Onan 12.0MDJF-53CR User Manual

DIMENSIONS AND CLEARANCES
All clearances given at room temperature of 70
0
F.
All dimensions in inches unless otherwi se specified.
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CAMSHAFT
Bearing journal Diameter, Front
Bearing journal Diameter, Rear
Bearing Clearance Limit
End Play, Camshaft (in back position)
Cam Tappet Hole Diameter.
Cam Tappet Diameter ..••....•
CONNECTING RODS
Large Bearing Diameter (I.D.) ..... .
Small
Bushing Diameter (LD.) ..... .
Clearance, Large Bearing to Crankshaft
CYLINDER
Cylinder Bpre ..... .
Cylinder
Diameter Limits
CRANKSHAFT,
Main Bearing Journal Diameter ...........•.
Crankshaft Main Bearing Clearance (Original Equipment)
Connecting Rod journal Diameter
End Play, Crankshaft ..... . . . • • . . . . . . • •
PISTON (Measure 90° to Pin)
Piston Clearance to Cylinder Wall below Oil Ring Groove
Piston Pin Hole Diameter
Ring Groove Width, Top
Ring Groove Width, 2nd
Ring Groove Width, 3rd
Ring Groove Width, 4th
PISTON PIN
Length •..
Diameter •.
Piston Clearance
Connecting Rod Bushing Clearance
PISTON RINGS
Ring Type
Top.
2nd .•.
3rd .••
Ring Width
Top '.
2nd
3,'d .
Minimum
Maximum
2.2500
2.2505
1.1875
1.1880
.0012
.0037
.007
.039
.8755
.8765
.8730
.8725
2.0615
2.0630
0.9903
0.9906
.001
.0033
3-1/2
3.4995
3.5005
2.2427
2.2435
.0030
.0043
2.0597
2.0605
.010
.015
.0055
.0075
.99005
.99025
.097
.098
.0965
.0975
. 0965
.0975 .
.1895
.1880
3.003
2.988
.9899
.9901
Thumb Push Fit
.0002 .0007
Compression
Compress ion
Oil Scraper & Compression
.0925
.0935
.0925
.0935
.0925
.0935
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5

Onan 12.0MDJF-53CR Specifications

General

Brand	Onan
Model	12.0MDJF-53CR
Category	Portable Generator
Language	English