Table 1. Engine Repair and Replacement Standards-Continued

TM 5-6115-400-35

Table 1. Engine Repair and Replacement Standards-Continued

Manufacturer'

Maximum

Component

dimensions and

Desired

allowable

tolerance in

clearance

wear and

inches

clearance

Min.

Max.

Min.

Max.

Outside diameter at machined area below flange .........

5.8710

5.8730

Outside diameter at packing ring locations .................. -

5.7780

5.7800

Outside diameter of sleeve flange .................................

6.2170

6.2210

Cylinder block to sleeve clearance-sleeve lower

O.D. ........................................................................ -

------------

0.0010

0.0050

Cylinder block to sleeve clearance at machined

area below flange ......................................................

------------

0.0010

0.0050

Cylinder block to sleeve clearance at sleeve flange .......

------------

0.0080

0.0170

Fire wall height above cylinder flange sleeve .................

------------

0.0370

0.0400

Cylinder sleeve flange thickness ...................................

0.4630

0.4650

Flange projection above cylinder block with sleeve

installed .....................................................................

------------

0.0020

0.0050

Flange height adjusting shims available-0.005 in.,

0.008 in., 0.010 in., 0.015 in., and 0.020 in.

Cylinder block:

Counterbore diameter for cylinder sleeve flange ............

6.2290

6.2340

Depth of counterbore .....................................................

0.4600

0.4620

Bore for cylinder sleeve-top ......................................... -

5.8740

5.8760

Bore for cylinder sleeve-bottom .....................................

5.7810

5.7830

Bore for camshaft bearings ...........................................

2.7470

2.7480

Bearing bore in cylinder block (less bearing; cap

in place; tightened to specified torque) ......................

4.3743

4.3750

Piston:

Note. Combustion chamber is in piston

Combustion chamber inside dia. ...................................

3.5570

3.5610

Combustion chamber depth ..........................................

0.8810

0.8850

Compression pressure (minimum) at sea level, 600

rpm, (hot) pressure- 500 psi. Differential be-

tween cylinders in an engine not to exceed 25

psi

Material-Aluminum alloy

Length .............................................................7.000 in.

Diameter of bottom skirt measured at right

angle to piston pin .....................................................

5.2430

5.2440

Bore for piston pin (cold) ...............................................

2.0018

2.0020

Measurement from center of piston pin bore to top

of piston ....................................................................

4.2510

4.2550

Piston skirt-to-sleeve clearance at skirt bottom,

right angle to piston pin .............................................

0.0070

0.0090

Piston pin:

Type-Full Floating

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

4.3650

4.3750

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

2.0015

2.0017

Fit of pin at room temperature .......................................

------------

0.0001

0.0005

Inside diameter of connecting rod bushing after

reaming .....................................................................

2.0027

2.0033

Piston pin to connecting rod bushing clearance ............

-------------

------------

0.0010

0.0018

Piston rings:

Location of rings

Top groove-compression ring

2nd groove-compression ring

3rd groove-compression ring

4th groove-oil control-ventilated w/spring