TOILET REPAIR GUIDE

CONTENTS
Porta Potti
Bellows, Inlet Tube & Flush Tube Replacement Page 1-2
Float Arm Replacement Page 3
Vent seal, Lipseal & Vent Button Replacement Page 4-5
Bellows to Piston Pump Exchange Page 6

Cassette C2/C4
Pump Replacement C2 Page 7-8
Vent Seal and Lip Seal Replacement pre 2000 Page 9-10
Bellows, Inlet Tube & Flush tube for Early C4 Page 11-12
C2 Vent Button Replacement Page 13
Flush Mechanism C2 Page 14-15
Drain Tube Page 16-17
Automatic Vent Page 18
Float Arm Replacement Page 19
Level Indicator Page 20
Flush tube Page 21
Blade Mechanism Page 22-23
Lip Seal After 2000 Page 24

Cassette C200
Blade Opener Page 25-26
Level Indicator Page 27-29
Manual Pump Page 30-31
Float Arm Page 32
Seat Hinge Pin Page 33
Lip Seal Page34
Blade Handle Page 35-36

Cassette C400
Fuse Replacement Page 37
Reed Switch Page 38
Control Panel Removal Page 39-40
Pump Replacement Page 41-43
1. 07016-07024 Inlet tube / 07862 Bellow

A.

Disassemble water tank from waste tank and, take

seat & cover off.

Cut half off the

bellow with the
B. knife and, take
the bellow out.

Note : Turn the

water tank around
C. when holding the
bellow with the
pincers.
Take the bellow off
the flush tube.
Flush tube

Take the inlet tube off the bellow and, (re)place

it on the new bellow.
D. Note: Make sure that the flapper inside inlet tube
is pointing downwards when assembled on the
new bellow.

Inlet tube Flapper

Connect bellow
E. to the flush tube
and, press it back
into the water tank.

Place seat & cover

F. back onto the water tank.

1
 2. 07031 Flush tube
For taking out the bellow see point A, B and C on the front page.
Go inside nozzle
D. with the long nose
pliers and, push it
into the water tank.

Nozzle

Bend the new flush tube into a horseshoe shape and place an
elastic band around it half way down, forcing it to remain in
E.
this position. Note : Before refitting,
remove the elastic band.

Due to the horseshoe shape of the flush tube, when refitted, the
nozzle will be guided back up towards the hole at the entrance of
the bowl.

Once in view the nozzle

F. may then be gripped with
a long nose pliers and
pulled back into the toilet
bowl through the hole.

When pulling the nozzle through the hole,

G. make sure that the small rib on the nozzle
is pulled inside the toilet bowl.

Small rib

Leaflet no. 07032/062001

2
21322 Float arm

2. Porta Potti

Float retainer
A.
Float arm

Position float arm,

view from the outside.

Magnet pointed
to the outside

For placing the new Magnet always has to

float arm, open the point to the outside of
B. blade and go with the waste tank.
your hand in the
waste tank.

Note : If the float retainer is still in the waste tank (float arm has fallen off), the new float arm can not be
assembled. Float retainer has to be taken out first. This can be done with a small flat screwdriver.
As the waste tank is welded, this can only be done through the hole in the middle.
Inside view to take the
float retainer out.
Place screwdriver
between rib and float
retainer and lift it up.

Inside view Place where float arm Press the

C. waste tank. has to be assembled float retainer
in.

Leaflet no. 21774/052001

3
1. 07102 Ventseal / 07069 Ventseal

A.

Push the ventseal Pull the ventseal

B. down, out of the out through the
inside groove. hole.

Inside groove

Hold the ventseal

in position with the
1.
C. flat screwdriver (1),
while closing the blade
slowly (2).
2.

2. 07101 Lipseal / 07143 Lipseal

A.

Pull the lipseal

B. out of the
inside groove.

Inside groove

Push the lipseal

C. into the inside
groove, and close
the blade.
Note: Top has to
be pushed in first.

4
3. 07524 Vent button / 29314-62 Vent button

A. 1 2 3
1. Seal retainer
2. Spring
3. Vent button

Go with your hand While pressing 1.

B. in the waste tank 3. the vent button,
and press the vent pull the seal
button (3). retainer loose (1).

Bring new seal 1.

C. retainer (1) and 2.
spring (2) in 3.
position and click
the vent button (3)
into the seal retainer

Leaflet no. 21283/042001

5
25817-79 / 25818-68/79 Piston pump
A. Change over from bellow to piston pump

Disassemble water tank from waste tank and, take

seat & cover off.

Cut half off the

bellow with the
knife and, take
the bellow out.

Note : Turn the

water tank around
when holding the
bellow with the
pincers. Flush tube
Take the bellow off
the flush tube.

Note : before placing Take the piston pump

the Piston Pump, please and connect it to the
remove the grey sealant flush tube.
which was used for the
bellow.

Place the piston pump

on its place and press it
back into the water tank

Leaflet no. 35305/092005 6

16374 Pump C2
Tools which are needed : 6.
A. 1. Screwdriver (crosshead)
2. Stanley knife
3. Combination pliers
4.Wire-stripper
Tissue well pliers 1.
5.Connector 2. 3. 4.
6. Hot-air gun 5.

Take tissue well and

B. tissue holder out to
get to the location of
the pump.
Tissue well Tissue holder Pump retainer

Unscrew the screw

C. on the pump retainer
and take complete pump
out of the water tank. Disconnect the
1. flush tube from
the pump.

D. 1. Pump 2. Note : Cassette toilets produced between 1987 and 1989 have
2. Pump retainer two black connectors on the white cable.
3. Shrinktube If this is the case, the white cable has to be cut above
the black connector. Both connectors have to be taken
1. off.
3.

Cut the cable just

E. above the pump with
the combination pliers.

Cut the white wire

insulation off so that
F. the blue and brown
wire stay intact and
strip the blue and
brown wire with the
wire-stripper.
connecting the wires to each other
Place the pump retainer
(blue-blue/brown-brown) with the connector pliers.
G. and shrinktube on the
new pump before

7
H. Place the shrinktube over the connected wires and
melt the shrinktube with the hot-air gun.

*Melting the shrinktube will prevent that the

connected wires will come in contact with the
water in the water tank.
Note : When melting the shrinktube make
movements from left to right so that the
shrinktube can melt gradually.

CAUTION : Make sure that the shrinktube is melted completely to the white wire insulation as
otherwise a short circuit can occur.
Also keep in mind that the shrinktube should not be touched after melting, because
of burning.

Connect flush tube back onto

I. the pump and screw the pump
back into the water tank.

Place tissue holder and

J. tissue well back into
the water tank.

Leaflet no. 21036/062001

8
 Early C2 1.
2.
20339 Ventseal 8x

Open the blade, 1a.

A.
and depress the
ventseal (1) around
Sealedge
outer coverof seal (1a).
Take the ventseal out
8x
(2).

Thinner flange Float

B. Bring new ventseal

on its place as shown.
Thinner flange has to
be on the float which is
inside the waste tank.
Depress the ventseal
through the hole,
from the outside.
Note: Make sure that
the ventseal is lying in
the middle of the hole,
when looking from the top.

Go with your hand

C.
in the waste tank and
press against the
float (ventseal will
be pressed into its place).

Outside view: Inside view: press against float

float inside waste tank

9
 Repair instruction
Description: C2 C3 C4 (produced until 15 June 2000) Lip
seal
Part number: 16175
Look for Service Centers, Point of Sale addresses and other
information on: www.thetford-europe.com
Version: V2
Date: 13/07/2006
Tools required:

Unscrew the 8 screws

A on the seal cover and, 8x
take the seal cover off.

Seal cover

Ensure the two cut outs

B on the seal face
upwards and line up with
the two centre screws
of the three positioned
on either side of the seal Cut outs
cover.

Replace the seat cover.

C
8x

13/07/2006 Description: C2 C3 C4
(produced until 15 June
2000) Lip seal
Pump, Inlet tube, Flush tube & Bellow Replacement Early C2
Lift the flush cap (1) 1.
A. up with your finger.

Push cylinder (2) down 2. 4.

B. and turn it to the left to 3.
take it out. After this,
the bellow cap (3) and
housing (4) can be taken
out.
Inlet tube (6), 8.
Inside view,
Flush tube (7) or
C. nozzle (5) has
Bellow (8) can now
to be taken out. 5. be replaced
Can be pulled
down.
6. 7.
Note : Inlet tube and Flush tube can easily be replaced by pulling of the part and press the new part on.
For replacing the Bellow see following instructions.
Bellow is fitted When placing the new Lug
into the housing bellow, hold the parts
with PTI (kind of in position as on the
kit). Depress bellow 7. photo. Lug on the housing
firmly loose (1) and has to be on the right side.
pull it out (2).

Press the bellow

6.
into the housing and,
assemble inlet tube and
flush tube.

Bring nozzle back Rib inside Turn the lug (1)

D. into the hole and
press it up (you will
on the housing,
against the lug (2)
Rib Toilet bowl
hear a click).Note : on the actual 1.
Rib on nozzle has to go Push housing Cassette toilet.
through the hole, to the in by hand 2.
inside of the toilet bowl.

Cylinder can only 2 x double rib

E. be pressed in one
way (single rib has
to face the backside
of the toilet).
single rib
11
 and turn it to the right.
F.

2. 20291-62 Flush mechanism

Lift the flush cap (1) 1.
A. up with your finger.

Flush mechanism
B. can be pulled out
by hand.

C. Inside view,
nozzle (2) has
to be taken out. 2.
Can be pulled
down.

Bring nozzle from new

D. flush mechanism back
into the hole and press
it up (you will hear Rib inside
a click). Note : Rib on Rib
nozzle has to go through
the hole, to the inside of toilet bowl
the toilet bowl.

Turn the lug (1)

E. on the housing,
1.
against the lug (2)
on the actual
Push in Cassette toilet.
by hand 2.

12
Leaflet no. 21039/052001
16176-74 Vent plug / 07524-78 Vent button
When the vent plug is
A. locked into the waste tank,
the two arrows (one on the
waste tank and one on the
vent plug) has to be pointed
to each other.

Turn the vent plug away

B. from the arrow on the
waste tank ( can only be
turned one way) and lift
it up.
Note : some force may
be needed to take the
vent plug out.

*Vent plug can now be replaced. If the vent button has to be replaced, please follow underneath
instructions.

C. Press the vent button in 2. 1. Vent plug 1.

and pull the seal retainer 2. Vent button
loose. 3. Spring
4. 4. Seal retainer

4.
2. 3.

D. Place new spring and vent button in

the vent plug and push the new seal
retainer in.
Note : Press the vent button in while
assembling the new seal retainer.

E. Place vent plug back into the waste

tank and turn the two arrows back
to each other

Leaflet no. 20278/082001

13
16379-74 Mechanism Cassette C2/C3

Materials needed
Screwdrivers :

Flat

Crosshead

A.

Flush knob

Pull the waste tank out of the Place flat screwdriver under the small Unscrew the one screw
Cassette toilet by lifting up plastic insert, which is in the middle of inside the flush knob, with
the yellow clip. the flush knob, and take it off. the crosshead screwdriver

B.
After the flush knob, the mechanism housing has to be
taken out. Note : This can only be done from the outside .

Complete flush knob

can now be taken out.

Mechanism housing which is located inside

C. the Cassette toilet with four screws (on each
corner).

When looking inside the Cassette toilet from the

outside, the mechanism is screwed to the
underside of the water tank.

14
D.
4x

Remove the four screws located on the Pull the white connector loose from the mechanism,
mechanism, allowing it to drop down. and press the connector into the new mechanism.
Note : On Cassette toilets which are
produced between 1987 and 1989,
5 screws should be removed.

E.
4x

Screw the mechanism Place flush knob back (in the same position as on the photo, see
back on its place. print on the knob) and, screw it back into the toilet with the
crosshead screwdriver.

Leaflet no. 20268/032002

15
21370 Drain tube LH C2, C4
Pull the waste tank
out of the Cassette
A. toilet by lifting up
the yellow clip.

Unscrew the bracket

B. and take it out.

Bracket

Drain tube has to be pulled out on four places :

1. In the middle (lift up and Bracket
C. pull the tube inside the 1. 2.
Cassette)
2. In the front (take tube out
of the bracket and pull the
tube over the two ribs) Two ribs

3. In the back (pull the tube Plug Note: Some force may be needed
D. over the rib) 3. to take the drain tube out
4. Pull sight glass
of plug. 4.

Sight glass

4.
Will be replaced by :
E. 1. Drain tube + clamp collar 3.
2. Blind plug 2.
* 3. Screw 1.
* 4. Linkage
* Screw and linkage only have to be used when the toilet has been
produced before November 1992. Production date can be found on the Model : C2 LH
identification label, on the bottom of the waste tank. No. : 1631862 GO 7
Code : 990706

Push drain tube (1) into the Plug

water tank and push clamp
F. collar over the tube. Place
sight glass in the plug and
press drain tube into the
1.
bracket. 1. Sight glass
Bracket

Press blind plug (2) into the

G. hole at the back.

16
 *Underneath instructions only have to be followed if the Cassette toilet has been produced before
November 1992 (see identification label). As otherwise water will stay in during winterizing,
the pump will be moved to the left side of the level indicator (from A to B).
The distance from A to B will be around 10cm. Outside view

B. A.

Take tissue well and

tissue holder out to
H. get to the location of
the pump.

Tissue well Tissue holder Pump retainer

Unscrew the screw Disconnect the

I. on the pump retainer flush tube from
and take complete pump the pump.
out of the water tank.

J. 4. 5. 3. Nr. 3 (screw) and 4 (linkage) are in the package.

Nr. 5 is the screw from the pump (see I, photo 1).

Place the linkage above the pump retainer

and screw the two together from the
K. underside upwards with screw nr.5.
Note: make sure that the linkage is
placed on the pump retainer as
positioned on the photo with nr.4 (J).

**As the screwing may need some force,

be careful for injuries on hands and
fingers.
Connect flush tube back onto
L. the pump and place the pump
on the left side of the level
indicator and screw the linkage
on the place where the pump
was assembled in the first
place. Screw nr. 3 has to be used.

Place tissue holder and

M.tissue well back into
the water tank.

17

Leaflet no. 21374/062001

 Repair instruction

Description: C2 C3 C4 C200 Automatic vent

Part number: 23722-74
Look for Service Centers, Point of Sale addresses and other
information on: www.thetford-europe.com
Version: V2
Date: 13/07/2006
Tools required: -

Holding tank
A C2/C3/C4/C200

Turn the automatic vent

B to the left and take it
out.

Place new automatic

C vent in the waste tank
and turn it to the right
to lock it in the waste
tank.

13/07/2006 Description: C2 C3 C4
C200 Automatic Vent

18
21322 Float arm

1. Cassette C2/C3/C4
Sliding cover
Float retainer
A. Float arm

Position float arm, Blade opener

view from the outside.
Float arm is always
assembled on the
opposite side of the
blade opener.
Magnet pointed
to the outside

For placing the new Magnet always has to

float arm, take sliding point to the outside of
B. cover off, open the the waste tank.
blade and go with
your hand in the
waste tank.

Note : If the float retainer is still in the waste tank (float arm has fallen off), the new float arm can not be
assembled. Float retainer has to be taken out first. This can be done with a small flat screwdriver.
As the waste tank is welded, this can only be done through the hole in the middle.
Inside view to take the
float retainer out.
Place screwdriver
between rib and float
retainer and lift it up.

Inside view Place where float arm has

C. to be assembled Press the
waste tank. float retainer
in.

19
16171-62 Level indicator
Screwdrivers :
Material needed

Crosshead
screwdriver

Replace instruction

Unscrew the 7 screws Screw the 7 screws back

Replace the level indicator
underneath the level indicator into the toilet

Leaflet 20277/032002

20
16378-62 Flush tube

Material needed

Crosshead
screwdriver

Replace instruction

A.

Tissue well Tissue holder

Take tissue well and tissue holder Unscrew the screw on the pump retainer
out to get to the location of the pump. and take complete pump out of the water tank.

B. Tissue well
Nozzle
Tissue holder
Rib inside

Toilet bowl

Disconnect the flush tube from the Place the nozzle from the new flush tube inside the
pump and, pull the nozzle (inside the water tank and press it into the hole (you have to hear a
toilet) down. click, when pressing the nozzle in). Note : Rib on
nozzle has to go through the hole, to the inside of the
toilet bowl.

C.

Connect flush tube back onto the pump and screw the Place tissue holder and tissue well
pump back into the water tank. back into the water tank.

Leaflet 21043/032002
21
 Repair instruction

Description: C2 C3 C4 C200 Blade

Part number: 23847
Look for Service Centers, Point of Sale addresses and other
information on: www.thetford-europe.com
Version: V2
Date: 13/06/2006
Tools required:

Screw cover
Remove the sliding Sliding cover
A cover.

Remove the 2 screw

covers (only C200
toilets). Note: Lever off Screw cover
gently.

Unscrew the 8 screws

B on the seal cover. 8x

Take the seal cover off.

General mechanism
C info: do NOT remove Blade
the blade arm when
changing the blade.

Pull the blade gently

out of the blade arm.
Note: the blade is
pressed into the blade
arm. Blade arm

13/06/2006 Description: C2 C3 C4 1
C200 Blade

22
 Push the blade arm a
D little bit up.

Press the new blade

gently in the hole of the
blade arm.

Open and close the

E blade a few times, to
ensure a good
operation of the
mechanism.

When placing the lip

seal on the waste tank,
the thinner flange has
to face downwards the
blade.
Thinner flange

Place the lip seal on

F the waste tank. 8x

Screw the seal cover

back onto the waste
tank.

Press both screw

G covers back on the seal Arrow
cover (only C200
toilets).

Place sliding cover

back on its place. Make
sure that the two Arrow
arrows are pointed to
each other.

13/06/2006 Description: C2 C3 C4 2
C200 Blade

23
 Repair instruction

Description: C2 C3 C4 (produced after 15 June 2000) Lip

seal
Part number: 23721
Look for Service Centers, Point of Sale addresses and other
information on: www.thetford-europe.com
Version: V2
Date: 13/07/2006
Tools required:

Remove the sliding

A Cover. Sliding cover

Unscrew the 8 screws

on the seal cover and,
take the seal cover off.

Place new lip seal

B on the waste tank.
Note: Thinner flange
has to face downwards
towards the blade.

Place the lip seal on

the waste tank. Screw cover
Thinner flange
Screw the seal cover
C back onto the waste
tank.
8x

Place sliding cover

back on its place. Make
sure that the two
arrows are pointed to
each other.

13/07/2006 Description: C2 C3 C4 1
(produced after 15 June
2000) Lip seal

24
 Repair instruction

Description: C200 blade opener HT

Part number: 2343-78
Look for Service Centres, Point of Sale addresses and other
information on: www.thetford-europe.com
Version: V1
Date: 19/01/2007
Tools required: -

C200 holding tank.

A
Note: Holding tank
is factory sealed and
can’t be opened.

Inside view.

Remove the retainer

B by pressing on both
sides.

Remove the blade

C opener by pressing
slightly on both
sides.

Pull the blade

opener out.

19/01/2007 Description: C200 blade

opener HT

25
 Replace the blade
D arm driver 1.
Position the blade 3.
arm driver on the 2.
track support (1.)

Position the pin on

the blade arm (2) in
the rail on the blade
arm driver (3).

While holding the

E blade arm driver in
position replace
the blade opener.

Replace the retainer

F while holding
the blade opener in
position.

19/01/2007 Description: C200 blade

opener HT

26
 Repair instruction

Description: C200 CW Level indicator

Part number: 23718
Look for Service Centers, Point of Sale addresses and other
information on: www.thetford-europe.com
Version: V1
Date: 29/06/2006
Tools required:

C200CW toilet.
A

Unscrew the two

B screws.

Remove with a flat

screwdriver the
bezel.

Lift up the bezel.

C

Unscrew the four

screws.

29/06/2006 Description: C200 CW

Level indicator

27
 Back view.
D

Inside view.

Remove the seal

E out of the toilet.

Move the seal

backwards.

Cut the two cables

F from the led.

Place the two

shrink tubes on the
cable and connect
the two cables and
the new led.

Squeeze the
G connectors.

Place the shrink

tubes on the
connectors.

29/06/2006 Description: C200 CW

Level indicator

28
 Melt the shrink
H tubes on the
connectors with a
blow drier. Note:
This will prevent a
short circuit.

Move the seal

forward to the led.

Replace the seal

I back into the toilet.

Replace the cable

into his position.

Screw the four

J screws back.

Pull down the

bezel. Screw the
two screws into the
bezel.

29/06/2006 Description: C200 CW

Level indicator

29
 Repair instruction

Description: C200 CW Manual pump

Part number: 23739-62
Look for Service Centers, Point of Sale addresses and other
information on: www.thetford-europe.com
Version: V1
Date: 29/06/2006
Tools required:

C200CW toilet.
A

Remove the bezel

with a flat
screwdriver.

Push up the bezel.

B

Unscrew the pump

retainer.

Take out the pump.

C

Remove tube from

vacuum breaker.

29/06/2006 Description: C200 CW

Manual pump

30
 Place tube from new
D pump on vacuum
breaker.

Mount new pump in

E water tank.

Apply PTI sealant

before replacing the
bezel (not shown on
picture).

29/06/2006 Description: C200 CW

Manual pump

31
 Repair instruction

Description: C200 Float arm HT

Part number: 23726
Look for Service Centres, Point of Sale addresses and other
information on: www.thetford-europe.com

C200 holding tank.

A See picture for
position of float arm.

Float arm

Remove the float

arm.

B Make sure the float

arm retainer is
removed.

Float arm housing.

Place the new float

C arm into the holding
tank with the magnet
side to the front.

Press the float arm

into his position till
you hear a click.

Move the float arm

D over the rib.

32
 Repair instruction

Description: C200 Hinge pin

Part number: 23707-62
Look for Service Centers, Point of Sale addresses and other
information on: www.thetford-europe.com
Version: V1
Date: 15/006/2006
Tools required:

C200 toilet.
A

Remove the seat.

Remove the hinge

B pins with a flat
screwdriver.

Replace the new

hinge pins on both
sides. Replace the
seat on the toilet.

15/06/2006 Description: C200 Hinge

pin

33
 Repair instruction

Description: C200 Lip seal Cassette

Part number: 23721

Remove the sliding Sliding cover

A Cover.

2 screw covers. Note:

Lever off gently screw
covers located on
either side of the seal
cover.

Unscrew the 8 screws

B on the seal cover and,
take the seal cover off.

When placing the lip

seal on the waste tank,
the thinner flange has
to face downwards the Thinner
Screw cover
Thinner flange
blade. flange
Place the lip seal on
C the waste tank.

Screw the seal cover

back onto the waste
tank.

Press both screw

D covers back on the seal Arrow
cover.

Place sliding cover

back on its place. Make Arrow
sure that the two
arrows are pointed to
each other.

34
 Repair instruction

Description: C200 Valve blade handle

Part number: 23713-74
Look for Service Centers, Point of Sale addresses and other
information on: www.thetford-europe.com
Version: V1
Date: 22/01/2007
Tools required:

C200 toilet.
A
Pull the waste tank
out of the Cassette toilet
by lifting up the yellow clip.

Unscrew the saddle

B bracket.

Unscrew the seal handle.

Remove the link.

C

Remove the handle and

the handle seal.

22/01/2007 Description: C200 Valve

blade handle

35
 Place the new
D handle and the
handle seal.

Place the handle and

the handle seal on
the ring inside the
toilet.

Replace the link.

E

Assemble the screw this way

into the bushing.

Assemble the handle and the

F handle seal.

Re-assemble the saddle

bracket

22/01/2007 Description: C200 Valve

blade handle

36
 Repair instruction

Description: C400 Blade fuse

Part number: 21766
Look for Service Centers, Point of Sale addresses and other
information on: www.thetford-europe.com
Version: V2
Date: 13/07/2006
Tools required: -

C400 toilet.
A Pull the waste tank
out of the Cassette
toilet by lifting up the
green clip.

Remove the
reed switch HT.

Remove the blade

B fuse.

Place the new blade

fuse back into the
reed switch HT.

Replace the reed

C switch HT.

Place waste tank

back into the toilet.

13/06/2006 Description: C400 Blade

fuse

37
 Repair instruction

Description: C400 Reed switch HT

Part number: 32316-62/32317-62
Look for Service Centers, Point of Sale addresses and other
information on: www.thetford-europe.com
Version: V1
Date: 29/06/2006
Tools required: -

C400 toilet.
A Pull the waste tank
out of the Cassette
toilet by lifting up the
green clip.

Remove the reed

switch HT.

Disconnect the reed

B switch HT carefully.

Connect the new

reed switch HT.

Place the new reed

C HT switch back into
the toilet.

Place waste tank

back into the toilet.

29/06/2006 Description: C400 Reed

switch HT

38
 Repair instruction

Description: C402 C Control panel

Part number: 32320-62
Look for Service Centers, Point of Sale addresses and other
information on: www.thetford-europe.com
Version: V2
Date: 13/07/2006
Tools required: -

C402C toilet.
A

Control panel
C402C.

Remove the handle.

B

Remove the control

panel.

Disconnect the
C connectors of the
control panel
carefully by
pushing on the clip.

connect the
connectors of the
new control panel
carefully.

13/07/2006 Description: C402 C 1

Control panel

39
 Replace the new
C control panel.

Replace the
handle.

13/07/2006 Description: C402 C

Control panel

40
 Repair instruction
Description: C402 C X Pump
Part number: 16374
Look for Service Centers, Point of Sale addresses and other information on:
www.thetford-europe.com

Version: V1

Date: 09/11/2006

Tools required:

C402 C/X toilet.

A

Remove the handle.

B

Remove the control

panel.
Remove the control
C well.

Inside view.

09/11/2006 Description: C402 C X

Pump

41
 Remove the seal
D from the control well.

Take the pump out of

the watertank.
Cut the cable just
E above the pump with
the wire stripper.

Cut the white wire

insulation off so that
the blue and brown
wire stay intact.
Strip the blue and
F brown wire with the
wire-stripper.

Place the shrink tube

on the wires from the
new pump.
Connect the wires to
G each other (blue-
blue/brown-brown) with
the connector pliers.

Place the shrink

tube on the connector
pliers.

09/11/2006 Description: C402 C X

Pump

42
 Melt the shrink tube
H with the blow drier.
Will prevent a short
circuit.

Replace the pomp.

Replace the seal
I in the control well.

Replace the control

well.
Replace the control
J panel.

Replace the handle.

09/11/2006 Description: C402 C X

Pump

43