Ingersoll-Rand DOSATRON D14T Series User manual

Piston Flange Kit
D14T Series Part #: PPDI034-1

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This kit is for the Dosatron D14T Series
Dosatron Hot-Water Piston Kit
Part #: PPDI034-1
Hot-Water Piston Flange Kit Contents:
PDI651U Omega Spring
PDI649-1 Connecting Rod
PDI648 Push Rod Seal
MPDI243U Upper Flange
MPDI244U Lower Flange
PDI1236 Top Locking Ring
PDI1237 Lower Locking Ring
Remember to wear proper protection when performing maintenance
such as gloves, eyewear, and apron.

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Hot-Water Piston Kit Instructions
Unscrew and remove the Bell
Housing, you may have to use a
strap wrench.
Pull the piston out of the
Dosatron injector, and set the
bell housing and body aside.
Remove the Plunger from the
Piston by twisting a quarter turn
counterclockwise, and set aside.
Locate the small notch inside
the top of the white piston shell.
This is where a tooth on the
inside of the Top Locking Ring
will secure it into place on the
white piston shell.
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Squeeze the Locking Ring
from grip points outside-edge
and turn it counterclockwise to
unlock the tooth.
Lift up the old Top Locking Ring
and Upper Flange to remove
from the Piston shell.
Flip the piston upside down and
follow steps 3 - 4 to unlock the
Lower Locking Ring.
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Lift up the old Lower Locking
Ring and Lower Flange to remove
from the Piston shell.
With the use of a at head
screwdriver, remove the upper
valves from the guide.
The valves look like golf tees.
These will drop down and out of
the piston shell. Set them aside.
Grasp the top of the white plastic
components inside the piston
shell, and pull the piston’s
mechanism up and out.
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Now you have two subassemblies,
the push rod on the right and valve
support frame on the left.
In order to disassemble the
push rod, remove the Connecting
Rod from the Omega Spring.
Now, twist the Omega Spring to
remove from push rod.
Install the NEW Omega Spring
(PDI651U) by carefully pushing
into its location on the push rod.
You will hear a small click when
secured properly.
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4
CONNECTING
ROD
OMEGA SPRING
PUSH
ROD

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Slide the other end of the
Omega Spring into the NEW
Connecting Rod (PDI649-1).
The key to this step is to make
sure the curved top of the Push
Rod faces in the same direction
as the Omega Spring.
Remove Push Rod Seal by
grasping and twist a quarter of
a turn counterclockwise.
Carefully slide the NEW Push
Rod Seal (PDI648) onto the
push rod as far as it will go,
then twist it clockwise a quarter
of a turn to lock in place.
Install the NEW Upper Piston
Flange (MPDI243U), with the
larger end facing down, by
carefully pressing it onto the
upper ange mounting area as
far as it goes.
NOTE: Be careful not to press
down too hard as it can damage
the ange.
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OMEGA SPRING
CONNECTING
ROD
PUSH
ROD
PUSH
ROD SEAL

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To install the NEW Top Locking
Ring (PDI1236) locate the small
tooth on the inner diameter of the
ring, and align the tooth on the Top
Locking Ring with the notch on top
of the piston shell.
Press down the Locking
Ring and turn clockwise
until the tooth locks into
the notch on the shell.
Flip the piston shell over and
repeat step 15 - 16 to install the
NEW Lower Piston Flange
(MPDI244U) and Lower
Locking Ring (PDI1237).
Before reinstalling the push rod
and valve support assembly, look
inside the piston shell. You will
notice four holes in a line and a
single hole on the other side.
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The valve support frame will
align on the side with the four
holes, making sure it goes into
the grooves.
To demonstrate the alignment of
the push rod assembly, the
curved top would be facing
inward, inserting the push rod
into the single hole at the bottom
of the piston shell.
This is where the connecting rod
sits in the piston. The key is to
make sure the grey connecting
rod drops into the notches inside
the piston shell.
To insert both the valve support
frame and the push rod into the
piston shell, use your index
nger to push on the spring.
This will set everything into
place, and you will hear a click.
If the parts aren’t tting together,
just lift both assemblies out and
try again.
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VALVE
SUPPORT
FRAME

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Insert the upper valves through
the bottom of the top area,
and snap them into the valve
support frame.
To test the piston, pull the push rod
up then push down a few times, it
should click in both
directions.
Reinstall the plunger into
the bottom of the piston shell
and twist a quarter turn
clockwise to lock into place.
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