Walker C19i - Mower Deck Gearbox Lubrication; Grease Fitting and Oil Point Lubrication

Maintenance Instructions LUBRICATION
55
Mower Deck Gearbox Lubrication
NOTE: These instructions apply to all mower decks
with gear-driven blades. Refer to DS52 Mower
Deck Lubrication in this section for the DS52 deck
with belt-driven blades. Refer to Mower Deck
Spindle Lubrication in this section for mower decks
with belt-driven blades.
On gear-driven decks, the mower deck gearboxes
(tee gearbox and blade drive gearboxes) are con-
nected as a unitized as sembly, and oil ows freely
between them. The gear boxes are permanently lu-
bricated (oil lled) and sealed requiring no sched-
uled lubrication. Howev er, 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 gear-
box assembly as follows:
1. Remove gearbox cover (footrest). Deck orien-
tation should be the normal operating position.
Tee
Gearbox
Blade Drive
Gearboxes
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) 80W-90 (API GL-5) gear lube until
the oil level is up to (submerges) the horizontal
shaft in the gearbox (shaft parallel to cover
plate).
NOTE: In case the gearboxes are completely
drained of oil, approximately 5 . oz. (15 cl) of oil
per gearbox is required to rell 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 ow throughout the assembly and
the oil level to stabilize before reassembly.
IMPORTANT: DO NOT overll the deck gear-
boxes. The gearbox assembly is not vented,
and overlling with oil will cause excessive pres-
sure and result in oil leaks.
5. Check condition of the cover gasket and re-
place if worn or damaged. Reinstall gearbox
cover plates; torque screws to 24 lb
·in. (3 N·m).
Grease Fitting and Oil Point Lubrication
Lubricate the grease ttings and oil points after ev-
ery 25 hours of operation. Lubricate more often
when operating in dusty or dirty conditions. Use
SAE general purpose lithium or molybdenum base
grease for grease ttings and light machine oil
(SAE 10) to lubricate oil points. Lubricate the
locations shown in the Chassis and Deck
Lubrication Points illustration.
NOTE: PTO universal joints (on the deck and trac-
tor) require routine lubrication after every 25
hours of running time. Remove tractor PTO quick
disconnect tube assembly for easy access to
grease ttings.
NOTE: The best way to lubricate the PTO tube half
of the universal joint assembly is to remove it from
the tractor. See instructions for removing and install-
ing PTO quick coupler, refer to Deck Installation in
Mower Deck Installation on Tractor in the Assem
bly Instructions.