TM 5-2420-230-24-2
Section V - Engine Component Specifications - Group 18
Component Specifications and Torque Values
B Series
Page V-23
Component or Assembly (Procedure)
Ref.No./Steps
Metric
U.S.
Connecting Rod Capscrews
1
35 Nm
26 ft-lb
2
70 Nm
52 ft-lb
3
100 Nm
74 ft-lb
Cylinder Block Pipe Plugs
Refer to ``Pipe Plug Torque Value Table'' at the rear of this section for torque value of various plug
sizes.
Cylinder Head - Rebuild Specifications
Cylinder Head Flatness
End-to-End
4 Cylinder
0.203 mm
MAX
0.008 in
6 Cylinder
0.305 mm
MAX
0.012 in
Side-to-Side
0.076 mm
MAX
0.003 in
Valve Spring Free Height:
1991
55.63 mm
Nominal
2.190
in
70.64 mm
Nominal
2.781
in
Marine/Rotator
56.00 mm
Nominal
2.208
in
1994
60.00 mm
Nominal
2.362
in
Valve Spring Working Height and Load
Working
Load For Working Height (C)
Height (B)
48.97 mm
643.2 N
MIN
144.6 lbf
1.927 in
691.2 N
MAX
155.4 lbf
63.5 lbf
MIN
282.7 N
Marine With Rotator
47.24 mm
72.6 lbf
MAX
323.1 N
1.859 in
1994
49.25 mm
359 N
MIN
80.7 lbf
1.94 in
397 N
MAX
89.2 lbf
64.0 lbf
MIN
All Others
49.25 mm
285 N
72.1 lbf
MAX
321 N
1.94 in
Valve Stem O.D.
7.98 mm
MAX
0.3142 in
Valve Head Thickness at O.D.
T
0.79 mm
MIN
0.031 in
L-497