Barko 495B - SE - Turntable Bearing Maintenance Continued...; Inspecting the Turntable Bearing; Bearing Mounting Bolt Torque; Bearing Lubrication

Service ManualLast Updated - 9/28/2016
495B SE (S)
92
INSPECTING THE TURNTABLE BEARING
The turntable bearing area is a potential pinch point. Before doing any maintenance
or inspection on turntable bearing, lower boom and attachment to the ground,
shut machine down to a zero energy state and put ignition key in your pocket.
Do not operate machine with a bearing that is worn out, damaged or has
reached maximum permissable clearance measurements. Death, severe injury
or property damage will result.
Visually inspect the turntable bearing daily for signs of:
- wear or damage.
- loose or missing mounting bolts.
 - debrisoruidsonbearingsurfaces.
Cleanoffbearing.Donotallowdebrisoruidstobuilduponornearbearing(theynotonlyshortenthelifeofthe
bearing but may also hide potential problem areas).
Replace any bearing mounting bolts that are damaged or missing.
BEARING MOUNTING BOLT TORQUE
Check bearing mounting bolts for proper torque every 100 hours of operation. Torque to proper amount given in
SpecialTorqueSpecicationssectionofmachine’sOperator’sManual.
Loose or overtorqued bolts can cause death, severe injury or property damage.
Maintain proper bolt torque. Visually check bolts daily. Check torque every 100 hours.
BEARING LUBRICATION
Use a multi-purpose grease with a lithium base, EP additives and rust inhibitors.
- Above 32 degrees F =Use #2 grease
- Below 32 degrees F = Use #1 grease
High pressure grease guns are not recommended for the Turntable Bearing, as they may damage the seal. Use of a
hand grease gun is suggested.
Lubricate the turntable bearing dailyatthettingslocatedontheringorontheheadbaseplate.
NOTE:Insomeinstancesthebearingcanbegreasedfromttingsthatarelocatedeitherinsidethecabontheooror
on the loader platform outside the cab.
Rotate the machine slightly between each shot of grease for complete distribution of the grease throughout the
bearing.Rotatethemachineatleasttwocompleterevolutionsforeachtting.Threeshotsofgreasepertting
shouldbesufcient,onadailybasis.
Do not allow anyone on or near the machine while rotating the upper structure
during the lubrication process. Do not start up machine until all personnel are
a safe distance from the machine.
TURNTABLE BEARING MAINTENANCE CONTINUED...