HALE AP, Technical Manual

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F. If procedures call for a wet pump, open tank fill valve (removes trapped air).
Close valve after several minutes. 1.
Check apparatus for signs of leaks. 2.
4.4.3 Quarterly Maintenance
Perform the following procedure every three months.
4.4.3.1
Check Gearbox Oil Level
The gearbox is drained of oil at the factory prior to shipment. Check the gearbox oil level upon
receipt of the pump and then at least every three months. The gearbox needs to be filled with 1
to 1–1/2 qt (1.1 liter) of the gear oil listed in 5.7.2, Recommended Lubricants. (The amount de-
pends on gearbox position.) Figure 11 shows the typical gearbox oil fill, and level component lo-
cations as the gearbox is rotated through the available positions. Check the gearbox oil level via
the plug style sight glass.
Figure 12. Typical Gearbox Oil Fill/Level Component Locations
Figure 11. Typical Gearbox Oil Fill/Level Component Locations – CONTINUED
Perform the following procedure to check the oil level in the gearbox.
A. Visually check gearbox oil level sight glass (Figure 11).
NOTE
The oil level should be the center of the sight glass.