Satellite Slide Tank - Manual (Page 28)

to accumulate in the moisture trap. Pay
attention to periodic cleaning because it
will increase the life of your pump.
DANGER : Stop the truck motor,
remove all persons from the truck cab, and
chock the truck tires before servicing the
vacuum pump. A truck that begins to roll is
a crushing hazard that can lead to death.
28
MAINTENANCE
DANGER : Make sure the gas
engine on your slide-in unit is shut off
before servicing the vacuum pump.
Contact with a rotating mechanism can
cause entanglement that can lead to
death.
Use the following procedure to clean your
vacuum pump:
1. Turn the gas engine off, make sure the
ignition switch is turned to off, and make
sure your pump is in the non-operating
mode.
2. Remove the vacuum relief valve from
the air line. (Figure 4.3).
3. Create a flushing fluid with a 50/50
mixture of diesel fuel and vacuum pump
oil. Place the control handle on the pump
in the vacuum mode, and then pour 1/2
pint of the flushing mixture directly into
the pump inlet.
4. Next, turn the control handle to the
neutral position to close the changeover
valve.
5. Replace the vacuum relief valve.
6. Start the gas engine and run the pump
at operating speed for about one minute.
7. Next, stop the gas engine, and then use
the control handle to switch the pump to
vacuum mode.
„
IMPORTANT : Be sure to replace the
vacuum relief valve in the inlet air line
before placing the pump in the vacuum
mode to expel the flushing fluid.
CAUTION : DO NOT position the
control handle to the pressure mode,
which would expel the fuel through the
pump inlet. Incorrectly expelling the
flushing fluid through an open inlet (without
the vacuum relief valve replaced) could
cause it to spew out at the operator.
8. Restart the gas engine, and run the
pump at operating speed for about ten
seconds, and then stop the engine.
9. After completing the above cleaning
sequence, make sure that the ignition
switch on the gas engine is in the off
position, and then rotate the driveline
slowly by pulling on the gas engine
starter rope. Listen for a clicking sound
as each rotor vane drops in its slot. If not
all of the vanes are sliding freely in the
pump rotor slots, repeat the above
procedure until they do slide freely.
DANGER: Before rotating the
driveline manually by pulling the gas
engine starter rope, make sure the
ignition switch is turned to off.
Contact with a rotating mechanism
can cause entanglement that can lead
to death.
10. After completing the pump cleaning,
pour 4 to 8 oz. of oil into the pump. This
will require that you remove and
reassemble the vacuum relief valve one
more time. At this point, use Teflon
tape, Teflon thread sealant, or any other
good quality thread sealant for the final
reassembly of the valve.
Finally, run the pump in neutral for about
a minute, and then drain the oil catch
muffler of the used flushing fluid.
Properly dispose of the used flushing
fluid. Your pump is now ready to put
back into service.
`
NOTICE : Add oil directly into the pump
after cleaning and before putting back into