CLAS AC 0118 Universal Cylinder Leak Detector Tester User Manual
- June 13, 2024
- CLAS
Table of Contents
CLAS AC 0118 Universal Cylinder Leak Detector Tester
WARNING
Before returning this product for any reason (installation problem, instructions for use, breakdown, manufacturing problem…), please contact us.
Contact :
You can reach us by mail sav@clas.com or by phone +33(0)4 79 72 69 18 or go directly to our website clas.com
If you have changed your mind regarding your purchase, please return this product before you attempt to install it.
CHARACTERISTICS
This tool allows the seal of the cylinders to be tested without the need to
open up the engine. It is one of the simplest and fastest tests to use to
check the engine’s condition.
Air is injected through the plug well into each cylinder, and the dial
indicates if there’s any pressure loss.
Engine compression leaks can damage valves, wear segments, crack the cylinder
head gasket or the cylinder head.
Set including :
1 pressure gauge
1 leakage zone pressure gauge
1 pressure regulator
1 hose and quick coupling
1 set of spark plugs and spark plug wells accessories
Operating principle :
Measurement on manometer of the leakage degree by introducing compressed air in each cylinder.
Location of the leaks by listening to the levels below:
Oil dipstick port
Radiator inlet
Exhaust manifold
Intake pipe
Throttle valve
INSTRUCTIONS
IMPORTANT: Make sure the regulator knob is turned fully counterclockwise before connecting to compressed air. Pressure gauges are not guaranteed against overpressure.
WARNING: Make sure the vehicle is in park or neutral, with the parking brake on and your hands out of the engine compartment. The engine may run while this tool is in use. Grounding the distributor coil wire will disable it.
- Run the engine until it reaches operating temperature.
- Remove spark plugs, dipstick, radiator cap, air filter.
- Remove all spark plugs and place the piston at approximately top dead center so that both valves are closed. Run the engine only in the normal direction.
To position the cylinder correctly:
- Rotate until the cylinder goes into a compression situation.
- The piston is at top dead center when the crankshaft pulley mark is at the 0 mark.
- Turn the regulator knob fully counterclockwise. Then connect compressed air (6 to 10 bar) to the regulator without the cylinder hose being connected to the tester.
Turn the regulator clockwise until the pressure gauge shows 0 at the end of the yellow setting area.
Helpful suggestions
-
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.
-
If rings are Brocken or cylinder walls are scored excessive leakage will be identified.
-
It is important that all cylinders have reasonably uniform readings (as in compression testing).
Differences in excess of 15% indicate excessive leakage. -
Large engines tend to leak more than small engines.
-
If leak is excessive on a vehicle wih low mileage, piston rings my be stuck. Treat engine with quality tune-up oil for a period time and then re-test before disassembling.
-
The lower the pitch of the leakage sound, the grater the leak.
-
To assist with listening use a length of clean hose, or a mechanic’s stethoscope with the probe removed.
-
When making repeat tests on the sema cylinder, variations in the piston position and engine temperature can cause gauge readings to differ by up to 10%.
-
If an engine has multiple faults (such as worn rings and burned valves) the tester may indicate only the most serious fault.
Note: There is always some leakage past the piston rings. As a result you will always hear some leakage when listening to the dipstick tube.
USE
Results:
Green set band: engine in perfect state
Yellow set band: engine in good condition
Red set band: engine need to review
LEAKAGE
| Locations | Default causing leak | Operation purposed |
|---|---|---|
| Segments Oil dipstick tube | Used segment Cylinder leak | Segmentation repair |
| Cylinder head gasket | Leak between cylinder and head gasket Leak between | |
| combustion chamber and cooling system Leak of 2 cylinders Cylinder cracked |
Remove cylinder head gasket
Adjacent cylinder| Leak between valve and his seat| Test drive
Tail pipe| Valve open due to a wrong adjustment| Adjust valve system
Plugs| Incorrect assembly Spark plugs intuitable for engine| Remove plug –
Threading repair
Customers Support
CLAS Equipements
ZA de la CROUZA
73800 CHIGNIN
FRANCE
Tél. +33 (0)4 79 72 62 22
Fax. +33 (0)4 79 72 52 86
UNIVERSAL CYLINDER LEAK DETECTOR TESTER
If you need components or parts, please contact the reseller.
In case of problems, please contact your authorized technician.
