INSTRUCTIONS FOR:
CYLINDER LEAKAGE TESTER
MODEL NO:
VSE2020.V2
1. SAFETY INSTRUCTIONS
Designed to detect a variety of common engine faults including:
Worn piston rings, worn valves, cracks in cylinder walls and
blown head gaskets. Available with either single gauge or twin
gauge manifold. Gauge(s) show % of cylinder leakage or cylinder
leakage and cylinder pressure. Suitable for use on any petrol
engine with 14, 12 or 10mm spark plugs. Supplied in carry-case
with instructions.
2. INTRODUCTION
Ensure that Health & Safety, local authority and general workshop
practice regulations are strictly adhered to when using tools.
Maintain the
equipment in good and clean condition for best and
safest performance. DO NOT use if damaged.
If required, ensure that the vehicle to be worked on is adequately
supported with axle stands, ramps and chocks.
WARNING!
Select neutral (or ‘park’ if automatic transmission)
and keep hands clear of the engine as engine rotation may occur
when using this tool.
The ignition MUST BE turned off.
WARNING!
Turn regulator knob fully anti-clockwise before
connecting to compressed air.
Excess pressure will damage the gauge and will invalidate the
warranty.
Wear approved eye protection. A full range of personal safety
equipment is available from your Sealey dealer.
Wear suitable clothing to avoid snagging. Do not wear jewellery
and tie back long hair.
Account for all tools and parts being used and do not leave them
in, on or near the engine.
IMPORTANT:
Refer to the vehicle manufacturer’s service
instructions, or proprietary manual, to establish the current
procedure and data. These instructions are provided as a guide
only.
4. INSTRUCTIONS
OVERVIEW. Once the leakage tester has been connected to one of the
cylinders compressed air is fed into that particular cylinder through the
built in pressure regulator. Diagnosis is made by observing the amount
of leakage that is indicated on the cylinder leakage gauge and by
listening for leakage at various points of the cars system.
4.1 Location of listening points
4.1.1 OIL DIpSTICk TUbE -
for leakage from damaged or worn rings
and/or cylinder wall.
4.1.2 RADIATOR FILLER - for cylinder wall cracks or head gasket leakage.
4.1.3 ADjACENT CyLINDER -
for head gasket leakage.
4.1.4 TAIL pIpE -
for exhaust valve leakage.
4.1.5 CARbURETTOR AIR INLET - for inlet valve leakage.
4.1.6 FUEL INjECTION ThROTTLE bODy -
for inlet valve leakage.
4.2 Connecting the system
4.2.1 Run the engine until it reaches operating temperature.
4.2.2 Remove spark plugs, oil dipstick, radiator cap, air filter from
carburettor or, if fuel injected, remove air filter or hose from the
throttle body.
4.2.3 position No.1 piston at TDC on the compression stroke so that
both inlet and exhaust valves are closed. Note: Always rotate the
engine in the normal operating direction. To position the piston
correctly use a piston position gauge and remove the cam/rocker
cover so that closed valves can be confirmed.
4.2.4 Screw the cylinder hose (see 'C' in parts diagram) into the spark
plug hole. If connecting to a 10 or 12mm thread, use adaptors 9
or 10 as appropriate. Do not connect to the tester until the
leakage gauge (6) has been calibrated.
4.2.5 Screw a 1/4"bSpT male air line connector fitting into the
threaded hole on the side of the regulator (connector not supplied).
Turn the regulator knob on the tester fully anti-clockwise to shut
down the regulator before connecting the air. Connect the
compressed air, which must be between 45 and 100psi, to the
regulator.
4.2.6 Calibrate the leakage gauge by turning the regulator knob
clockwise until the needle on the right hand gauge reaches zero
at the end of the yellow 'SET' band. (Typically, this will happen
between 15 to 20psi). Now insert connector 'A' on the cylinder
hose into connector 'b' on the tester hose. Any leakage present
in the currently connected cylinder will show on the cylinder
leakage gauge as a percentage loss. A cylinder that is not
leaking will read approximately 20% in the green band.
4.2.7 Test all other cylinders, each at TDC, and compare the leakage
figures to determine which cylinders are faulty.
4.2.8 If necessary, retest the cylinder(s) showing high leakage. Check
the listening points (see 4.1) to determine the cause of the leakage.
4.3 Helpful Suggestions.
4.3.1 If 100% or excessive leakage shows on gauge the cylinder may
not be at TDC on the compression stroke. Check to ensure that
the valves are closed. Always try to position piston at TDC for
uniform results.
4.3.2 If rings are broken or cylinder walls are scored excessive
leakage will be identified.
4.3.3 It is important that all cylinders have reasonably uniform readings
(as in compression testing). Differences in excess of 15%
indicate excessive leakage.
4.3.4 Large engines tend to leak more than small engines.
4.3.5 If leak is excessive on a vehicle with low mileage, piston rings
may be stuck. Treat engine with quality tune-up oil for a period of
time and then re-test before disassembling.
4.3.6 The lower the pitch of the leakage sound, the greater the leak.
4.3.7 To assist with listening use a length of clean hose, or a
mechanic’s stethoscope with the probe removed.
Thank you for purchasing a Sealey product. Manufactured to a high standard this product will, if used according to these instructions and properly
maintained, give you years of trouble free performance.
IMPORTANT
:
PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS AND
CAUTIONS. USE THIS PRODUCT CORRECTLY, AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY
CAUSE DAMAGE AND/OR PERSONAL INJURY AND WILL INVALIDATE THE WARRANTY.
VSE2020.V2 ISSUE No:2 060809
The recommended hook-up is shown below.
3.1
Ensure that the air valve regulator is in the "off" position before
connecting to the air supply.
3.2
you will require an air pressure of 45 to 100psi.
WARNING!
Ensure the air supply is clean and does not exceed
the pressure quoted. Too high an air pressure and/or unclean air
will shorten the life of the tester due to excessive wear and
may be dangerous, causing damage and/or personal injury.
3.3
Drain the compressor air tank daily. Water in the air line will
damage the tester.
3.4
Clean compressor air inlet filter weekly.
3.5
Line pressure should be increased to compensate for unusually
long air hoses (over 8 metres). The minimum bore for hose and
fittings is 1/4”.
3.6
keep hoses away from heat, oil and sharp edges. Check hoses
for wear and make certain that all connections are secure.
3.
AIR SUPPLY
