Southbend sb1016 Quick Change Gearbox, Priming the Oil Pump, To prime the oil pump, Changing Oil

For Machines Mfg. Since 7/09 M A I N T E N A N C E Model SB1016/SB1036

Priming the Oil Pump

The lubrication system is also equipped with a check valve that is shown in Figure 121. This valve allows oil to flow to the headstock during pump operation, but prevents the oil from draining back into the tank and the pump from losing its prime when not in operation. However, if after long-term storage, or if the machine is being started for the first time in test run, we recommend that the pump and line be primed with oil to prevent a dry run.

Items Needed:	Qty
Pump-Type Oil Can Filled with Headstock Oil... 1
Wrench 17mm	1

To prime the oil pump:

1.DISCONNECT LATHE FROM POWER!

2.Remove the end gear cover.

3.Remove the headstock oil supply line from the check valve, as shown in Figure 121.

Check
Valve
	Oil
	Flow
Change Headstock Oil
Gears	Supply Line

Figure 121. Priming location and check valve.

4.Fill the supply line with oil, reinstall, and test pump operation and verify oil flow.

Quick Change Gearbox

Oil Type ...... Mobil Vactra 2 or ISO 68 Equivalent

Oil Amount	As Needed
Check/Add Frequency	Daily
Change Frequency	Annually

Checking & Adding Oil

The sight glass shown in Figure 122 shows the oil level in the gearbox. At the full level, the oil fills approximately 3⁄4 of the sight glass. At the add level, the oil fills 1⁄4 of the sight glass or less. Check the oil level daily.

Gearbox Oil

Sight Glass

Figure 122. Gearbox sight glass location.

Changing Oil

The gearbox oil must be changed after the break-in period and then annually (or every six months with hard service or extreme working conditions). Figure 123 shows fill and drain plugs used when changing the gearbox oil. The fill plug is removed with a 20mm wrench, and the drain plug is removed with a 16mm wrench.

Gearbox Oil

Fill Plug

Gearbox Oil

Drain Plug

Figure 123. Location of gearbox fill and drain plugs.

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