Assembling Piston Assembly - Kubota D1803-CR-E4 Workshop Manual

4. ENGINE
NOTE
• Do not use an impact wrench. Serious damage
will occur.
Tools required
• Flywheel stopper
• Flywheel guide screw
1. Set the flywheel guide screw (2).
2. Install the flywheel (1).
3. Attach the flywheel stopper and tighten to the
specified torque.
NOTE
• Apply engine oil to the flywheel screws.
• Check that there are no metal particles that
remain on the flywheel mounting surfaces.
• The flywheel and the crankshaft fit together
in just one position. Make sure they are
securely fit and tighten the screws.
Tightening tor-
Flywheel screw
que
(1) Flywheel
RELATED PAGE
4.30 Measuring angular deviation between crankshaft
T.D.C. and crankshaft position sensor detected T.D.C.
on page 4-112

6.9 Assembling piston assembly

CAUTION
• The end faces of the oil ring are plated with
hard chrome. When you install the piston into
the cylinder, do not give a damage to the
cylinder by the oil ring. If the ring's planting is
scratched, it may get stuck on the cylinder wall,
causing serious damage.
4-140
98.10 to 107.9 N⋅m
10.01 to 11.00 kgf⋅m
72.36 to 79.58 lbf⋅ft
(2) Flywheel guide screw
D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4
IMPORTANT
• Put a mark on the connecting rod and the
piston with the same number to keep the same
combination.
1. Put the piston fully in 80 ℃ (176 ℉) oil for 10 to 15
minutes.
2. Install the piston pin (4) and the connecting rod (2)
to the piston (1).
NOTE
• Apply engine oil to the piston pin.
• Align the mark [FW] (5) on the piston to the
flywheel side and the connecting rod mark
(3) to the supply pump side.
(1) Piston
(2) Connecting rod
(3) Mark
SERVICING
6. Assembling
(4) Piston pin
(5) Mark [FW]
KiSC issued 12, 2018 A