CUMMINS B3.3 - Cylinder Head

Diesel Engine Specifications
101
Specifications
Valves, Valve Guides, and Springs
Ref Inspection Item Standard Remarks
VALVES
Intake
Tolerance:
-0.035 mm
[-0.0014 in]
-0.050 mm
[-0.0020 in]
Stem Diameter
Exhaust
Nominal:
8 mm
[0.3130 in]
Tolerance:
-0.050 mm
[-0.0020 in]
-0.065 mm
[-0.0026 in]
Intake
0.035 to 0.065 mm
[0.0014 to 0.0026 in]
3
Clearance Between Guide and Stem
Exhaust
0.050 to 0.080 mm
[0.0020 to 0.0031 in]
Clearance Limit:
0.20 mm
[0.0079 in]
Intake
2 Head Thickness
Exhaust
1.40 to 1.60 mm
[0.0551 to 0.0630 in]
Repair Limit:
1.00 mm
[0.039 in]
Intake
0.35 mm
[0.0138 in]
1
Valve Clearance
(at Cold and Warm)
Exhaust
0.50 mm
[0.0197 in]
Tolerance:
±0.02 mm
[±0.0008 in]
VALVE GUIDE
Intake
5
Protrusion Above Cylinder Head
Surface
Exhaust
14.5 mm
[0.571 in]
Tolerance:
±0.2 mm
[±0.0079 in]
VALVE SPRING
Free-Length
49.2 mm
[1.94 in]
Repair Limit:
48.5 mm
[1.90 in]
Installed Length
40.5 mm
[1.59 in]
—
Installed Load
18.5 ±0.9 kg
[40.8±2.0 lb]
Repair Limit:
16.5 kg
[36.4 lb]
4
Squareness —
Repair Limit:
1.85
18900014