Digga PDD - Page 49

49
Procedure to Check the Gearbox Oil Level
Unfortunately, there is no provision to make a quick visual inspection of the gearbox oil level. The gearbox is lled
to the correct level at the factory. Unless there are clear signs of gearbox oil leakage it should not require topping
up between scheduled oil changes or services.
Procedure to Drain Gearbox Oil
It is advisable to replace the output shaft seal at the rst oil change as this is the most important oil change
to prolong the life of bearings and gears. The reasoning behind this is that whilst bedding in, gearboxes can
generate ne metallic contamination. This will nd its way to the lowest part of the gearbox and collect in the
output seal thus allowing an abrasive paste to wear the output seal and the output shaft. It is advisable that oil
changes are performed by a Digga Authorised Service Agent, however it is not always possible for many reasons
to get this done by a Dealer however what is important is that the oil is changed at the required intervals.
1. Ensure that the gearbox is stable, secure and safe to work on prior and that the drive unit is vertical and
that there is an appropriate sized drip tray to catch the drained oil.
2. Before commencing to drain any oil, check the serial tag of the unit to determine the quantity of oil which
the gearbox holds. This will indicate the quantity of oil which has to be replaced into the gearbox and
size of bucket needed to contain the oil. Remove the drain plug from the output housing. This will allow
the bulk of the gearbox oil to drain out (this will not drain the gearbox entirely). The lower section of the
output housing, below the plug will still contain some oil.
3. To drain the remaining oil, lie the drive unit on it’s side with the bung hole facing down.
4. Once all oil has been drained follow the procedure on the following page to rell oil.
Remember to consider the environment, state and federal laws relating to disposal of oil. Dumping and spillage of oil
onto land, storm water outlets and waterways is illegal. Oil must be disposed of by professional waste disposal or recycle
specialists.
NOTE
14 Maintenance