Penlon EMO Service Manual

Table of contents:

- Special Tools

- Disassembling Mixing Chamber

- Assembling Mixing Chamber

- Adjustment Rotor / Level Indicator Unit

- Temperature Compensating Unit

- Filler Unit

- Leakage Test

- Closing Mechanism (Release Valve)

EMO

Service Instruction

created by Frank Weithöner

Special Tools

Before starting make sure that all
tools are available. Besides a set of
normal blade screw drivers you will
need some special tools.

1. For opening the EMO:
Allen key 3/32'' (or 2.3mm)

2. For leakage test:
Pressure gauge with plugs

3. Special EMO tools:

- Setting gauge

- Tool for taking out springs

- Tool for taking out the rotor

- Tool for taking out the filler

- Tool for rotor counter nut

- Tool for taking out the filler

4. Alcohol, Vaseline

Here the special EMO tools:

For calibration a setting gauge is
needed. It is a simple piece of bent
metal with a diameter of 2.5mm.
An allen key of the same size also
works fine.

(down the original tool)

For turning the springs out of the
pointer such a tool helps you a lot.
It is an old screw driver (diameter
3mm) with a slit.
If you are experienced you can try
to turn out the springs with strong
forceps. In my opinion it is faster
and easier to build such a tool than
getting out the springs with
forceps.

For holding the counter nut of the
rotor while adjusting you need a
socket with a handle. It's a nice tool
but not really necessary. You also
can hold a simple 8mm socket with
pliers.

This tool helps you to lift out the
rotor. Unfortunately it is difficult to
make and does not work so well.

By now I have no idea how to
create a better tool. Maybe you
have an idea...

The inner diameter is 28mm.
To grab into the notches of the
rotor shaft there must be at least
one nose. In this case it is a 5mm
bolt placed half in the ring.

This a tool for taking out the filler
unit.
It is difficult to make (and to
describe) but you will need it only if
you really want to take out the
filler...

Do you really want to take out the
filler and build it?
Here are the measurements:

Take a 1" pipe (4 mm strong) and
saw a 9mm cut. Now you need 2
little noses with a hight of
approximately 1.5mm. The easiest
way to take material from the pipe
is with a file and leaving the two
noses blank.

The handle is not important but of
course it must be higher than the
filler.

Disassembling Mixing Chamber

Step 1

Clean the whole unit to make sure
that no dirt gets inside while
working with the open unit.

Ether would be perfect, but alcohol
also works.

Step 2

Remove the handle on top.
(2 screws)

Step 3

Remove cover.
(2 screws)

Step 4

Lift out the spring.

Step 5

DO NOT TOUCH THE 3 SCREWS.

Step 6

Remove the screw of the pointer.

It is only a cover screw and hides
an allen key screw which you have
to remove later.

Step 7

Remove the 3 springs. A special
tool is needed.
See Tool Section.

Even with the special tool it is a
very tricky procedure.
Because there is no thread you
have to turn the springs anti-
clockwise to reduce their
diameters while pulling them out.
That sounds easier than it is...

Step 8

Now the pointer turns free, but the
rotor is still attached.
Turn the lever now to 6%.
Now through the hole of the lever
an allen key screw appears (3/32'').
Remove the screw.

Step 9

Remove the lid.
(8 screws)

Don't forget the screw in the centre
under the lever.