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3.5
ENGINE
3
Engine Service Data
KEY - Std: Standard; OS: Oversize; ID: Inner Diameter; OD: Outer Diameter; Mag: Magneto Side;
PTO: Power Take Off.
Cylinder / Piston / Connecting Rod EH50PLE
Cylinder Surface warpage limit (mating with cylinder
head)
.0020” (0.05 mm)
Cylinder bore Std 3.6221-3.6228” (92.00-92.02 mm)
Taper limit .0020” (0.05 mm)
Out of round limit .0020” (0.05 mm)
Piston clearance Std .0006-.0018" (0.015-0.045 mm)
Limit .0024” (0.060 mm)
Boring Limit .020” (.5 mm)
Piston Outer diameter Std 3.6204-3.6215” (91.970-91.985mm)
.0098" (.25 mm) OS 3.6304-3.6310” (92.21-92.23 mm)
.0197" (.50 mm) OS 3.6403-3.6407” (92.46-92.47 mm)
Standard inner diameter of piston pin bore .9055-.9057” (23.0-23.006 mm)
Piston Pin Outer diameter .9053-.9055” (22.994-23.0 mm)
Standard clearance-piston pin to pin bore .0002-.0003” (.004-.008 mm)
Degree of fit
Piston Pin must be a push (by hand) fit at 68
o
F (20
o
Piston Ring Piston Ring Installed
gap
Top ring Std .0079-.0138" (.20-.36 mm)
Limit .039” (1.0 mm)
Second
ring
Std .0079-.0138" (.20-.36 mm)
Limit .039” (1.0 mm)
Oil ring Std .0079-.0276" (0.20-0.70 mm)
Limit .059" (1.5 mm)
Piston Ring Standard clearance -
piston ring to ring
groove
Top ring Std .0016-.0031" (0.040.-080 mm)
Limit .0059" (.15 mm)
Second
ring
Std .0012-.0028" (0.030-0.070 mm)
Limit .0059" (.15 mm)
Connecting
Rod
Connecting rod small end ID .9058- .9063” (23.007 - 23.020 mm)
Connecting rod small end radial
clearance
Std .0003-.0010” (.007-.026 mm)
Limit .0020 (.05 mm)
Connecting rod big end side
clearance
Std .0039-.0256” (.1-.65 mm)
Limit .0315” (.80 mm)
Connecting rod big end radial
clearance
Std .0004-.0015” (.011-.038 mm)
Limit .0020” (.05 mm)
Crankshaft Crankshaft runout limit .0024” (.06 mm)