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94MS41 Rev. C1 S/W Ver 2.06
Pump Replacement
Vacuum pump replacement is straightforward. The left-hand pump
controls the lower frame; the right-hand pump controls the upper frame.
(Left and right as viewed by the operator.)
•
Open either the left or right side cabinet door, depending on which pump
is to be replaced.
•
Disconnect the vacuum tubing from the pump. Push the outer ring on the
connector and pull the vacuum tubing out.
•
Disconnect the in-line electrical pump connection located approx. 6" from
the motor end of the pump.
•
Remove the four 1/2" nuts that secure the pump mounting plate to the
isolation mounts. Then lift the pump out of the unit.
•
Remove the mounting plate from the defective pump and install it on the
new pump.
•
Note the wire positions and remove the electrical harness from the
defective pump and install it on the new pump.
•
Install the new pump in reverse order of removal and verify the correct
operation and rotation.
Tubing/Fitting Replacement
If a vacuum line or connection is cracked, loose, leaking or broken, replace
it as soon as possible. A faulty vacuum line or connection will greatly
increase the vacuum drawdown time required, if not eliminate full vacuum
altogether. All vacuum lines are separated from the connectors by pressing
down and holding the connection outer ring while pulling the vacuum
line out. To replace the vacuum line into the connections, simply push
the line all the way into the connection.
Vacuum Gauge Replacement
See section Nose Assembly.
8-3
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