2009 RENAULT TWINGO Panelwork Workshop Manual

41B-1
CENTRE LOWER STRUCTURE
Centre floor, side section: General description
41B
I - DESIGN OF THE STRUCTURAL COMPONENT
This is a basic part; its only function is that of centre
floor side section.II - AREA TO BE CUT FOR PARTIAL
REPLACEMENT
This cutting line (4) affects the option of partially repla-
cing the centre floor side section.
III - ASSEMBLY METHOD FOR A PARTIAL
REPLACEMENT
Only the connections which are specific to the partial
replacement by cutting are indicated.
If there are other issues regarding access to mating fa-
ces, the various replacement options are described in
the basic instructions for structural bodywork repair
(see MR 400, 40A, General Information). WARNING
The information contained in the following descri-
bes the general repair procedure for all vehicles
having the same design for this part.
Before reading this general information, check that
there are no special notes associated with this vehi-
cle. These special notes will be specified if applica-
ble in other parts of this subsection dealing with the
par t.
Note:
For a detailed description of a particular connec-
tion, (see MR 400).
110540
110541
WARNING
If the spot welds cannot be made as they were ori-
ginally using an electrical spot welding machine,
they should be replaced with plug welds after holes
have been drilled in the first panel.

41B-2
CENTRE LOWER STRUCTURE
Centre floor, side section: General description
41B
Weld line (4) on the diagram shows the partial front or
rear replacement and a weld by joggling with plug
welds at regular intervals.
110542

41B-3
CENTRE LOWER STRUCTURE
Centre floor, side section: Description
41B
The options for replacing this part are as follows:
-partial replacement of the front side section,
-partial replacement of the rear side section,
-side section replacement.
I - COMPOSITION OF THE SPARE PART
II - PART IN POSITION
1 - Partial replacement of front side section2 - Partial replacement of rear side section
3 - Side section replacement
121058
No. Description Type Thic-
kness
(mm)
(1) Centre floor Mild
steel0.95
121917
121916
121918
WARNING
If the spot welds cannot be made as they were ori-
ginally using an electrical spot welding machine,
they should be replaced with plug welds after holes
have been drilled in the first panel.

41B-4
CENTRE LOWER STRUCTURE
Centre floor, side section: Description
41B
III - POSITIONING OF LOCAL ELECTRICAL
EARTHS
121246
121250
IMPORTANT
To avoid damaging the vehicle's electric and elec-
tronic components, the battery and the earths of
any wiring harness near the weld area must be dis-
connected.
The earth of the welding machine must be placed
as close as possible to the weld area.

41B-5
CENTRE LOWER STRUCTURE
Centre floor front side cross member: General description41B
I - DESIGN OF THE STRUCTURAL COMPONENT
This is a basic part; it only fulfils the function of a centre
floor front side cross member.This is a basic part; it only fulfils the function of a centre
floor front side cross member.
There is no partial replacement for this part, the repair
bench is not required.
II - AREA TO BE CUT FOR PARTIAL
REPLACEMENT
The line (1) in the drawing shows the area in which it is
possible to carry out a partial replacement.
III - ASSEMBLY METHOD FOR A PARTIAL
REPLACEMENT
Only the connections which are specific to the partial
replacement by cutting are indicated. IMPORTANT
Use a repair bench to ensure the positioning of the
points and the geometr y of the axle assemblies.
Note:
The information contained in the following descri-
bes the general repair procedure for all vehicles
having the same design for this part.
Before reading this general information, check that
there are no special notes associated with this vehi-
cle. These special notes will be specified if applica-
ble in other parts of this subsection dealing with the
par t.
Note:
For a detailed description of a particular connec-
tion, see MR 400.
110598
120936
110599

41B-6
CENTRE LOWER STRUCTURE
Centre floor front side cross member: General description41B
If there are other issues regarding access to mating fa-
ces, the various replacement options are described in
the basic instructions for structural bodywork repair
(see MR 400).
Line (3) on the drawing shows a butt weld by conti-
nuous EGW welding.WARNING
If the mating faces of the parts to be welded are not
accessible, make EGW plug welds to replace the
original resistance welds (see MR 400).
110600

41B-7
CENTRE LOWER STRUCTURE
Centre floor front side cross member: Description
41B
There is only one way of replacing this part:
-complete replacement.
I - COMPOSITION OF THE SPARE PART
II - PART FITTEDIII - POSITIONING OF LOCAL ELECTRICAL
EARTHS
120936
No. Description Type Thic-
kness
(mm)
(1) Centre floor front
side cross mem-
berMild
steel1
120916
WARNING
If the spot welds cannot be made as they were ori-
ginally using an electrical spot welding machine,
they should be replaced with plug welds after holes
have been drilled in the first panel.
121245
IMPORTANT
To avoid damaging the vehicle's electric and elec-
tronic components, the battery and the earths of
any wiring harness near the weld area must be dis-
connected.
The earth of the welding machine must be placed
as close as possible to the weld area.

41B-8
CENTRE LOWER STRUCTURE
Front cross member under front seat: General description41B
DESIGN OF THE STRUCTURAL COMPONENT
This is a basic part; its function is to secure the front
section of the front seat and to stiffen the bodywork in
the event of a side impact.Note:
The information contained in the following descri-
bes the general repair procedure for all vehicles
having the same design for this part.
Before reading this general information, check that
there are no special notes associated with this vehi-
cle. These special notes will be specified if applica-
ble in other parts of this subsection dealing with the
par t.
Note:
For a detailed description of a particular connec-
tion, see MR 400.
110507