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Vane Pump Replacement
Spectra Service Bulletin
| Remove the front cover of the pump control module. Leave filters attached. |
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| Loosen nut on the black plastic tube. |
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| Loosen the V band clamp until pump head can be removed. |
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| Loosen the hose clamp on the inlet hose. |
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Drop the pump down and remove the coupling tang.
Remove the inlet hose by rotating the pump counterclockwise.
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To Reinstall, open the band clamp all the way. Make sure the coupling tang
is in place. Tang ends may be different width. Mate the pump flange to
the motor flange. Hold the pump firmly against the flange while lining
up the clamp. Squeeze the clamp over both flanges and hold the pump in
place while you tighten the clamp screw.
The Plastic tube nut (400 systems) should be just past hand tight. Do not over tighten.
On 700/1000 systems use two wrenches to tighten the stainless tube nut firmly.
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Spectra Vane Pumps
The vane pump is a precision device.
There are several factors that will impair service life.
- Dirty Water. It is imperative to have a 50 micron prefilter installed before the feed pump.
- Inadequate flushing. Make sure the software is up to date (A-24 or later) and
that the flushing sequence is set properly. Have a Spectra Service
technician check this at your next service interval.
- Electrolysis and galvanic corrosion will shorten the pump life. We recommend that
the pump motor be grounded to the ships bonding system or DC ground.
- In older Newport systems the 50 Micron filter is before the service valve.
Be very careful to not pull debris into the pump during a maintenance
procedure. Make sure that any chemicals are well dissolved before starting the pump.
- On long voyages it is advisable to carry a spare feed pump.
- On 400 systems Periodically check the charge level on the accumulator that
is on the feed pumps discharge side. It should be set at 60 PSI (4.2 BAR)
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| There are a number of locations on the pump motor to install a grounding wire.
Route and attach to the bonding system.
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