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 3  

III. Installing Your Air Tank 

Locate a secure area close to your air compressor to mount your air tank.  The leader hose of the compressor 
should be able to reach an available port on the air tank with some slack. 

1.

 

Position the tank in its desired location and secure it using standard mounting hardware. 

 

IV. Installing Your Air Tubing & Air Valve 

Before cutting any air tubing make sure to double check your measurements.  We recommend cutting your 
lengths with at least an extra inch per line just to be safe.  The Push-To-Connect compression fittings are 

reusable but reuse should be kept to a minimum to avoid damage.  When threading any fittings make sure to use 
Teflon tape or lock-tight to prevent air leaks. 
The air valve may be mounted in any direction but it is preferred that it is mounted vertically. 

 
IMPORTANT: Do not rotate or remove the inline check valve in the compressor’s leader hose.  Doing so will 

damage its seals and will result in damage to your air compressor and voiding of your warranty. 

IMPORTANT: Do not make any kinks in your air line.  Doing so will disrupt air flow and is irreversible. 
 
Air Compressor to Tank: 

[Air Compressor] » [1/4” Leader Hose] » [1/2 to 1/4 NPT Reducer Bushing] » [1/2 NPT F Port] » [Air Tank] 
1.

 

Locate a free 1/2 NPT port on your air tank and install a 1/2 to 1/4 NPT reducer bushing using Teflon tape 

across the threads. 

2.

 

Carefully connect the air compressor leader hose to reducer bushing using Teflon tape on the threading.  

When installing the leader hose DO NOT move the inline check valve located just above the swivel fitting. 

3.

 

Locate a secure location to mount the leader hose using the bracket provided.  Avoid locations where the 

leader hose may become tangled with wires and other hoses. 

a.

 

When mounting the bracket drill a hole with a 3/16” drill bit and push the self-anchoring hose 
bracket into the hole.  Route the leader hose through the hose bracket and secure by pressing the 

bracket clamp into the locker position. 

 

Pressure Switch in to Tank: 

[Air Tank] » [1/2 NPT to 1/8 NPT Reducer Bushing] » [Pressure Switch Unit] 

1.

 

Install the 1/2 to 1/8 NPT reducing bushing into an available port on the air tank using Teflon tape on the 
threading. 

2.

 

Install the pressure switch unit into the reducer bushing again using Teflon tape on the threading. 

 
Air Horns to Tank: 

[Air Tank] » [1/2 to 1/2 NPT Nipple] » [Air Valve] » [1/2” Push-To-Connect Fitting »  

[1/2” Air Line] » [1/2” Push-To-Connect Fitting] » [K3 Manifold] 

1.

 

Plan out the fittings’ placement out before you begin and make sure you understand the correct order. 

2.

 

Make sure that your tank is empty of air and that the compressor is not running during installation. 

3.

 

Start off by installing the 1/2 to 1/2 NPT nipple fitting in to the side of your air tank using Teflon tape or a 
locking compound on its threads. 

4.

 

Next install the 1/2” air valve on to exposed side of the 1/2 to 1/2 NPT nipple using Teflon tape or a 
locking compound again.  Make sure that the arrow on the valve points from the tank outwards towards 
where you will connect your horns.  The tank side of the valve should be marked Inlet, the other Outlet. 

5.

 

Next install Push-To-Connect fittings in the open side of your valve and in the horn manifold again using 
Teflon tape or a locking compound on the threads. 

6.

 

Now you can run air line from your horn manifold to the air tank and cut the length required.  Make sure 
the cut end is flat and the cut is completely perpendicular to the tubing length. 

7.

 

Install the air line carefully between the horns and the air valve making sure not to damage the Push-To-
Connect fittings. 

 
Drain Cock in Tank: 

1.

 

Install the drain cock in the 1/4 NPT port on your air tank.  If the drain cock has compound on its threads 

it is unnecessary to use Teflon tape on the threads. 

 

Extra Ports in Tank: 

1.

 

Install the supplied three 1/2 NPT plugs in the remaining 1/2 NPT ports using Teflon tape on the threads. 

Summary of Contents for AH-K3

Page 1: ...HORNBLASTERS Nathan AirChime K3 Train Horn Kit Installation Manual...

Page 2: ...To prevent injury Never allow children to operate the compressor or air horn Use close supervision when operating this equipment near children The air compressor will become very HOT during and immedi...

Page 3: ...ngs 7 8 Wrench 1 2 NPT Fittings 8mm Wrench or Socket Air Compressor Mounting 16mm Wrench Metric 1 4 NPT Fittings 22mm Wrench Metric 1 2 NPT Fittings Drill Wire Cutter Stripper Tubing Cutter Razor Eye...

Page 4: ...t into the hole Route the leader hose through the hose bracket and secure by pressing the bracket clamp into the locker position Pressure Switch in to Tank Air Tank 1 2 NPT to 1 8 NPT Reducer Bushing...

Page 5: ...ed battery to your switch any side 2 Next wire your switch to any pole red preferred of your air valve 3 Wire the other side black preferred of the air valve to ground 4 Test your circuit by activatin...

Page 6: ...ngs are worn between horn bells and manifold 1 If you have performed maintenance make sure bells are seated flush and new O rings were installed 2 Allow your air system to refill before use 3 Replace...

Page 7: ...Do you have any comments or tips about the installation o Anything else you want to tell us We appreciate your feedback Optionally include a little personal information o Your name if you would like y...

Page 8: ...8 Fax 1 813 783 2407 email support hornblasters com 5 Gallon Nathan AirChime K3 Installation Diagram Ignition Wire Run this wire to an ignition wire this is a wire that is only powered when the key is...

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