TM 9-1829A, April 1944
58/100
2021-07-07
c.
Remove elbow joint and case:
Some instruments of this type have an elbow joint which must be removed
by removing screw (fig. 79) before case can be removed.
Figure 79: Removing elbow joint screw
Then remove two case screws at rear of unit and lift mechanism out of case. Using spanner wrench (T-
49509) unscrew bevel gear and sleeve assembly from elbow joint (fig. 80).
Figure 80: Removing bevel gear and sleeve assembly, using spanner wrench (T-49509)
d.
Remove odometer assemblies:
Remove three screws (fig. 99) and lift off complete odometer and frame
assembly. This allows third gear (fig. 101) to be lifted out. Remove total odometer assembly by removing
screw and clip (fig. 81), or by removing spring clip (fig. 99), depending upon type of odometer retainer used
on instrument being disassembled. Remove trip odometer clip (fig. 81) and lift out trip dials and shaft
assembly, tenth dial, dial spring, reset spring, and drive gear (fig. 100).
Figure 81: Speedometer mechanism (dial removed)