Click here to make tpub.com your Home Page

Page Title: SECTION I - INTRODUCTION
Back | Up | Next

Click here for thousands of PDF manuals

Google


Web
www.tpub.com

Home


   
Information Categories
.... Administration
Advancement
Aerographer
Automotive
Aviation
Construction
Diving
Draftsman
Engineering
Electronics
Food and Cooking
Logistics
Math
Medical
Music
Nuclear Fundamentals
Photography
Religion
   
   

 

TM 9-4910-749-10
SECTION I - INTRODUCTION
(2)  On  GENERAL  MOTORS  vehicles
using  the  High  Energy  ignition  (HEI)
1-1. GENERAL INFORMATION
system, instead of connecting the RED
test clip to the negative (-) terminal of the
c o i l , connect ths RED test clip to the tach
a. The Inductive Dwell/Tach is used to test and
adjust dwell, idle speed and idle mixture. It is also
terminal using the HEI terminal adapter
used to test the mechanical wear of the distributor,
clip provided with the tester. The tach
the PCV system and the condition of the breaker-
terminal is Iocated on the distributor for
points and the air-filter.
V8 and V6 engines while it is located on
the coil for 4 cylinder or L6 engines (See
b. The Inductive Dwell/Tach will work on any 4,
6 , or 8 cylinder, 4 cycle, negative or positive ground
(3)  On  vehicles  with  a  POSITIVE
engines.
GROUND  electrical  system,  connect  the
BLACK test clip to the negative (-) ter-
1-2. ZERO ADJUST
minal of the coil and the RED test clip to
the engine ground.
The pointer on the meter should rest on 0 whenever
the leads are disconnected from the engine. The zero
adjust lever is in the front. To zero the meter, move
the zero adjust lever to the right or left until the
pointer lines up on 0.
CAUTION
Read and observe the Safety Rules and
Warnings  for  Automotive  Maintenance  in
the front of this manual BEFORE PRO-
FIGURE 2 - HEI IGNITION SYSTEMS
CEEDING.
SECTION II - OPERATION
1-4. POINT RESISTANCE TEST
1-3. BASIC TEST CONNECTIONS
Perform this test if y O U h a v e h a r d s t a r t i n g , i n a c c u r -
ate timing, a rough running engine and poor fuel
a. T u r n  t h e  C Y L I N D E R  s e l e c t o r
to
the
appro-
economy which can be caused by burned points.
priate position for your engine.
a. Turn the test selector to the POINT RESIS-
b. Connect the RED test clip to the negative (-)
TANCE position (See Figure 3).
terminal of the coil and connect the BLACK test
clip to the engine ground (See Figure 1).
b. Turn the cylinder selector to the 4 cylinder
position.
c. Turn the vehicIes IGNITION SWITCH to the
ON position.
FIGURE 1 - BASIC TEST CONNECTIONS
NOTE
FIGURE 3 - TEST SELECTOR AT POINT RESIS-
(1) The negative (-) terminal of the coil
TANCE POSITION
on FORD vehicles is marked DEC.
1-1

Privacy Statement - Press Release - Copyright Information. - Contact Us

Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business