Navajo 4WD V6-4.0L OHV (1991)
Heat Shield: All Technical Service Bulletins
Exhaust - Buzzing or Rattling Noise
Bulletin No. 023/92
Issued
7/10/92
Revised
Category
F
Applicable Model/s
1991-'92 Navajo
Subject
HEAT SHIELDS RATTLING
DESCRIPTION
During normal driving conditions or during idle, a "buzzing" or "rattling" noise maybe heard coming from the exhaust system. This noise may be caused
by a loose heat shield attached to the muffler or catalyst.
INSPECTION & REPAIR PROCEDURE
If the above symptom is experienced, worm clamps should be installed to secure the heat shield to a muffler or catalyst. Refer to the following procedure
for details.
1.
Install two (2) worm clamps (ZZL0 13 458) to the catalyst or muffler as shown in Figure 1.
2.
Align the clamps to secure the heat shield to the muffler or catalyst.
3.
Tighten the clamps to no more than 6.8 N-m (60 in.lb.).
4.
Trim the excess "ear" of the clamp to 2.5 cm (1 in.).
PARTS INFORMATION
WARRANTY INFORMATION
(Applies to vehicles covered under warranty.)