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WALKER MANUFACTURING COMPANY
July 2006
SERVICE INSTRUCTIONS
Tractor PTO Gearbox Lubrication - Model MC, MD,
MT, MTL, MTEFI
Checking Gearbox Oil Level
Check the gearbox oil level every 25 hours, and if nec-
essary, add oil [SAE E.P. (Extreme Pressure) 80W-90
gear lube] to maintain oil level to the FULL mark on the
dipstick.
IMPORTANT: DO NOT overfill the PTO gearbox to
avoid oil leakage out of the dipstick standpipe.
If the oil level is low, check the gearbox for any indica-
tion of an oil leak. If an oil leak is noted, the gearbox will
need to be removed and rebuilt.
Dipstick Location, Tractor PTO Gearbox - Model MT
Dipstick Location, Tractor PTO Gearbox - Model MD
Dipstick Location, Tractor PTO Gearbox - Model MC
Changing Gearbox Oil
The tractor PTO gearbox is oil filled. No scheduled oil
change is required. However, changing the oil after the
first 100 hour break-in period will extend gearbox life
and is recommended.
1. Remove the drain plug in the bottom of the gear-
case, drain the oil, and reinstall the plug.
2. Refill the gearbox through the dipstick standpipe
using 7 to 8 fl. oz. (21 to 24 cl) of SAE E.P. (Ex-
treme Pressure) 80W-90 gear lube. Remove plug
in top of gearcase to vent air when refilling.
3. Check that the oil level is at the FULL mark on the
dipstick. DO NOT overfill.
PTO
Gearbox
Jackshaft
Dipstick
Dipstick
PTO
Gearbox
Jackshaft
Dipstick
PTO
Gearbox
Jackshaft
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