Chery QQ Service Manual Body System
2)Not knocking the beam pad with hammer. This method means put the beam pad under the
lowest place of the hollowness, knock the nearby place with hammer.
Generally speaking, while trimming the hollowness with hammer and beam pad ,the protruding
side shall be knocked by the hammer, the other side shall be gasket ,you can make rough shaping
with wooden hammer then make fine trimming with iron hammer.(see figure 7).In the case of
hollowness with much bigger area, beam pad shall be put in the more shallow position of the
hollowness, the hammer shall knock the much higher position of the protruding, iron hammer
and wooden hammer shall be used alternately accordingly.
(2)Trim the hollowness with jimmy. jimmy can be self-made according to characteristic of the
vehicle body, they are handwork tool in common use for door maintenance. can be used to put
into the limited space of sandwich position of doors and lids ,it can prize open the hollowness,
this kind of method can be applicable to the hollowness which is not easy for spacer and hammer
to reach because of the narrow sandwich position of doors and lids, can be also used as the
spacer to make the hitting power of the hammer spread in much larger area.
(3)Trim the hollowness with puller. puller can be used to trim the shallow hollowness which is
difficult for other tools to touch upon, it is can be used inside the metal plank. There are two
operating methods of puller in common use.
One is boring method. That means to drill a small hole in the hollowness with portable electric
drill, then insert the withdrawal lever of thread summit or hook summit in the hole, draw the
hollowness slowly through inertia hammer sliding on the metal withdrawal lever and colliding
the handle repeatedly. You can drill more holes when necessary, fill and smooth the holes with
tin-lead bonding after the hollowness is flattened.
The other method is electrode welding.That means welding the stud nail or spacer on the
hollowness with special use spot welder, then pull the stud nail or spacer outwards
withpuller,until the hollowness is flattened. You can weld more nails and spacer accordingly, pull
the whole hollowness gradually. Finally, polish the welded mark and smooth it with grinder. This
kind of method avoids making holes in the metal plank; eliminate the potential corrosion of
metal.
2.2.2 Recovery of stretchable position
It happens frequently that sheet metal of the hollowness is stretched after being collided. It is not
sure that the stretchable position can be recovered completely using the correct operational
method during trimming process ,therefore, it is necessary for you to combine with heating
contraction method to achieve the goal of trimming.
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Chery Automobile Co., Ltd
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