MTD 464 Betriebsanleitung PDF herunterladen (Seite 30)

ARMY TM 9-6115 464 34

AIR FORCE TO 35C2-3-445-2

NAVY NAVFAC P-8-624-34

Table 1-1. FITS AND TOLERANCES

Mfg’s Tolerances Desired Clearance Maximum Maximum

Component Allowable Allowable

Minimum Maximum Minimum Maximum Wear Clearance

CYLINDER BLOCK:

3.7490 3.7510

Cylinder bore dia. 3.7505 3.7515 0.0050

Cylinder bore dia.(Bohn) 0.0005

Cylinder bore out of round 0.0005 0.0030

Cylinder bore taper 3.0665 3.0670 0.0020

Main brg. bore - less brgs. 2.1870 2.1880

Camshaft brg. bore - less brgs. 2.0000 2.0005

Oil pump bore 0.7494 0.7500

Valve tappet bore 0.003

Warpage 0.0005

Milling

CRANKSHAFT:

2.8734 2.8744

Main brg. journal dia. 0.0003 0.0030

Main brg. journal out of round 0.0003 0.0020

Main brg. journal taper 0.0020 0.0015

Main brg. run-out at center 2.3730 2.3740 0.0030

Conn. rod journal dia. 0.0003 0.0020

Conn. rod journal out of round 0.0003 0.0020

Conn. rod journal taper 0.1400 0.1700 0.0015

Fillet radii 0.0009 0.0034

Crankshaft main brg. clearance 0.0050 0.0100 0.0070

Crankshaft thrust clearance 4.3100 4.3150 0.0150

Seal surface dia.- rear 1.8740 1.8750 0.0150

Seal surface dia. - front 0.0150

CONN.ECTING ROD:

7.9980 8.0020

Length - c to c 2.5260 2.5270

Bearing bore - less bearings 0.0010 0.0030

Br to crankshaft clearance 0.0050 0.0120 0.0050

Conn. rod side clearance 0.0200

Piston pin bushing bore - less 1.4370 1.4380

bushing 1.2503 1.2508

Piston pin bushing bore 0.0015

CAMSHAFT:

2.0530 2.0540

Bearing journal dia. 1.6890 1.7250 0.0020

Lobe dia. meter - base to tip 0.0010 0.0100

Journal run-out in vee blocks 0.0015 0.0035 0.0040

Bearing clearance 0.0015 0.0055 0.0060

End thrust 0.0120

Back lash camshaft to crank 0.001 0.003

gear

PISTON:

Clearance in cyl. bore (pull on 5 lb. 8 lb.

1/2 x 0.0050 ribbon) -

Clearance in cyl. bore (pull

on1/2 x 0.005 ribbon bore)

3.7445 3.7455

Piston pin bore 1.2500 1.2502 0.0010

Width of ring groove - top -

Keystone 1/8 nom.

Width of ring groove - 2nd &

3rd comp 0.0975 0.0990 0.0050

Width of ring groove - top -

oil control 0.1880 0.1895 0.0050

Width of ring groove - lower

oil control 0.1880 0.1890 0.0050

PISTON PIN:

Length

3.0350 3.0400

’

Diameter 1.2498 1.2499 0.0020

Clearance in piston 0.0000 0.0005 0.0020

Clearance in connecting rod 0.0005 0.0012 0.0050

1-14 Change 1

1 2 ... 25 26 27 28 29 30 31 32 33 34 35 ... 492 493

MTD 464 Betriebsanleitung Seite 30

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