i-350 L5-3.5L (2006)
Antenna Mast: Technical Service Bulletins
Audio System - Difficult to Install Antenna Mast
Bulletin No.: IB07-13-S004
Issue Date: JULY 2007
Difficult To Install Fixed Radio Antenna Mast
This Bulletin Supercedes IB07-13-S001.
Affected Vehicles:
2006-2008 Isuzu Ascender
2007-2008 Isuzu i-290/i-370 (TI)
2006 Isuzu i-280/i-350 (TI)
Service Information
This bulletin is being revised to update model years.
Install the correct antenna mast. DO NOT replace the antenna base.
A design change was made to the antenna base and antenna mast starting in October 2005. The radio antenna base size increased from 6 mm (0.23 in) to
7 mm (0.27 in) for improved stability and radio reception.
There are two different design antenna masts available. The antenna masts can be distinguished by the outer bottom of the antenna mast. The first design
antenna mast (1) will have a six-sided hex design and a 6 mm (0.23 in) inside diameter thread. The second design antenna mast (2) will have two flats on
the outer mast and a 7 mm (0.27 in) inside diameter thread.
The second design antenna mast will have more resistance when installing due to the interference fit of the threads. A wrench will be needed to install the
antenna mast.
IMPORTANT:
Use a protective tape or a cloth inside an adjustable wrench when installing the mast. This will help prevent damage to the painted coating on the
mast.
Tighten the antenna mast.
Tighten
Tighten to 6 Nm (53 lb in).
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