14
MAINTENANCE
BEARING ASSEMBLY AND LUBRICATION
Practice Safety
Understand & practice safe service procedures before doing work. Follow ALL the operating, maintenance and safety
information in the equipment operator manual. Clear the area of bystanders, especially small children, when performing
any maintenance or adjustments. Keep work area clean and dry. Use adequate lighting for the job. Use only tools,
jacks and hoists of sufficient capacity for the job. Never lubricate, service, or adjust machine while it is moving. Keep
hands, feet, and clothing from power-driven moving and rotating parts. Disengage all power and operate controls to
relieve pressure. Lower equipment to the ground & stop the engine. Remove the key. Wait for all moving parts to stop
before servicing, adjusting, repairing or unplugging. Securely support any machine elements with blocks or safety
stands that must be raised for service work. Keep all parts in good condition and properly installed. Fix damaged
equipment immediately. Replace worn or broken parts. Remove any buildup of grease, oil, or debris. Make sure all
guards are in place and properly secured when maintenance work is completed.
MAINTENANCE
NOTE:
Be certain to align the grease fitting with the slot in the wheel and the hubcap so that the grease
can flow freely. (on 2966-116-ST, 2966-117-ST, & 6200-115 sealer wheel assemblies)
Lubrication
CAUTION: To help prevent serious injury or death to you or others caused by unexpected movement,
service machine on a level surface. Lower machine to ground or sufficiently lock or block raised machine
before servicing. If machine is connected to tractor, engage parking brake and place transmission in
"PARK", shut off engine and remove key. If machine is detached from tractor, block wheels and use shop
stands to prevent movement.
CAUTION: Do not clean, lubricate, or adjust machine while in motion.
Use grease based on NLGI consistency numbers & the expected air temperature range during the service interval.
Use a
polyurea high temperature wheel bearing grease
. Other greases may be used if they meet the following
NLGI Performance
Classification: GC-LB
IMPORTANT: Some types of grease thickener are not compatible with others. Consult your grease supplier
before mixing different types of grease.
Alternative Lubricants
Conditions in certain geographical areas may require special lubricants & lubrication practices which do not appear in
the operator's manual. If there are any questions, consult Yetter Manufacturing Co. to obtain latest information and
recommendation.
Storing Lubricants
Your machine can operate at top efficiency only if clean lubricants are used. Use clean containers to handle all
lubricants. Store them in an area protected from dust, moisture and other contaminants.
Lubrication Symbols
Lubricate with grease at hourly interval indicated on symbol.
Lubrication Intervals
IMPORTANT: The recommended service intervals are based on normal conditions; severe
or unusual conditions may require more frequent lubrication.
Perform each lubrication and service procedure at the beginning and end of each season.
Clean grease fittings before using grease gun, to avoid injecting dirt and grit into the bearing. Replace any lost or
broken fittings immediately. If a fitting fails to take grease, remove and clean thoroughly, replace fitting if necessary.
Also check for failure of adjoining parts.
