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21 - 86
AUTOMATIC TRANSMISSION
•
Fig. 23 Au
ALUMINUM THREAD REPAIR
Damaged or w o r n threads i n the a l u m i n u m trans-
mission case and i n t h e valve body can be repaired
w i t h Heli-Coil or equivalent q u a l i t y t h r e a d inserts.
Essentially, repair, consists o f d r i l l i n g out the w o r n
ary Cooler
or damaged threads, t a p p i n g the hole w i t h a special
tap and i n s t a l l i n g a t h r e a d insert i n t o t h e tapped
hole. T h i s procedure r e t u r n s the hole threads t o orig-
i n a l size. H e l i - C o i l , or equivalent, tools and inserts
are r e a d i l y available f r o m most automotive parts
suppliers.
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