Page: 2-12
WALKER MANUFACTURING COMPANY
July 2006
SERVICE INSTRUCTIONS
Transaxle Lubrication - Model MB
• The transaxle oil lubrication is SAE 20W-50 engine oil.
• Inspect both transaxle cases and hoses after every
100 hours of operation for visible leaks.
• The fluid levels for each transaxle can be checked vi-
sually by looking at the fluid levels in each expansion
reservoir. When the transaxles are cold, the fluid level
in the expansion reservoirs should be between 1/4" and
1/2" (.64 cm and 1.27 cm).
Expansion Reservoir Location
Changing Gearbox Oil
1. Thoroughly clean the exterior of the transmission
housing before servicing. Using a 1/4” hex wrench,
remove the plug located approximately 2” (50 mm)
from the bottom on the back side of each transaxle
allowing the oil to drain.
2. To remove the remainder of the oil [approximately
6-8 oz. (.18–.24 liter)] below the plug, use an oil
suction gun. Reinstall drain plugs.
3. Remove and replace the oil filters using a 3/8” hex
wrench.
4. Using an oil suction gun, remove all oil in the res-
ervoirs.
5. Place 6” (15 cm) block under the left hand drive
wheel.
6. Remove the oil reservoir hose attached to the el-
bow on top of the transaxles and remove the el-
bows to access the oil fill openings.
7. Fill the transaxles with 20W-50 oil through the
opening where the elbows were. Fill up to the
opening.
8. Before reinstalling the elbows, screw the locking
nut on the elbows down until they are snug (the o-
ring on the elbow will be to the bottom of the o-ring
groove).
9. Reinstall the elbows. When the elbow begins to be
snug, position the elbow as it was when removed
and tighten the lock nut.
10. Remove the block from the left wheel and reattach
the reservoir hoses to the transaxles.
11. Fill both reservoirs to 1” (25 mm) with 20W-50 oil.
12. Start and drive the unit for 1- 2 minutes.
13. If the transaxles sound noisy or have poor steering
response, recheck oil level in both transaxles by re-
moving the elbows (check oil level at fill opening).
14. If oil needs to be added refer back to steps 5-13.
Component Locations
Reservoir Cap
Hot Level
Cold Level
Oil Reservoir
Oil Fill
(Remove Elbow)
Drain Plug
To Next Page
Loading...
Need help?
General
