Chery T11 Service Manual
Body and Accessories
-50-
part with the cut.
(6) Weld the joint with gas welding or CO2 gas protection welding. Carry out spot welding in
the span of 3050mm firstly, weld again when it is levelled by striking. For welding line with
higher requirement on strength, it shall be welded on both sides.
(7) Hammer the completed welding line with flat hammer to eliminate welding stress, then have
it shaped and polished by sand grinder.
4. Fold Repair
Based on the damage extent of metal work, fold can be divided into “live fold’’ and “dead fold’’.
“Live fold’’ is of lamp fold which can be eliminated by direct hammering on the most protruding
ridge. “Dead fold’’ is of flod with serious damage. As the folded parts are squeezed together, direct
hammering on the most protruding ridge may get the flod even worse. This is why it is called as
“dead fold’’. The principle to correct flod is to release “dead fold’’ firstly by gradually converting
it into “live flod’’, then convert the “live fold’’ into sunken or protruding, and have it repaired
according to the method for sunken repairing. The steps for repairing are as follows:
(1) Adopte the method of support and pull to apply a corrective force in the opposite of striking
force on the fold of metal work to spread or revive the fold.
(2) Dismantle the metal work with fold damage from the platform. Starting from the inner side of
the fold area, prize up and heat the “dead fold’’ with proper tommy bar and torch gun at the same
time. Revive the “dead fold’’through repeated heating and prizing up. Finally convert all “dead
folds’’ into “live folds’’.
(3) Beat out “live fold’’ from the inner side of the fold area. The hammer shall be fallen the most
protruding ridge. Meanwhile, please note that each beat must be supported by the platform. After
one side of the fold is roughly levelled, turn to the other side till all folds are fully spreaded.
(4) Measure with the sample, heat and strike the sunkin and protruding places to restore the
original shape roughly.
(5) After trial assembly onto the vehicle, check by sample again to make further fine correction,
and finally to achieve the requriement.
(6) Fold with partial serious damage which can’t be repaired can be mended by replacing.
Ⅲ Welding of Doors and Bonnets
For welding on doors and bonnets, the following welding methods can be selected flexibly: gas
weld (oxygen acetylene weld), CO2 gas protection weld, manual arc welding, resistence spot
welding, brazing welding and so on. Moreover, in order to maintain the original strength and
durability of the body, welding method used for the manufacture of the door and cover shall be
adopted as far as possible, and the size and type of welding joint shall be similar with the one
adopted in original manufacturer.
In the quality of appearance, the welding spot shall be free from any defect such as burn down,
half welding, crack as well as large quantity of burrs, the surface shall be level and pretty without
obvious distortion or deformation, and the depth of impress shall be less than 1/5 of the thickness
of the plate; Whether the strength of the welding spot is enough or not, non-destructive test can be
carried out by flat shovel and iron hammer, where flat shovel is used to check for any seal off
between welding spots firstly, then strike by iron hammer to restore the original state; The welding
joint shall be free from any splash, tidy and free from any defect such as undercut, overlap, weld
penetration on the surface.