WOOD'S POWR-GRIP POWER TILT, Процедура

Страница: 9 / 17

TST-020 PT-AIR
– REV. 2017-246
Page 6 of 14
9) To individually test the filter, leave the ball valve
connected to the venturi pump. Connect the end of the
ball valve connected to the control valve directly to the
hose of the vacuum filter assembly.
Cap off the fitting of the filter that was connected to the
vacuum pads if it is not capped-off. See
FIGURE 5 .
10) Move the handle of the control valve to the apply
position and open the air supply valve.
11) When a sufficient level of vacuum is reached, close the
ball valve and the air supply valve.
12) Ob
serve the lifter’s vacuum gauge:

Based on the previous tests it is expected that the
vacuum level of the lifter’s vacuum gauge will start
and continue to drop, verifying that the vacuum filter
assembly does leak.

If confirmed, examine the hose connection to the
vacuum filter and the fittings for any indications of
loose connections, cracks or damage.

The twist drain plug located at the base of the filter
bowl should never be used when the filter is used on
a vacuum system.

Verify that the drain plug is tight and has not been
used. If the twist drain has been used it will need to
be removed and cleaned before reinstalling.
o
Remove the filter bowl from the filter and remove
the plastic nut that attaches the drain plug to the
filter bowl.
o
Remove the drain plug and the O-ring located in
the bottom of the filter bowl.
o
Clean out the bottom of the filter bowl where the
O-ring is located.
o
Clean the O-ring and apply a light film of rubber compatible grease.
o
Reinstall the drain plug and secure it with the retaining nut.
Note: Do not over-tighten the retaining nut; this is a plastic nut and part. It is the O-ring that
creates the seal to the bowl.
Service the filter according to the
lifter’s maintenance instructions, giving particular attention to the
O-ring located between the filter bowl and body.
Re-test the filter assembly.
If the leak continues, replace the filter.
Repair or replace any parts identified to leak and repeat the Preliminary Test.
FIGURE 5