Barko Hydraulics 495B SD - Page 81

Operation and Maintenance Manual
495B ML TM (S)
81
Last Updated - 08/31/2016
Figure 2
3. Removepumpdrivefromenginebyremovingcapscrews,holdingengineadaptorhousingtoywheelcoverof
engine. Remove pump drive straight away from engine.
a. Flex plate driven models:
The drive shaft will remain with either the drive plate or the pump drive box. Be prepared to retrieve
drive shaft from either.
4. Pump drive gear box should be positioned so that the hydraulic pump adaptor pads are facing up. Re-move place
bolts or nuts from studs and lift adaptor pads up from gear box.
5. Lift driven gears and their bearings from pump drive box. This can be done by hand since the bearings are slip
ttedtothehousingandpumpadaptorbores.Bearingsarepressttedtogearhubs.Itmaybenecessarytotip
gear slightly to clear pinion gear bearing pocket.
6. After all driven gears and their bearings have been removed, position gear box so that the engine adaptor is
facing up. Remove place bolts and lift engine adaptor up from gear box. Lift pinion gear and bearings
from pump drive box.
7. Should replacement of oil seal be required, drive oil seal toward engine side of engine adaptor.
1. ENGINE
2. FLYWHEEL COVER
3. ENGINE ADAPTOR
4. PUMP DRIVE
5. HYDRAULIC PUMPS
6. Clean all magnetic drain plugs before replacing.
 7. Alwaysusecleanuidincleancontainers.
 8. Donotoverll.Thiswillresultinoverheatingandpossiblemalfunctionoftheunit.
 9. FillwithEP80-90gearuid(untiluidcomesbackoutofthellhole).Donotoverll!
 10. Maximumoperatinguidtemperature: 225degreesF.(107.2degreesC.)
PUMP DRIVE DISASSEMBLY
1. DrainuidfrompumpdrivegearboxbyremovingAllenheadpipeplugfrombottomofmaincase.
2. Remove hydraulic pumps by removing capscrews, or nuts from studs. See Figure 2. Remove pumps
straight away from pump drive.
PUMP DRIVE MAINTENANCE CONTINUED...