Under extremely dusty conditions, repack the wheel bearings after 125 hours or 3.000 miles, whichever
comes first. Jack up the flatbed cargo trailer. Remove the bolts and washers securing the hub cap to the hub.
Remove the hub cap and gasket. Bend tab of spindle tongue washer up to allow removal of outer spindle nut.
Using spindle nut wrench and handle, available from a towing vehicle, remove outer spindle nut. Remove
spindle tongue washer. Using the spindle nut wrench and handle, remove inner spindle nut: then, remove
spindle lock washer.
Carefully remove tire and wheel assembly and hub and drum assembly as single unit. Remove grease retainer
assembly from hub; then, remove the inner bearing cone. Clean bearing cones, grease retainer assembly and
inside portion of hub with solvent. Pack Bearing cones with GAA grease. Lubricate brake spider fitting when
hub assembly has been removed. Use care not to over lubricate and cause excessive amount of grease to con-
taminate brake shoes.
Check oil level in sight glass daily. Add oil when necessary to return oil to level indicator mark on the sight
glass. Use lubricating oil, gear, multi- purpose MIL-L-2105.
CAUTION -- The chemical feed pump must not be operated on preservative oil, or oil that has had
preservative added to it. Damage to pump can result and will void warranty. If in doubt, drain and refill with
To add oil, remove fill plug from pump body. Add a small amount of oil at a time to allow time for oil to seep
through pump body. Then recheck oil level.
Drain oil quarterly. To drain oil, remove drain plug.
Refill with fresh oil to level indicated on sight glass.
Check oil level in sight glass daily. Add oil when necessary to maintain oil level between indicator marks on
the sight glass. Use lubricating oil, internal combustion engine, tactical service MIL-L-2104.
CAUTION -- The reverse osmosis pump must not be operated on preservative oil. or oil that has had
preservative added to it. Damage to pump can result and will void warranty. If in doubt. drain and refill with
After first week of operation with a new pump, drain crankcase by opening drain valve. Remove magnetic
plug and wipe contaminants from plug end. Refill through filler/vent plug.
Drain oil quarterly and refill.
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