TM-9-2815-225-34-P
ENGINE, DIESEL: 6 CYLINDER IN-LINE TURBOCHARGED, CUMMINS MODEL NTC-400
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST
JULY 2005
TM-9-2815-225-34-P - Page 507 of 736
TM 9-2815-225-34&P
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WEAR LIMITS (Contd)
Table 1. Wear Limits (Contd).
PART
DESCRIPTION/LOCATION
WEAR LIMIT
Cylinder head
Distortion on mating
surface
0.002 in. (0.051 mm) maximum
Height
4.30 in. (11.024 cm) minimum
Turbocharger bearing housing bore
Inside diameter
0.876 in. (22.268 mm) maximum
Turbocharger wheel and shaft
Seal ring clearance
0.0005 in. (0.13 mm) maximum
Turbocharger wheel and shaft
bearing area
Outside diameter
0.5611 in. (14.252 mm) minimum
Turbocharger thrust collar
Thickness
0.0980 in. (2.489 mm) minimum
Turbocharger oil slinger
Seal ring clearance
0.0005 in. (0.13 mm) maximum
Turbocharger turbine blade
Turbine housing clearance
0.008 in. (0.20 mm) minimum
Turbocharger impeller
Impeller housing
clearance
0.006 in. (0.15 mm) minimum
Turbocharger wheel and shaft
End play
0.001 in. (0.254 mm) minimum –
0.004 in (0.1 mm) maximum
Water pump housing
Bearing bore
2.45 in. (62.22 mm) maximum
Impeller must be smaller than water
pump shaft impeller end to
Maintain a press fit
between components
0.001 in. (0.025 mm)
Water pump shaft impeller
End outside diameter
0.6262 in. (15.905 mm) minimum –
0.6267 in. (15.918 mm) maximum
Water pump shaft
Pulley end outside
diameter
0.6693 in. (17.000 mm) minimum –
0.6696 in. (17.008 mm) maximum
Water pump pulley must be smaller
than water pump shaft pulley end to
Maintain a press fit
between components
0.001 in. (0.025 mm)
Water pump pulley bore
Inside diameter
0.6663 in. (16.924 mm) minimum –
0.6673 in. (16.949 mm) maximum
Water pump impeller bore
Inside diameter
0.624 in. (15.85 mm) minimum –
0.6625 in. (15.88 mm) maximum
Impeller and water pump housing
Clearance
0.020 in. (0.508 mm) minimum –
0.040 in. (1.016 mm) maximum
Crankshaft and thrust bearing
washers
Total end clearance
0.007 in. (0.178 mm) minimum –
0.018 in. (0.457 mm) maximum.
Clearance for worn parts
0.022 in. (0.559 mm) maximum
Camshaft gear to crankshaft gear
Backlash
0.002 in. (0.051 mm) minimum –
0.020 in. (0.508 mm) maximum
Crankshaft and main bearings
gasket
Thickness
0.014 in. (0.356 mm) minimum –
0.080 in. (2.032 mm) maximum
Connecting rod cap and crankshaft
Side clearance
0.004 in. (0.102 mm) minimum –
0.013 in. (0.330 mm) maximum
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