Polaris A11RD50AA User Manual

ENGINE
3.4
ENGINE SERVICE DATA
Cylinder / Piston / Connecting Rod EH42PLE EH50PLE
Cylinder
Surface warpage limit (mating with cylinder head) .0020² (.05 mm) .0020² (.05 mm)
y
Cylinder bore Std 3.4606-3.614² (87.900-87.920 mm) 3.6221-3.6228² (92.00-92.02 mm)
Taper limit .0020² (.050 mm) .0020² (.050 mm)
Out of round limit .0020² (.050 mm) .0020² (.050 mm)
Piston clearance
Std .0006-.0018² (.015-.045 mm) .0006-.0018² (.015-.045 mm)
Limit .0024² (.060 mm) .0024² (.060 mm)
Boring limit .020² (.5 mm) .020² (.5 mm)
Piston Outer diameter
Std 3.4596-3.4600² (87.875-87.885 mm) 3.6204-3.6215² (91.970-91.985 mm)
.0098² (.25 mm) OS 3.4695-3.4699² (88.125-88.135 mm) 3.6304-3.6310² (92.21-92.23 mm)
.0197² (.50 mm) OS 3.4793-3.4797² (88.375-88.385 mm) 3.6403-3.6407² (92.46-92.47 mm)
Standard inner diameter of piston pin bore .9055-.9057² (23.0-23.006 mm) .9055-.9057² (23.0-23.006 mm)
Piston Pin
Outer diameter .9053-.9055² (22.994-23.0 mm) .9053-.9055² (22.994-23.0 mm)
Standard clearance-piston pin to pin bore .0002-.0003² (.004-.008 mm) .0002-.0003² (.004-.008 mm)
Degree of fit Piston pin must be a push (by hand) fit at 68° F(20° C)
Piston Ring Piston ring installed gap To p r ing
Std .0079-.0138² (.20-.36 mm) .0079-.0138² (.20-.36 mm)
g
g
g
p
p
g
Limit .039² (1.0 mm) .039² (1.0 mm)
Second
i
Std .0079-.0138² (.20-.36 mm) .0079-.0138² (.20-.36 mm)
ring
Limit .039² (1.0 mm) .039² (1.0 mm)
Oil ring
Std .0079-.0276² (.20-.70 mm) .0079-.0276² (.20-.70 mm)
g
Limit .059² (1.5 mm) .059² (1.5 mm)
Piston Ring Standard clearance -
i
i
i
Top ri n g
Std .0016-.0031² (.040-.080 mm) .0016-.0031² (.040-.080 mm)
g
pistonringtoringgroove
p
g
Limit .0059² (.15 mm) .0059² (.15 mm)
Second
i
Std .0012-.0028² (.030-.070 mm) .0012-.0028² (.030-.070 mm)
ring
Limit .0059² (.15 mm) .0059² (.15 mm)
Connecting
R
d
Connecting rod small end ID .9058-.9063² (23.007-23.020 mm) .9058-.9063² (23.007-23.020 mm)
g
Rod
Connecting rod small end radial clear-
Std .0003-.0010² (.007-.026 mm) .0003-.0010² (.007-.026 mm)
g
ance
Limit .0020² (.05 mm) .0020² (.05 mm)
Connecting rod big end side clearance
Std .0039-.0256² (.1-.65 mm) .0039-.0256² (.1-.65 mm)
g
g
Limit .0315² (.80 mm) .0315² (.80 mm)
Connecting rod big end radial clear-
Std .0004-.0015² (.01 1-.038 mm) .0004-.0015² (.011-.038 mm)
g
g
ance
Limit .0020² (.05 mm) .0020² (.05 mm)
Crankshaft Crankshaft runout limit .0024² (.06 mm) .0024² (.06 mm)
KEY - Std: Standard; OS: Oversize; ID: Inner Diameter;
OD: Outer Diameter; Mag: Magneto Side; PT O: Power
Take Off Side

Polaris A11RD50AA Specifications

General

Brand	Polaris
Model	A11RD50AA
Category	Offroad Vehicle
Language	English