Actron 5FI-4GLSTX Руководство пользователя
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COMPRESSION
TESTER
INSTRUCTIONS
Before making this test it
is a good practice to check
and be sure that all
cylinder head bolts are
tightened to the engine
manufacturer's torque
specifications.
1. Run the engine for about 15
minutes until it reaches normal
operating temperature.
2. With the engine off, loosen all
spark plugs about one turn,
then use an air hose to blow all
the dirt out of the spark plug
wells. Then remove all of the
spark plugs and gaskets. Place
them on a clean flat surface in
the order in which they were
removed. This will help to cor-
relate any compression prob-
lem with the condition of the
plug from the particular cylin-
der involved.
®
120 150
180
210
90
8 10 12
14
6
240
60
16
4
18
2
270
20
30
0
kPa x 100
300
0
Compression
Tester
3. Remove the air filter and block
open the carburetor throttle
plates to maximum. Remove
the high tension lead from the
center of the distributor and
ground it.
4. Hold the compression tester in
the spark plug hole and crank
the engine for at least 4 com-
pression strokes or until pres-
sure stops rising on the tester.
5. Record the compression read-
ing and repeat the test on all
remaining cylinders.
6. On a normal cylinder, the
CP7821
needle should advance on each
stroke until it reaches a peak.
All cylinders should test within
the engine manufacturer's
specifications and readings
should not vary more than 10%
from cylinder to cylinder.
7. If the needle fails to advance
normally or if it remains the same
for several strokes and then
starts to climb, the cylinder has a
sticking valve.
8. If the compression reading is
15 or more pounds above the
manufacturer's specification, it
is indicative of carbon build-up
in the cylinder.
One Year Warranty
If within one year from the date of pur-
chase this equipment fails due to defect in
materials or workmanship, return it to
Actron and Actron will repair it free of
charge.
This warranty gives you specific legal
rights, and you may also have other rights
which may vary from state to state.
9. If a reading on two adjacent
cylinders is 20 pounds or more
lower than the rest of the cylin-
ders, a defective head gasket
is indicated.
10. If readings are low or un-
even between cylinders, pour
a teaspoon of S.A.E. #30 oil
into each cylinder and retest. If
the readings increase consid-
erably, the fault is poorly seated
or worn rings. If the readings
remain about the same, the
valves are at fault.
11. When tests are completed,
put the spark plugs back in the
engine and return the high ten-
sion lead to the center of the
distributor. Unblock the throttle
and replace the air filter.
Customer Service
For product information or customer ser-
vice please call 1-800-ACTRON-7 (1-800-
228-7667) Monday through Friday, be-
tween 8:30 a.m. and 4:30 p.m. Eastern
time or fax anytime at (216) 651-2388.
Actron can also be reached by Email or
on the Internet.
Email address: [email protected]
Internet home page: http://www.actron.com
Actron Manufacturing Company
9999 Walford Avenue
Cleveland, Ohio 44102-4696
©1997 Actron Manufacturing Company. Sunpro is a regis-
tered trademark of Snap-On Tools Company and is used
2-202103
under exclusive license.
®