Mitsubishi MOTORS Lancer Evolution 2008, Body Repair Manual

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BODY REPAIR
TSB Revision
BASE OF BODY REPAIR 9-28
FRAME STRAIGHTENING NOTES
•
For safety, no one must be standing in the direction of the
pull.
•
Wires or chains should be used for protection in the event
of an accident.
•
For frame straightening of body with frame, care should be
taken regarding the position (body mount) of installation to
the frame. The reason for this is that usually mounting rub-
ber pieces are used at the installation part in order to
improve vibration prevention, and these mounting rubber
pieces might be deformed if there is a deviation of the
installation position.
•
If the part to be pulled is made of high-tensile steel (which
has a higher tensional strength and yield point than ordinary
steel), the pulling must be done with care in order to avoid
"over pull" and "spring back". It is particularly important for
the pulling of sidemembers and other reinforcement compo-
nents made of high-tensile steel that the pulling not be all
done at one time; pull gradually while using a hammer to
repair distorted areas as the pulling is done.
FRAME REPAIR PROCEDURES
M4090014000047
The frame is subjected to the following types of
loads.
•
Vertical loads: Vertical loads may occur either
while stopped or during travel.
•
Lateral (horizontal) loads: This type of loads
occurs during turning, start-off and braking.
•
Torsional loads: Torsional loads occur while trav-
eling on roads with poor surface conditions.
These various types of loads are compounded under
various conditions, and are applied to the frame.
As a result, it is important, before attempting to repair
the frame, to carefully observe the shape of the dam-
aged part and to in that way fully understand the
cause of the damage.
CHECKING FOR FRAME CRACKING OR
FLAKING
Check, by using a test hammer, for flaking or cracking of the
welded surface of the sidemembers, crossmembers and brack-
ets.
REPAIRING CRACKS
If the check reveals a crack(s) in the frame, repair as described
bellow.
AB200103AD
Wires for
protection
AB200127AD
Test hammer
Sidemember