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Installation Instructions
7
Troubleshooting Tips
If the air horn does not produce any sound or is low in volume, check the
following:
1) Check to see if the 20A fuse has blown.
2) Check the air hose for kinks that could impede air flow.
3) Check the wiring for broken or frayed wires. Check the compressor with a DC
volt meter. Make sure there is 12 volts across the two compressor terminals
while the horn button is being pushed.
4) Check the horn diaphragm. Remove the 5 phillips head screws on the
horn end cap and remove the plastic diaphragm. Inspect the diaphragm
for contamination. If there is dirt or oil on it, clean with a soft dry cloth and
re-install. In the unlikely event that the diaphragm is torn, call AFI customer
service for replacement part #20147.
5) Check compressor lubrication. If the compressor has not been lubricated on
a regular basis (every 4-5 months) it could lose air volume. Lubricate as per
instruction #4 under “Mounting The Compressor”.
6) It is very important that when lubricating the compressor, the oil is allowed
to settle and the compressor is activated BEFORE re-attaching the air hose.
Failure to do this may result in oil being blown onto the diaphragm and
contaminating it.
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