Kubota M6800S Workshop Manual page 135

M6800 · M6800S · M8200 · M9000, WSM
Piston
1. Turn the flywheel and set a piston to the top dead center.
2. Pull out the piston upward by lightly tapping it from the bottom of
the crankcase with the grip of a hammer.
(When reassembling)
• Before inserting the piston into the cylinder, apply enough engine
oil to the cylinder.
• When inserting the piston into the cylinder, face the mark on the
connecting rod to the injection pump.
IMPORTANT
• Do not change the combination of cylinder and piston.
Make sure of the position of each piston by marking. For
example, mark "1" on the No. 1 position.
• When inserting the piston into the cylinder, place the gap of
the compression ring 1 on the opposite side of the
combustion chamber and stagger the gaps of the
compression ring 2 and oil ring marking a right angle from
the gap of the compression ring 1.
• Carefully insert the pistons using a piston ring compressor
(1). Otherwise, their chrome-plated section may be
scratched, causing trouble inside the liner.
• The Piston is NOT convertible between Engine Serial
Number : below YY0470 and above YY0471.
Engine Serial Number : below YY0470
Part Name
Piston
Engine Serial Number : above YY0471
Part Name
Piston
(1) Piston Ring Compressor
(a) 0.79 rad (45 °)
1-S50
Part Code
V3300-E V3300-TE · V3300-TIE
1C010-21110 1C040-21110
Part Code
V3300-E V3300-TE · V3300-TIE
V3300-E2 V3300-TE2 · V3300-TIE2
1C011-21111 1C041-21111
(A) Top Ring Gap
(B) Second Ring Gap
(C) Oil Ring Gap
(D) Piston Pin Hole
ENGINE
W1058433
KiSC issued 03, 2008 A