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Your purchase of a WOLO TORNADO Air Tank & Compressor is a perfect choice to power your high-pressure 

air horns, tools and accessories. The Wolo name, with more than thirty years of experience, is your guarantee 

of a superior horn product. If you need help installing this product, our technicians are available to answer your 

questions, Monday through Friday from 9 AM to 4 PM EST by calling 1-888-550-HORN (4676).

IMPORTANT: The compressor comes pre-mounted 

to the air storage tank. The installer has the option to 

separate the compressor from the tank and mount it 

independently. 

INDEPENDENT COMPRESSOR / TANK MOUNTING

(Fig. 1):

1.  If the method of mounting the compressor is to be 

independent of the tank, remove the four screws that 

secure the compressor to the tank, then disconnect 

the braided hose from the tank. You will now be able 

to separate the compressor from the tank.

COMPRESSOR and TANK INSTALLATION (Fig. 2):

IMPORTANT! When selecting a mounting location for 

the compressor, make sure that the compressor’s 

braided hose will be close enough to the tank’s inlet 

connection.

COMPRESSOR INSTALLATION (Fig. 2A):

2.  Locate a convenient location to mount the 

compressor that will be dry. If the location 

is the engine compartment make sure 

the compressor is safe from the heat of 

the exhaust manifold and try to mount 

compressor as far to the front of vehicle as 

possible to provide optimum airflow around 

compressor. IMPORTANT! Do not mount 

on a plastic fender well, or on flexible 

material.

3.  Using the compressor’s mounting base as 

a template, mark the hole locations and 

drill to size, use a 3/16” drill bit. Secure the 

compressor to the mounting surface using 

the hardware provided. (Fig. 2A)

TANK INSTALLATION (Fig. 2B):

4.  The mounting location for the tank should 

be easily reachable so that the tank 

can be periodically serviced, draining 

condensation, water from the petcock 

located on the bottom of the tank.

5.  Use the tank’s mounting bracket as a 

template, mark the hole locations and drill 

to size 15/64”. Secure tank with hardware 

provided.

Installation Instructions for

Model 858 TORNADO AIR TANK & COMPRESSOR

Fig. 1

Fig. 2

Remove 

the four 

screws

Make sure 

that the 

locations 

of the 

compressor 

and the tank 

will be close 

enough to 

allow the  

braided hose 

to connect to 

tank’s inlet

Tank’s 

outlet  

connection

Tank’s inlet 

connection

Fig. 2B

Use the tank’s mounting base 

as a template to mark the 

15/64” holes for drilling

Fig. 2A

Use the compressor’s mounting 

base as a template to mark the 

3/16” holes for drilling

The braided 

hose can be 

disconnected

if it will aid in 

the installation

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