Maintenance Instructions | LUBRICATION |
The mower deck gearboxes (tee gearbox and blade drive gearboxes) are connected as a unitized assem- bly, and oil flows freely between them. The gearboxes are permanently lubricated (oil filled) and sealed requiring no scheduled lubrication. However, the gearbox oil seals should be checked every 25 hours for indication of an oil leak; particularly the lower seals on the blade drive gearboxes should be inspected, since they operate in a dirty environment. If an oil leak is noted, replace the oil seal and relubricate the gearbox assembly as follows:
1.Remove gearbox cover (footrest). Deck orien- tation should be the normal operating position.
Blade Drive
Gearboxes
Tee
Gearbox
Mower Deck Gearboxes
(shown with gearbox cover removed for clarity)
2.Clean the area around the individual gearbox cover plates to prevent contaminants from en- tering the gearcase.
3.Remove the screws securing the cover plates on the blade drive gearboxes.
4.Check the level of lubricant in the gearboxes. If the lubricant is low, add SAE E.P. (Extreme Pressure) 90W oil until the oil level is up to (sub- merges) the horizontal shaft in the gearbox (shaft parallel to cover plate).
NOTE: In case the gearboxes are completely drained of oil, approximately 5 fl. oz. (15 cl) of oil per gearbox is required to refill the gear drive assembly.
NOTE: Since the gearboxes are connected as a unit by connector tubes, it is necessary to add oil slowly. Allow a few minutes after adding oil for the oil to flow throughout the assembly and the oil level to stabilize before reassembly.
IMPORTANT: DO NOT overfill the deck gear- boxes. The gearbox assembly is not vented, and overfilling with oil will cause excessive pressure and result in oil leaks.
5.Check condition of the cover gasket and replace
if worn or damaged. Reinstall gearbox cover plates; torque screws to 24
DSD52 Mower Deck Lubrication
There are several special lubrication requirements for the DSD52 mower deck in addition to the requirements detailed in the Chassis and Deck Lubrication illustration. Lubricate the locations shown in the Blade Spindle Lubrication and Gearbox, Dolly Wheel, and
1.Lubricate the blade spindles every 25 hours with two (2) shots of SAE general purpose lithi- um or molybdenum base grease.
Blade
Spindles
Blade Spindle Lubrication
2.Check the oil level in the belt drive gearbox ev- ery 100 hours (or sooner if a visible oil leak has developed). With the deck in the normal oper- ating position, remove the level plug in the side of the gearcase. Add SAE E.P. (Extreme Pres- sure) 90W oil to maintain the oil level to the plug. If the oil level is low, check the gearbox for any indication of an oil leak. If an oil leak is noted, the gearbox will need to be removed and rebuilt.
3.Lubricate the dolly wheel pivot every 25 hours with general purpose grease.
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