Vogt MD Series - Impeller Adjustment with Dial Gauge

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Maintenance

7.11.1 Impeller Backlash Adjustment Using Magnetic Base Dial Gauge

• Remove the grid from the plug cover.

• Remove the flexible body from the coupling core.

• Loosen the shaft adjusting bolts (fig.25) until a clearance of about 5 to 8 mm is achieved.

• Tighten the bearing housing - motor bracket bolts (fig. 24), until the impeller stops in the pump casing. This is

checked by turning the shaft by hand until friction is felt.

• Install the magnetic base dial indicator, with its base on the bearing housing leg and its measuring end on the shaft

end or on the ground surface of the coupling hub.

• Loosen the bearing housing - motor bracket bolts (fig.25) until a clearance of about 5 to 8 mm is achieved.

• Tighten the shaft adjusting bolts (fig.25) until the dial indicator registers a 0.4mm advance.

• Tighten the bearing housing - motor bracket bolts (fig.25) to the stop, checking that no changes are registered on

the dial indicator.

• Remove the magnetic base dial indicator. Install the flexible body of the coupling pin. Install the core cover grid.

Bearing

housing

Bearing

housing

Bearing Housing -

Bearing Body Bolts

Shaft

adjustment

bolts

Graduated Laminates

Axis

Bearing body

Clock Needle

Comparator

Base Reloj

Comparador