Disassembling Piston Assembly; Removing Flywheel - Kubota D1803-CR-E4 Workshop Manual

4. ENGINE
1. Remove the top ring (1) and second ring (2) with a
piston ring pliers.
(1) Top ring
2. Remove the oil ring (3) with a piston ring pliers and
expander (4).
(3) Oil ring

5.36 Disassembling piston assembly

1. Remove the piston pin snap ring (1) from the piston
(2).
2. Remove the piston pin (4) to disconnect the
connecting rod (3) from the piston (2).
IMPORTANT
• Put a mark on the connecting rod (3) and the
piston (2) with the same number to keep the
same combination.
NOTE
• If do not remove the piston pin (4) easily, put
the piston fully in 80 ℃ (176 ℉) oil for 10 to
15 minutes.
4-130
(2) Second ring
(4) Expander
D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4
(1) Piston pin snap ring
(2) Piston
(3) Connecting rod

5.37 Removing flywheel

IMPORTANT
• The flywheel is very heavy, so securely hold the
flywheel when removing.
NOTE
• Do not use an impact wrench. Serious damage
will occur.
Tools required
• Flywheel stopper
• Flywheel guide screw
1. Attach the flywheel stopper (1) to the flywheel.
2. Remove the flywheel screws (2).
(1) Flywheel stopper
3. Set the flywheel guide screw (4).
SERVICING
5. Disassembling
(4) Piston pin
(2) Flywheel screw
KiSC issued 12, 2018 A