TIBU721900

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Technical Information Bulletin
Certain CT660 Trucks with Manual Transmissions Have Been Disengaging Out of Select
Gears{7000}
Media Number -TIBU7219-00
Publication Date -26/08/2013
Date Updated -26/08/2013
Caterpillar: Confidential Yellow
i05423566
Certain CT660 Trucks with Manual Transmissions Have Been
Disengaging Out of Select Gears{7000}
SMCS - 7000
On Highway Truck:
CT660 (S/N: TGA1-82; TGD1-5; TRK100-1565; TKL100-599; TEP1-100; TJS99-100;
TGT100-107; TSW99-100; TSY100-143)
Introduction
The problem that is identified does not have a known permanent solution. Until a permanent solution
is known, use the solution that is identified below.
Problem
Certain CT660 trucks with manual transmissions have been popping out of select gears. The popping
out of gear is caused by the shift tower experiencing interference with the lower shift boot. This
problem affects trucks that were built before April 30th, 2013. This problem affects the following
CT660 trucks:
• (S/N: TEP1-100)
• (S/N: TGA1-82)
• (S/N: TGD1-5)
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Advanced Full Text Search - TIBU7219 - Certain CT660 Trucks with Manual Transmissi... Page 2 of 2
• (S/N: TGT100-107)
• (S/N: TJS99-100)
• (S/N: TKL100-599)
• (S/N: TRK100-1565)
• (S/N: TSW99-100)
• (S/N: TSY100-143)
Solution
In order to prevent interference between the shift tower and the lower shifter boot, trim the lower
shifter boot using scissors or a knife to make a hole that is three inch in diameter, centered on the
shifter bar when the shifter bar is in the neutral position.
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Fri Sep 6 13:08:01 CDT 2013
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