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WALKER MANUFACTURING COMPANY
July 2006
SERVICE INSTRUCTIONS
Lifting Mechanism
Lubricate the grease fittings (4) across the lifting mech-
anism attached to the frame every 25 hours. Use SAE
general purpose lithium or molybdenum base grease.
Lubricating Lift Mechanism and Camshaft Drive
Camshaft Drive System
Lubricate the grease fittings (16) on the camshaft drive
system every 4 hours. Use Almagard
®
#3752 lubri-
cant (Walker P/N 6685-7).
The bearings at each end and attached to the retractor
plate arms are sealed and should be greased every
100 hours of operation. Use SAE general purpose lith-
ium or molybdenum base grease.
PTO U-Joint
Lubricate the grease fitting for the PTO U-Joint every 8
hours with SAE general purpose lithium or molybde-
num base grease.
The PTO U-Joint is accessed by removing the gearbox
cover.
Implements
Rotary Broom Gearbox
The gearbox is permanently lubricated (oil filled) and
sealed requiring no scheduled lubrication. However,
the gearbox oil seal(s) should be checked every 25
hours for indication of an oil leak. If an oil leak is noted,
replace the oil seal and relubricate the gear-box as
follows:
1. Remove the gearbox following the procedure de-
scribed in REPLACING/REPAIRING the Rotary
Broom Gearbox in this section.
Rotary Broom Gearbox with Cover Removed
2. Clean the area around the plug located on the front
of the gearbox.
3. Remove the gearbox plug on the gearbox.
4. If the lubricant is flowing out of the plug hole, the
gearbox is full. Reinsert the plug. If no lubricant
flows out, add SAE E.P. (Extreme Pressure) 80W-
90 oil into the gearbox through the plug hole until it
starts to flow out.
5. Wipe the threads of the gearbox plug before rein-
stalling.
6. Torque plug to 24 in-lb (2.7 N·m).
NOTE: In case the gearbox is completely drained
of oil, approximately 5 fl. oz. (15 cl) of oil is required
to refill the gearbox.
Lifting
Mechanism
Camshaft
Drive
Gearbox
Plug
Gearbox
Mounting
Bolt
Gearbox
Cover
Dipstick Plug
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