Figure 3-6. Lubrication
of traction drive
and propelling air motors.
Note. Since the hydraulic system is a closed system,
d. If it is necessary to add oil, remove the
there should never be need to add a significant
filler plug at the top of the final drive housing
amount of oil. Should frequent refilling be required,
inspect carefully for leaks or defective seals and com-
flows from the oil level plug port. Install the
oil level plug and the fill plug.
e. When necessary to drain the oil from the
3-13. Lubricating Traction Unit
final drive housing, remove the magnetic drain
a. Clean the oil fittings on the track rollers,
plug from the bottom of each housing (fig.
rear sprocket shaft, and front wheel support
3-3) and allow all
of the oil
to drain off.
Clean and install the drain and level plugs and
Note. If the pneumatic drill is standing or oper-
refill through the fill plug port (d above).
ating in mud or water, clean and oil the fittings every
When refilling, note that the capacity of each
1 hours instead of every 8 hours.
drive housing is 1 1/2 pints of oil.
b. Using an oil gun, fill each fitting until
oil is forced out through the seals.
c. To check the oil level in the final drive
Air Feed Motor
housing, remove the oil level plug near the
bottom of each drive (on the inner side of the
a. Remove the worm housing plug from the