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2. Clutch sleeve makes contact with synchronizing spring which
moves synchronizing drum against cone on gear. Fig. 109.
3. Rotation of drum causes servo-cams to align for contact.
Fig. 109— Operation of Synchro Mesh
Transmission —Nn.
2
Fig. 110— Operation of Synchro Mesh Transmission —No.
3
4. Servo cams press synchronizing drum against external cone on
gear, forcing gear to assume same rotative speed as engaging teeth
on clutch sleeve. Fig. 111.
5. Clutch teeth having assumed the same rotative speed, the synchronizing
drum pressure is re-leased, permitting the engaging teeth to hunt
or float in order to slide into each other easily. Fig. 112.
47Care
At least every 1000 miles the oil level of the
transmission should be checked and the proper grade of lubricant
added to keep this level even with the plug on the side of the
transmission. The plug on the bottom of the transmission is for
the purpose of draining the lubricant when necessary.
Fig. 111— Operation of Synchro Mesh
Transmission —No
4
Fig. 112— Operation of Synchro Mesh Transmission —No.
5
It is a good plan to drain this lubricant at least every 5,000
miles and flush out the trans-mission case with a good grade of
flushing oil. This will remove any foreign matter that may be in
the transmission.
