14-22
• Close both end of the tube by tungsten inert-gas arc welding
(TIG welding).
Welding conditions
• Welding rod: A4043 (approx. φ2 mm)
• Welding current: AC80A
• After welding, check for the following problems. If any of them
exist, repair again or replace the core.
• Undercut
• Bead crack
• Base metal crack
CAUTION
• Improper weld can lead to recurrence of coolant leakage.
Installation procedure
Installation: Upper tank, Lower tank
• With the tank installed, eliminate any clearance between the
tank and core plate by tapping with a rubber (or plastic) hammer.
CAUTION
• To prevent adhesion of foreign matter, use bare hands to in-
stall the packing and tank.
• Adjust the stopper bolt until the gap dimension shown in the il-
lustration is obtained on the attachment of .
• Following the sequence shown in the diagram, bend tabs for
caulking tank. To perform this work, since cannot be used
to caulk sides 1 and 2, use pliers with the tips wrapped in vinyl
tape.
1 to 4: Bend two tabs at the center.
5 to 8: Bend other tabs following the direction of the arrow.
• After crimping the tabs onto the tank, check for coolant leakage.
RADIATOR, OIL COOLER, INTERCOOLER AND FAN SHROUD
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