Kohler RD 441

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Workshop Manual KD 441_cod. 1.5302.865_2
nd
ed_ rev. 01.
74
5
77
76
75
A B
C
R
R
1
C
Connecting rod alignement
Useadialgaugeasshowninthegure.
Check that axes are aligned using the piston pin; axial mis alignment
A = 0.015; limit 0.03 mm.
If the difference is greater, the connecting rod is not aligned, and it
must be replaced with a new one.
Crankshaft, connection radius
Caution – Warning
When the crankpin and main journal are ground, values R and R
1
must be obtained again to prevent the drive shaft from breaking.
Radius R that joins the crankpin to the supports is 3.3÷3.7 mm.
Radius R
1
that joins the main journal to the timing gear is 1.5 mm.
Crankshaft, lubrication ducts, bore thread on ywheel side and
p.t.o.
Remove plugs C and check that the lubrication duct is perfectly clean.
Close with a new plug checking for proper sealing.
A = M14x1.5 (turn counterclockwise)
B = M8x1.25
Crankshaft, journal/crankpin diameter check, timing cover bea-
ring internal diameters and crankshaft and big end bearing sup-
port
Use an outside micrometer for the journal and an inside dial gauge for
the timing cover, crankshaft and big end bearings.
Overhauls and checking