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 506 of 736
TM 9-2815-225-34&P
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0054 00-4
WEAR LIMITS (Contd)
Table 1. Wear Limits (Contd).
PART
DESCRIPTION/LOCATION
WEAR LIMIT
Injector cam follower roller
Inside diameter
0.704 in. (17.882 mm) maximum
Intake/exhaust roller
Pin diameter
0.4997 in. (12.692 mm) minimum
Injector roller
Pin diameter
0.6997 in. (17.772 mm) minimum
Intake/exhaust cam follower roller
Pin bore
0.4995 in. (12.687 mm) maximum
Injector cam follower roller
Pin bore
0.6997 in. (17.772 mm) maximum
Oil pump driveshaft
Diameter
0.874 in. (22.20 mm) minimum
Oil pump gear
Clearance
0.060 (1.52 mm) minimum –
0.070 in. (1.78 mm) maximum
Piston pin dowel
Diameter
0.220 in. (5.59 mm) minimum
Connecting rod bolt
Pilot area diameter
0.541 in. (13.74 mm) minimum
Threaded area diameter
0.6245 (15.862 mm) minimum
Connecting rod
Inside diameter
3.3167 in. (8.4244 cm) maximum
Camshaft bearing
Journal diameter
2.495 in. (6.337 cm) minimum
Cam follower bushing
Inside diameter
0.7511 in. (19.078 mm) maximum
Intake/exhaust cam follower roller
Inside diameter
0.5015 in. (12.738 mm) maximum
Crankshaft gear
Step diameter
3.761 in. (9.552 cm) minimum
Crankshaft
Thrust flange
0.003 in. (0.076 mm) maximum
Piston ring to piston ring groove
Clearance
0.006 in. (0.15 mm) maximum
Piston
Outside diameter
5.480 in. (13.919 cm) minimum
Piston skirt
Outside diameter
5.493 in. (13.952 cm) minimum
Piston pin bore
Diameter
2.000 in. (5.080 cm) maximum
Piston pin
Outside diameter
1.9988 (5.0769 cm) minimum
Fuel gear pump idler shaft
Outside diameter
0.499 in. (12.70 mm) minimum
Fuel gear pump idler gear
Length
0.7483 in. (19.007 mm) minimum –
0.7486 in. (19.014 mm) maximum
Fuel gear pump
Gear body depth
0.7478 in. (18.994 mm) minimum –
0.7481 (19.002 mm) maximum
Fuel gear pump gear body shaft bore
Inside diameter
0.5016 in. (12.741 mm) maximum
Fuel gear pump
Driveshaft backlash
0.004 in. (0.1016 mm) maximum
Driveshaft endplay
0.0009 in. (0.228 mm) minimum –
0.0015 in. (0.038 mm) maximum
Tachometer drive bushing
Inside diameter
0.752 in. (19.10 mm) maximum
Governor barrel
Diameter
0.002 in. (0.051 mm) smaller than
governor barrel outside diameter
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