mark
(10) Piston Pin
(11) Manufacturer's Mark
W10281670
53.9 to 58.8 N·m
5.5 to 6.0 kgf·m
39.8 to 43.4 ft-lbs
(a) 1TC Mark
(b) Alignment Mark
W1060354
KiSC issued 01, 2006 A