wsm M7060 Workshop Manual page 213

M6060, M7060, WSM
Connecting Rod Cap
1. Remove the connecting rod screws (1) from connecting rod cap.
2. Remove the connecting rod caps.
(When reassembling)
• Align the marks (a) with each other. (Face the marks toward the
injection pump.)
• Apply engine oil to the connecting rod screws (1) and lightly
screw it in by hand, then tighten it to the specified torque.
If the connecting rod screw (1) won't be screwed in
smoothly,clean the threads.
If the connecting rod screw (1) is still hard to screw in, replace it.
• When using the existing crank pin metal again, put tally marks
on the crank pin metal and the connecting rod in order to keep
their positioning.
NOTE
• At the time of reassembling the connecting rod caps, use a
combination of the connecting rod screws with the same
specified tightening torque.
Tightening torque Connecting rod screw
(1) Connecting Rod Screw
Piston
1. Completely clean carbon in the cylinders.
2. Turn the flywheel and set a piston to the top dead center.
3. 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 (4) 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 each piston ring like the figure.
• Carefully insert the pistons using a piston ring compressor
(1). Otherwise, their chrome-plated section of piston rings
may be scratched, causing trouble inside the liner.
• When inserting the piston in place, be careful not to get the
molybdenum disulfide coating (3) torn off its skirt. This
coating is useful in minimizing the clearance with the
cylinder liner. Just after the piston pin has been
press-fitted, in particular, the piston is still hot and the
coating is easy to peel off. Wait until the piston cools down.
(1) Piston Ring Compressor
(2) Piston
(3) Molybdenum Disulfide Coating
(4) Mark
(a) 0.79 rad (45 °)
1-S52
ENGINE
69 to 73 N·m
7.0 to 7.5 kgf·m
51 to 54 lbf·ft
(a) Mark
9Y1210828ENS0073US0
(A) Top Ring Gap
(B) Second Ring Gap
(C) Oil Ring Gap
(D) Piston Pin Hole
(E) Injection Pump Side
9Y1210828ENS0074US0
KiSC issued 08, 2013 A