F 150 2WD Pickup V8-4.6L CNG SOHC VIN 9 (1997)
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transmission crossmember bolts
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spring tower bolts
4. Inspect the Frame Rivets
Inspect all riveted frame and suspension components in the general area of the noise for loose or improperly seated rivets.
NOTE:
TAP THE RIVETS WITH A SMALL HAMMER. WHEN A RIVET IS NOT INSTALLED PROPERLY IT WILL MAKE A DIFFERENT SOUND
THAN A "SNUG" RIVET.
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Service identified rivets according to the procedure listed in the Repair Procedure section.
5. Test Drive the Vehicle
Road test the vehicle again to duplicate the concern. If the noise is still present. proceed to the next Step.
6. Test Joints to Locate Noise
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Use a small pry bar as a "wedge" between components suspected of causing the noise. By pounding the wedge into a joint or behind a bracket
the noise should change or be eliminated if the noise is coming from that location.
NOTE:
USING A STETHOSCOPE, OR CHASSIS EARS, WILL HELP TO IDENTIFY ANY NOISE CHANGE.
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If the source of the noise is identified, proceed to the Repair Procedure section.
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If the source of the noise has not been identified by this Step, investigate other non-frame or suspension sources and/or proceed to the next
Step.
7. Service the Vehicle
a. If the noise has been identified, proceed to the specific component section in the Repair Procedure.
b. If the noise source has not been identified, refer to Figure 9 for general noise locations, operating conditions and number of occurrences.
Proceed with repairing the identified components.
(A) "Huck Fastener"
Lower Left Front # 1 Crossmember Rivet Replacement
This procedure should be done on flat ground or on a drive-on lift, with the wheels pointed straight and full weight resting on the wheels. This fastener
could be either a standard cold head rivet in light duty applications or a large "huck" bolt which has the appearance of a large "pop" rivet.
NOTE:
USE WARRANTY DEALER CODING: 5020, AS BASIC PART NO.
1.
Remove damaged or loose rivet:
COLD HEAD RIVETS:
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Drill a 3.175 mm (1/8") hole through the rivet.
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Redrill the same hole through the shank of the rivet with a 9.525 mm (3/8") drill.
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Remove the rivet head with an air chisel.
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Drive out the rivet with a punch and hammer.
"HUCK" RIVETS:
