Section III. TORQUE SPECIFICATIONS

TM 10-3930-632-34

Engine Part

Point of Measurement

Wear

Limit

Connecting Rods .....................................

Bush. Hole Dia ...........................................................

7632/.7622

Brg. Hole Dia..............................................................

1.6245/1.6240

Brg. Thickness ...........................................................

0617/.0614

Wear Limits-Min. Thk. ................................................

.0609

Dia.-Crank Pin............................................................

1.500-1.499

Wear Limits-Min. Dia. ................................................

1.498

Clearance Limits .......................................................

.0006/.0027

Desired Clearance .....................................................

.0015

Wear Limits-Max. C1 ................................................

.0037

Side Play ...................................................................

.0105/.006

Desired Side Play ......................................................

0065

Main Bearings .........................................

Dia of Brg Bore in Block ............................................

1.8747/1.8740

Brg. Thickness ...........................................................

.0625/.0622

Wear Limits-Min. Thk .................................................

.0617

Dia. of Main Brg. Jr. ...................................................

1.7485/1.7475

Wear Limits-Min. Dia. ................................................

1.7465

Clearance Limits ........................................................

.0005/.0028

Desired Clearance .....................................................

.0015

C/S End Play..............................................................

003/.008

Piston Pin.................................................

Length ........................................................................

2.7553/2.7543

Diameter ....................................................................

7085/.7083

Wear Limits-Min. Dia. ................................................

.7080

Desired Fit . ...............................................................

Light Push

Bush. Hole Dia.-Fin....................................................

.7089/.7087

Wear Limits-Max. Dia ................................................

.7099

Pin Cl. in Bushing ......................................................

.0006/.0002

Desired Pin Fit ...........................................................

.0004

Pistons .....................................................

Cylinder Dia. ..............................................................

3.1875/3.1895

Wear Limits- Cyl. Bore ................................................

.008

Piston Pin Hole Dia. ...................................................

.7086/.7084

Ring Groove Width-#1 ..............................................

.0955/.0945

Max. Wear Limit Width ..............................................

.0975

Ring Groove Width-#2 ...............................................

.0955/.094

#3 . ...........................................

251/.250

Max. Wear Limit Width-12 .........................................

.0975

#3 ...........................................

.253

Piston Fit-Feeler Gage ..............................................

.002

Lbs. Pull ....................................................................

5-10#

Piston Rings.............................................

Ring Width-#1 ............................................................

0935/.0925

Wear Limits-Min. Width .............................................

.0905

Ring Width-

#2 ...........................................

.0935/.0925

#2 ...........................................

.249/.2485

Wear Limits-Min. Width-#2 ........................................

.0905

#3 ...........................................

.2465

Ring Gap Clear.-#1 ...................................................

.013/.008

Ring Gap Clear.-#2 & #3............................................

#2-.013/.008

#3- ...........................................

.016/.008

Ring Side Clar.-#1......................................................

.003/.001

#2 ...........................................

.003/.001

#3 ...........................................

.0025/.001

Section III. TORQUE SPECIFICATIONS

during engine/component reassembly.

The torque

9-3. General

values are listed in foot-pounds and must be strictly

Due to the many various sizes of fasteners used in the

observed.

engine, the following table 9-2 should be consulted

9-2