2008 GEELY MK Light

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Page 374 of 416

GEELY MK 2008 Workshop Manual 1. Front cross beam assembly
The front cross beam assembly includes front cross beam left/right support assembly, front cross beam sub-
assembly, front cross beam side support etc. They play a

Page 390 of 416

GEELY MK 2008 Workshop Manual The cave-in is mainly caused by collision and extrusion. For the light cave-in damage, the metal doesnt extend,
which is plastic deformation. If the collision or extrusion is serious, the metal

The cave-in is mainly caused by collision and extrusion. For the light cave-in damage, the metal doesn't extend,
which is plastic deformation. If the collision or extrusion is serious, the metal plate will rupture. For the vehicles
running in the city, it is common that collision damage occurs on the side wall.
d. Bend & Distortion
Bend and distortion belong to mechanical damage. Bend and distortion may have a variety of causes, such as
collision or extrusion, alternating loads generated by the vibration, accident acceleration, emergency brake, sharp
swerve and body torsion caused by poor road.
For the light distortion, it shall be confirmed by test. For the serious bend and distortion, it is obvious in the
appearance. Generally, the distortion can be fixed according to the clearance of the frames and the change of their
relative positions.
e. Unsoldering
The unsoldering is caused by the poor fusion between different metal plates.
2. Outside Plate Repair
a. Repair for Crack
(a) CO2 Welding
The crack on the metal outside plate can be repaired by CO2 welding. In the welding process, align the two
metal plates, and weld the outside crack of the plate first. If the crack doesn't exceed 50mm, the welding shall start
from the rear part of the crack and continue along the crack and edge. If the crack is a little longer, several points
shall be welded first at a certain space. After welding several points, finish them and then weld the crack block
by block. By so doing, it can prevent the metal overroasting and plate deformation caused by too high temperature.
If the crack is located in the position that burden heavy force and it is convenient to carry out the welding operation,
a double-welding method can be used. After the spot welding is made outside, carry out the welding inside. After
the inside welding is completed, make the welding outside in the same manner.
After the welding, put a sizing block inside, and beat from the outside welding line with hammer to removeFig. 5-25 Concave Body Filling Repair b. Repair for Local Damage
For the local corrosion or serious mechanical damage on the outside plate, if it can't be repaired in common
method, the patching or pasting repair method can be used.
Repair Method:
(a). Fix the patching scope;
(b). Cut the paper sample;
(c). Cut the plate as per the sample;
(d). Adhere the molded plate on the surface of the patching part;
(e). Line out the profile along the plate edge with needlepoint, and cut off the damaged or corroded part;Body Repair -Repair After Body Damage7-18the retaining stress. Finally, finish the welding
seam properly to make it even and smooth for
painting.
(b) Solder Filling
For the fine concavo-convex plate with
damage and crack on its surface, it can be re-
paired with a solder filling method. (Fig. 5-25)

Page 391 of 416

GEELY MK 2008 Workshop Manual (f). Flatten the edge with hammer or sizing block, and remove the burr with file to make sure that it is aligned
with the both side alternative plates with a clearance not more than 1mm;

(f). Flatten the edge with hammer or sizing block, and remove the burr with file to make sure that it is aligned
with the both side alternative plates with a clearance not more than 1mm;
(g). Replace the plate, and clamp it with pincers. Carry out the spot welding along the seam at a space of
approximately 50mm;
(h). Make the welding from the center to both sides alternately block by block. Which can reduce the
deformation;
(i). Strike the welding line with the hammer or sizing block to remove the retaining stress. Polish the welding
lien wit the file or manual grinding wheel to make it even and smooth for the painting.
c. Repair for Accidented Damage
(a). Plate work flattening
When the accidented damage occurs on the plate work of the body, it can be repaired by means of beating.
In the repair process, start from Point C as shown in Fig. 5-26. Put the sizing block on the convex point, and beat
it with the hammer and change the block's position correspondingly. When the convex point is flattened, the
concaved part in Point B will rise. Similar wit the original profile of the plate, for the remaining dent, a sizing block
with the same radian can be employed. Press the bottom of the plate with hand, and beat the high point of the dent
with the hammer. (Fig. 5-27)Fig. 5-27 Plate Work Flattening (II)
A. Hammer B. Plate work
C. Sizing block Fig. 5-26 Plate Work Flattening (I)
A. Impact point B. Concaved point after impact
C. Convex point after impactFig. 5-28 Heating & Planishing
Convex Point
1. Heating pointBody Repair -Repair After Body Damage7-19 In the beating process, beat the work piece heavily at the beginning and lightly at the end. Attention shall
be paid to reduce the number of beating as possible as it can. Don't beat the same points repeatedly to prevent the
metal plate extending locally, which can complicate the repair work.
For the larger arc concave, a sizing block can be used under the center of the concave. The area of the sizing
block shall be a little larger. Jack the concaved plate up with a supporting tool. Sometime, heat the concaved part
to wine color to reduce the force. When jacking the plate up, a little excess is acceptable. (Fig. 5-28)
(b) Thermal contraction
When the concave is jacked up, if the plate extends seriously and the area is large, the thermal contraction
method can be used in case that the traditional methods don't work. (Fig. 5-29)
Heat the work piece to cerise color with oxyacetylene flame. The heating scope depends on the degree of extension.
If the extension is serious or the area is large, the heating point shall be larger relatively (diameter: approx.20-
30mm). If the extension is not serious or the area is small, the heating point shall be a little smaller (diameter:
approx.10-15mm). After the heating, beat the heating point immediately. In the beating process, a proper sizing
block is used under the plate. After it is cooled down, beat it lightly with the hammer.
The contraction starts from the highest point to the center, and then to the edge. Heat and flatten the extended
part repeatedly till the plate is flattened fully. If the convex part is too high, compress it to one half of the original
height. After it is cooled down, heat it at the original heating point till the other half of convex part is removed.

Page 408 of 416

GEELY MK 2008 Workshop Manual Section 6 Service Data For for BodyI. Technical Repair Data (Table 5-1)Item (Clearance)
Front fender and side wall outside plate
Front fender and front door outside plate
Side wall outside plate and

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