Mower Deck Gearbox Lubrication; Mower Deck Spindle Lubrication; Check Transaxle Fluid Level - Walker S18 Operator's Manual

Maintenance Instructions

Mower Deck Gearbox Lubrication

NOTE: These instructions apply to all mower decks
with gear-driven blades.
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 flows freely
between them. The gear boxes are permanently lu­
bricated (oil filled) 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 en vironment. 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.
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).
54
Refer to Mower Deck
Tee
Gearbox
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 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

Mower Deck Spindle Lubrication

For mower decks with belt-driven blades, lubricate
each deck spindle grease fitting every 25 hours.
Use SAE general purpose lithium or molybdenum
base grease for grease fittings.

Check Transaxle Fluid Level

● The transaxle oil lubrication is SAE 20W-50 (API
Service Class SL or higher) engine oil.
● Inspect both transaxle cases after every 25
hours of operation for visible leaks.
● The fluid level of the transaxles can be checked
visually by looking at the fluid level in the expan­
sion reservoir. When the transaxles are cold, the
fluid level in the expansion reservoir should be
between 1/4 in. and 1/2 in. (0.64 cm and 1.27 cm).
Reservoir Cap
Hot Level
Expansion Reservoir Location
LUBRICATION
· ·
in (3 N m).
Hose to
Transaxles
Cold Level