.STEP B·9 CONTINUED
Remove
the module
as
follows:
a.
Unscrew
and
remove the lower
screws
and
washers
that attach the module
to
the coupling housing
(11)
(see
Figure 5-2).
b.
WARNING: ESPECIALLY FOR THE
HEAVIER
PUMPS
(D30A
AND
D60A),
BE
SURE TO
SUPPORT
THE MODULE WHEN REMOVING THE
SCREWS.
OTHERWISE, THE MODULE
MAY
FALL
RESULTING IN DAMAGE
OR
INJURY.
While supporting the module, unscrew
and
remove
the remaining upper
screws
and
washers.
c.
Pull the module straight back
and
away
from the coupling housing (11).
B·10
Clean
the
large
flat
seal
(13) from the coupling housing (11) and/or
front
end
plate (44)
(see
Figure 5-2).
NOTE: A replacement gasket
is
supplied with the
gasket
set
and
module repair
kit.
5-C
DISASSEMBLING THE
MODULE
CAUTION:
USE
CARE WHEN
HANDLING
THE MODULE TO
AVOID
BENDING THE LEVER (41)
OR
CEN·
TRIFUGAL
SWITCH (39)
(see
Figures 5·3
and
5-4).
C·,
Using
a
large
pair
of
long
nose
pliers, pull the
valve
disk (67) and attached
brass
piston (68)
out
of
the intake
portion
of
the high vacuum pump cylinder (55)
(see
Figures
5·3 and -11).
ITA-4.12
Figure 5-2. Module Attached
to
Coupling Housing
(D2A
Pump Model Shown)
TRIVAC "A" Manual, Edition L
17
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