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C
ENGINE MEASUREMENTS
Page C-1
Engine Shop Rebuild and Parts Manual
ENGINE MEASUREMENTS AND
SPECIFICATIONS
Tool List
Qty. Required
Calipers, dial ............................................................... 1
Gauge, depth .............................................................. 1
Gauge Set, feeler ........................................................ 1
Gauge Set, telescoping............................................... 1
Micrometer, 1" ............................................................. 1
Micrometer, 2" ............................................................. 1
Micrometer, 3" ............................................................. 1
Surface plate ............................................................... 1
All engine parts must be thoroughly
cleaned, and free of all dirt, oil, grease,
carbon deposits or residue of any kind before beginning this
section. It is especially important that your work area be clean
and well organized while performing the operations described in
this section.
In some cases, time may be saved by setting
measuring instruments at limit specifications
and using them as “go-no-go” fixtures. Check preset instrument
fit in bores, on shafts, etc. to determine part acceptability. We
recommend that parts bound to be acceptable but near limits be
replaced if the engine will see high usage.
Check micrometers for proper calibration
before beginning the operations described in
this section.
Using Telescoping Gauges and Hole
Gauges
(See Fig. C-1 “Using Telescoping and Hole Gauges” on page C-1)
Telescoping gauges and hole gauges are “transfer-type”
measuring instruments. They are not calibrated and are
used to record a distance which is then transferred to a
micrometer for measurement.
Position the gauge in the hole or bore and “set” the tele-
scoping arms or ball to its true diameter. Make sure that
the handle of the gauge is in line with the centerline of
the hole or bore.
Lock and remove the gauge. Measure its setting with a
micrometer.
Check flatness of Crankcase, End Cover
and Cylinder Head
(See Fig. C-1 “Using Telescoping and Hole Gauges” on page C-1)
If flatness of a surface is found to be
out of tolerance, the part must be
machined or replaced. No more than .010 may be machined from
a surface. If warpage is in excess of .004, the part must be
replaced.
A. Place the crankcase on a surface plate with the mat-
ing surface for the end cover down. Be sure that all
gasket material and dowel pins are removed.
B. Use a .004 feeler gauge to determine if surface is
within tolerance.
1. Try inserting the feeler gauge into all visible gaps
between the crankcase and surface plate. If the
gauge can be inserted, the surface is out of toler-
ance and must be machined or replaced. No more
than .010 may be machined from the surface. If
warpage is in excess of .004, the crankcase
must be replaced.
C. Turn the crankcase so that the mating surface for the
cylinder head rests on the surface plate and check for
flatness in the same manner.
D. Place the crankcase end cover on the surface plate
with the gasket surface down, and check for flatness.
E. Place the cylinder head on the surface plate with the
crankcase mating surface down, and check for flat-
ness.
Fig. C-1 Using Telescoping and Hole Gauges
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Страница 7: ...Page vi TABLE OF CONTENTS Engine Shop Rebuild and Parts Manual Notes ...
Страница 9: ...viii HOW TO USE THIS MANUAL Engine Shop Rebuild and Parts Manual ...
Страница 11: ...ENGINE DISASSEMBLY Page A ii Repair and Service Manual Notes ...
Страница 19: ...ENGINE DISASSEMBLY Page B ii Repair and Service Manual Notes ...
Страница 25: ...ENGINE DISASSEMBLY Page B 6 Engine Shop Rebuild and Parts Manual Fig B 3 Crankshaft 1 2 3 4 5 6 A Seal puller ...
Страница 29: ...ENGINE DISASSEMBLY Page B 10 Engine Shop Rebuild and Parts Manual Notes ...
Страница 31: ...ENGINE MEASUREMENTS Page C ii Engine Shop Rebuild and Parts Manual Notes ...
Страница 45: ...ENGINE MEASUREMENTS Page C 14 Engine Shop Rebuild and Parts Manual Notes ...
Страница 47: ...ENGINE REASSEMBLY Page D ii Engine Shop Rebuild and Parts Manual Notes ...
Страница 63: ...ENGINE REASSEMBLY Page D 16 Engine Shop Rebuild and Parts Manual Notes ...
Страница 65: ...ENGINE REASSEMBLY Page E ii Engine Shop Rebuild and Parts Manual Notes ...
Страница 79: ...ENGINE REASSEMBLY Page E 14 Engine Shop Rebuild and Parts Manual Fig E 9 Carburetor 5 7 6 1 4 3 2 ...
Страница 80: ...F Page F 1 ILLUSTRATED PARTS BREAKDOWN Engine Shop Rebuild and Parts Manual Illustrated Parts Breakdown ...
Страница 95: ...LIMITED WARRANTY Page G ii Engine Shop Rebuild and Parts Manual Notes ...