Tu-21 Engine Cylinder Leak Tester Leakage Detector

The recommended hook-up is shown below

1. Ensure that the air valve regulator is in the "off" position before connecting to the air supply
2. Will require an air pressure of 45 to 100psi
3. 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.
4. Drain the compressor air tank daily. water in the air line will damage the tester.
5. Clean compressor air inlet filter weekly.
6. Line pressure should be increased to compensate for unusually long ari hose (over 8 meters). the minimum bore for hose and fitting is 1/4"
7. Keep hose away from heat, oil and sharp edges. Check hos es for wear and make certain that all connections are secure.

Engine Compression Gauge Test Kit

Reasons for choosing this cylinder pressure leak detector kit?

1. One-piece gauge assembly

• High precision gauge tester features double gauges, quick pressure readout, and direct / indirect test methods for easy engine system work.

2. Quick and efficient work

• Follow the detailed operation details in the instruction, you can quickly get accurate readings and then judge the fault on this basis.

3. Ideal for mechanics

• Cylinder compression tester kit is made of high-quality metal and rubber materials, exquisite craftsmanship, sturdiness and durability.

2 WAYS TO CONNECT

Easy Usage

• Remove Schrader valve and close the air regulator valve anticlockwise before using shop air. Connect the separate rubber hose to the gauge assembly, observe the tested cylinder and decide whether you need to install either of the M10 or M12 adapter on that basis.
• 2 kinds of testing methods. Either is optional as you like.
• Direct type test

Gauge tester can directly connect to 10" rubber hose for spark plug test.

• Screw-in type test

Install either of 2 aluminum adapters(M10/M12) based on the first method.

Dual Pressure Gauges Engine Compression Leakdown Detector for Gasoline Engine with 10 12 14mm Spark Plugs

Cylinder Leak Down Tester Kit

•Instrument structure:

• The instrument consists of a pressure regulator, an intake pressure gauge, a measuring pressure gauge, an air duct, a quick-change connector, etc.
• the main technical parameters:
• Pressure measurement range: 0—1 MPa
• Inlet pressure range: 0-l.6 MPa
• Working air pressure: 0.6—0.8 MPa

•How to use:

1. Remove the spark plugs of the engine, use the handle to turn the crankshaft to make the piston at the top dead center, engage the direct gear, and tighten the parking brake to prevent the compressed air from pushing the piston to move during the test.
2. Screw the air supply connector on the first cylinder at the compression top dead center, connect the quick-change connector end of the air duct to the output end of the measuring instrument, and at the same time, connect the air compressor to the input end of the test instrument . Close the pressure regulating valve of the instrument (pull out the pressure regulator knob when in use).
3. Start the air compressor to inflate, and close it when the charging reaches 0.8MPa, prepare the stopwatch, quickly start the pressure regulating valve, press the stopwatch at the same time, record the pressure holding time, observe the change of the pressure gauge, when the gauge pressure drops When it reaches 0.4 MPa, press the stopwatch to record the time it takes for the gauge pressure to drop from 0.8 MPa to 0.4 MPa. Use this length of time to compare similar machines to diagnose the degree of damage to the cylinder air leakage. The longer the maintenance time, The better the air-tightness of the cylinder; if the pressure holding time is very short, usually less than 10 seconds, it indicates that the air redness is serious and the air leakage must be repaired. In order to facilitate the test, the test sequence of each cylinder is carried out according to the firing order of the cylinders. One cylinder can be tested for every half revolution (180°) of the crankshaft.
4. Judgment of leaking location:

Simultaneously actuate the air compressor to deliver air to the cylinder at the top dead center. Use the pressure regulating valve to control the pressure at 0.6MP3. Listen carefully to the sound of air leakage to determine where the cylinder is leaking. If you hear the sound of air leakage at the intake manifold, it means that the intake valve is not sealed; if you hear the sound of air leakage at the muffler port of the exhaust pipe, it means the exhaust valve is not sealed; if you hear it at the oil filling port, Generally, there is a sound of air leakage, and a slight small sound is normal; if you hear a loud sound and feel that there is air flow, it is a serious air leakage, indicating that the cylinder-piston pair is not sealed: If you see air bubbles at the radiator filling place Emerging from the water indicates that the cylinder head gasket is burnt out, causing the cylinder and the water jacket to pass through; if you hear the sound of air leakage at the spark plug port adjacent to the cylinder, it indicates that the cylinder head gasket is burned out between the two cylinders and a cylinder flush occurs.