Advertisement
INJECTORS
Place the solid probe onto the injector to test and listen while the engine is running. You can hear the injector working and should also be able
to hear the fuel flow. You may also want to shut the engine off and listen to make sure that the injector is not leaking fuel past the injector
nozzles. When fuel is flowing, it will create a rushing noise in the headset. A good clean injector will make a sharp ringing clicking tone, while a
dirty injector will have a muffled clicking tone.
AIR BRAKE SYSTEM:
The receiver can help locate leaks quickly in both vacuum assisted and air brake systems. In many cases leaks can be detected from a
considerable distance. After building up full pressure (Air Brakes), a casual sweep of the vehicle from one end to the other using the receiver
can often locate the leak. Use of the headphones will also reduce noise interference from the shop. If the first sweep does not locate the leak,
trace out the entire air system piping at close range (1-2 feet) with the receiver. Once the general area of the leak has been determined, the
receiver probe is very useful to pinpoint the exact location of the leak. For effectiveness, be sure that pressure is maintained in the brake
system during the entire search. If no leaks are discovered, check the air horn, windscreen wipers and other air-actuated equipment.
Use hollow probe for this test.
TYRES:
Sweep over the tyre with the receiver and it will normally find leaks of sufficient magnitude before they cause downtime on the road.
Use the hollow probe or use the receiver open.
LEAKING VALVES:
Leaking intake valves can be checked for defects by using the receiver and headphones with the engine running. All valves should emit a very
similar sound pattern when the probe is placed on the intake manifold opposite the intake port. A suspected valve can then be positively
checked, with the engine off, by bringing that particular cylinder to full compression and placing the probe on the valve stem. The "hiss" of
escaping gas across the valve seat will be distinctly audible on the leaking valve. Using the same procedure can check exhaust valves,
however, signal intensity will be much greater. Use the solid contact probe for this test.
COOLING SYSTEM:
The presence of air in the cooling system can cause hot spots, resulting in burned liners and heads in a very short time. Since all cooling
systems are under pressure, coolant must go out in order to allow the air to get in. Aeration detection equipment gives the signal that air is in
the system, but not the location of the leak. Using the VS919 receiver in suspect areas, such as the head gasket, the water pump, and
injectors, will usually detect the exact source of the leak. The "bubbling" of air in the cooling system is very noisy and usually enables the
exact problem to be determined. All such tests should be conducted while the engine is idling. Internal leaks may also be pinpointed
immediately after shut off when internal pressure is at its highest point.
EXHAUST SYSTEMS:
With the engine idling, pulsation in the exhaust system can be detected with the receiver. Leak points normally give off much louder and
sharper sound. Headphones are essential for this
WHEEL BEARINGS:
A ball or roller bearing that is in good condition and adequately lubricated normally produces a soft "whirring" sound via the headphones. Lack
of lubrication introduces scraping sounds. Flat spots or nicks cause a grating or clicking noise, depending on the speed of the rotation and the
degree of damage. For the best results, the probe should touch the spindle while spinning the wheel. Use the solid probe. You can also use
the receiver open and just point at the suspect bearing.
DRIVE TRAIN BEARING AND GEARS:
By using the receiver with headphones, it is possible to determine which gear or bearing in a drive is faulty. This should be done by allowing
the drive train to run with the wheels off the ground. Use the receiver and headphones in combination to discover the point of greatest
noise generation. Use the solid probe for this test.
HYDRAULIC SYSTEMS:
Partially blocked or bypassing valves in high-pressure hydraulic systems can be difficult and costly to find with conventional methods. Since
hydraulic systems employ very high pressures, the intensity of the ultrasonic sound given off by an internal leak is extremely high and easily
detected by the VS919 receiver. Use the hollow or solid probe for this test.
BODY WEATHER-STRIPPING. SEALS AND TANKS:
The VS919 transmitter, placed inside a vehicle, tank or any enclosure, can easily locate leaks in weather-stripping, seals, or the structure
itself. This is extremely useful for inspecting storage tanks.
The VS919 Ultrasonic Detection kit will become one of the most valuable tools in your maintenance diagnostic and repair operation.
6. DECLARATION
Declaration of Conformity
file for this product is held by the Manufacturer and may be inspected, by a national authority, upon request by contacting Jack Sealey Ltd
Ultrasound Detection Kit Model: VS919
89/336/EEC EMC Directive
93/68/EEC Marking Directive
NOTE:
It is our policy to continually improve products and as such we reserve the right to alter data, specifications and component parts without prior notice.
IMPORTANT: No liability is accepted for incorrect use of this product.
WARRANTY: Guarantee is 12 months from purchase date, proof of which will be required for any claim.
INFORMATION: For a copy of our catalogue and latest promotions call us on 01284 757525 and leave your full name, address and postcode.
We, the sole importer into the UK, declare that the product listed here is in conformity with the following standards and directives. The construction
Sole UK Distributor
Sealey Group,
Bury St. Edmunds, Suffolk.
For Jack Sealey Ltd. Sole importer into the UK of Sealey Power Tools.
01284 757500
01284 703534
Signed by Tim Thompson
16th March 2006
www.sealey.co.uk
Web
sales@sealey.co.uk
email
VS919 - 2 - 160306
Advertisement
