TM 5-2420-230-24-2
B3.9 and B5.9 Series Engines
Cylinder Head - Specifications
Section V - Specifications
Page V-9
Component or Assembly (Procedure)
Ref.No./Steps
Metric
U.S.
Cylinder Head - Specifications
Cylinder Head Weight
Cylinder No.
Kg
lb
4
36
79
6
51.3
113
Cylinder Head Flatness (6B engine)
End-to-End
0.305 mm
MAX
0.012 in
Side-to-Side
0.076 mm
MAX
0.003 in
Cylinder Head Flatness (4B engine)
End-to-End
0.203 mm
MAX
0.008 in
Side-to-Side
0.305 mm
MAX
0.012 in
Capscrew Free Length
Short
71.5 mm
MAX
2.815 in
Medium
122.1 mm
MAX
4.807 in
Long
182.9 mm
MAX
7.201 in
Valve, Cylinder Head (002-020)
Valve Guide Bore Diameter
8.019 mm
MIN
0.3157 in
8.090 mm
MAX
0.3185 in
Valve Stem Diameter
7.94 mm
MIN 0.3126 ft-lb
7.98 mm
MAX 0.3142 ft-lb
Valve Rim Thickness Limit
0.79 mm
MIN
0.031 in
Valve spring free length
Approx. Free Length (L):
1991
55.63 mm
2.190 in
Maximum Inclination:
1991
1.00 mm
0.039 in
Approx. Free Length (L):
1994
60.00 mm
2.362 in
Maximum Inclination:
1994
1.00 mm
0.039 in
L-1373