RENAULT TWINGO RS 2009 2.G Panelwork Repair Manual

41A-22
FRONT LOWER STRUCTURE
Engine stand: Description
41A
III - POSITIONING OF LOCAL ELECTRICAL
EARTHS
121247
121246
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.

41A-23
FRONT LOWER STRUCTURE
Front half unit: General description
41A
DESIGN OF THE STRUCTURAL COMPONENT
The special feature of this type of part is that it combi-
nes the functions of front side member, front wheel
arch, centre floor front side cross member and front
end side cross member, and is made up of several pa-
nels of different types and thicknesses.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 the following general information,
make sure that there are no special notes associa-
ted with the vehicle. These special notes are speci-
fied if necessary in other par ts of the sub-section
dealing with the component.
Note:
For a detailed description of a particular connec-
tion, see MR 400.
109546

41A-24
FRONT LOWER STRUCTURE
Front half unit: Description
C44
41A
Right-hand side
There is only one way of replacing this part:
-complete replacement.
I - COMPOSITION OF THE SPARE PART
Left sideRight-hand side
125411
IMPORTANT
Use a repair bench to ensure the positioning of the
points and the geometr y of the axle assemblies.
120631
No. Description Type Thic-
kness
(mm)
(1) Front side mem-
ber closure panelHEL1.4
(2) S ide member,
front sectionHEL1.5
(3) Wheel arch Mild
steel1.2
(4) Cup height adjus-
terMild
steel1.3
120630
No. Description Type Thic-
kness
(mm)
(5) S ide member,
front sectionHEL/
Mild
steel1.5
(6) Front side mem-
ber closure panelHEL1.4
(7) Wheel arch Mild
steel1.2

41A-25
FRONT LOWER STRUCTURE
Front half unit: Description
C44
41A
II - PART IN POSITION
Complete replacementIII - POSITIONING OF THE NEARBY ELECTRICAL
EARTHS
(8) Engine stand HEL/
Mild
steel2
(9) Front cup height
adjusterMild
steel1.3
120629
Note:
For more detailed information on welded connec-
tions with three thicknesses, see MR 400.
IMPORTANT
If the mating faces of the parts to be welded are not
accessible, use EGW plug welds instead of the ori-
ginal resistance welds (see MR 400) No. Description Type Thic-
kness
(mm)
121246
WARNING
To avoid damaging the vehicles electric and electro-
nic components, the earths of any wiring harness
near the weld area must be disconnected.
Position the earth of the welding machine as closely
as possible to the weld area (see MR 400).

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