11
-
3
11.6 Gearbox Oil Level
Gearbox oil levels should be checked routinely and filled to
line (A) shown in Figure 11
-
6.
Side plugs (B) can be found on all gearboxes and can be
used to measure the correct fill level.
When gearboxes are filled with the proper amount of oil,
the level should be just below the threads of the side plug
(B). Excess oil can be drained from the gearbox using the side plug (B).
11.7 Breather Cleaning
The breather must be able to vent atmospheric conditions during heating and cooling cycles of op-
eration. If it cannot vent, oil will seep out of seals and run low. Prolonged operation with low oil lev-
els will damage the internal components. To clean the breather:
1.
Remove breather (A).
2.
Stop up the breather opening using a plastic plug or a clean rag
to prevent contaminants from entering the gearbox.
3.
Soak the breather in solvent for one hour.
4.
Use a pointed instrument or wire to remove any residue from
breather passages.
5.
Blow out the breather with high pressure air.
6.
Blow through the breather to ensure the passages are clear.
7.
Reinstall and tighten the breather (A) in the gearbox.
Figure 11
-
6: Gearbox Oil Level
Figure 11
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5: Gearbox Breather
Summary of Contents for 2720
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