Technical information

3
New Seminar Reveals Solutions – continued from page 1
Batteries
A drained battery that is capable of
holding a charge may be caused by a
parasitic drain. A parasitic draw test,
along with a circuit/system test, is
covered in the seminar.
Brakes
The keys to a successful brake
service involve making the right call on
rotor refinishing, cleaning all compo
-
nents and proper assembly. Burnishing
the brake pads and rotors should be
performed whenever the brake rotors
have been refinished or replaced, or the
brake pads have been replaced.
Rotating Electrical
Causes of charging or starting system
failure can include high resistance in the
battery cables or an oil leak that enters
an electric motor. Before replacing
components, replace damaged cables
or terminals and repair any oil leaks. In
addition, tips on starter motor installa
-
tion, drive belt diagnosis, and automatic
tensioner diagnosis are covered.
Water Pumps
Water pumps may fail due to contam-
ination and corrosion. Failure to flush
the cooling system and replace the
coolant can lead to repeat failure. When
installing a new water pump, clean all
sealing surfaces, do not strike the water
pump shaft (this will cause damage to
the new water pump), and turn the hub
by hand to check for rotation.
Oil Filters
If the oil regulating valve and the
bypass valve on the engine become
“sticky” from dirt and contaminants,
too much pressure may enter into the
filter and cause the element to collapse
or bulge out. If a damaged filter ele
-
ment is discovered, perform a complete
inspection of the filter bypass valve and
the pressure regulator valve.
Suspension
Installing air shocks/struts requires
cycling the shock/strut to spread lubri
-
cant inside the diaphragm to avoid bind-
ing. Inflate the air diaphragm through
the air fitting until the shock/strut fully
extends. Leave the shock/strut fully
extended to make it easier to install.
Fuel Pumps
A poor connection between the body
harness electrical connector and the fuel
pump can result in drivability concerns.
Installation of the fuel pump connector
is quick and easy with the proper tools.
Check each splice for electrical continu
-
ity using a digital ohmmeter — a reading
very close to zero ohms indicates the
crimps are good.
Emissions
When removing spark plugs from
aluminum heads, allow the engine to
cool. The heat of the engine in combi
-
nation with a spark plug that is still hot
may cause the spark plug threads to
be damaged or strip the cylinder head
upon removal. An improperly torqued
spark plug can cause a compression
loss-misfire.
Body Electrical
Fretting corrosion is a buildup of
insulating, oxidized wear debris that
can form when there is a small motion
between electrical contacts. When diag
-
nosing intermittent electrical conditions,
check for poor connection/terminal
retention, micro motion, or a connector,
component or wiring harness that is
not properly secured, resulting in move
-
ment.
ACDelco Training
To enroll in the Today’s Top
Service Concerns seminar or other
ACDelco training classes, go to
www.acdelcotechconnect.com and
click the Training tab. To learn when
ACDelco seminars will be scheduled in
your area, contact your local ACDelco
distributor.
– Thanks to Peter Robert
The full CONNECTION site also can
be accessed from the menu, providing
users with complete access to all of the
functionality and features of the parts
ordering tool.
The mobile site is available on
multiple handheld devices, making
it possible for technicians to order
parts without leaving the service bay.
Information entered on the mobile site
also is available on the user’s desk
-
top computer. To get started, log in
at www.acdelcoconnect.com on your
mobile device.
More Support
To become more familiar with the
various elements of the parts ordering
tool, check out the Training link under
Tools as well as Help on the top naviga
-
tion bar. There are several short videos
that describe how to use the different
features in CONNECTION, such as
“How to Link Accounts for ePromo
-
tions” and “How to Smart Search.”
Quick Reference Guides also provide
a high-level overview of featured
products.
Product videos and technical support
will soon be available on CONNECTION
as well. Use the Feedback button to
request any additional topics you would
like to see.
CONNECTION will continue to
feature the ACDelco Specialty
Catalogs: Illustrated, Battery, Pigtail,
MDHD Filter, and Chemical. Plus,
enhancements have been made to the
Illustrated Catalog with the addition
of Regular Production Option (RPO)
codes and Tiered Branding — ACDelco
Professional, Advantage, and Specialty
— parts listings.
Finally, the number of shop manage
-
ment systems that can be integrated
with CONNECTION has increased,
making it one of the quickest and easi
-
est ways to look up and order parts.
CONNECTION ePromotions
• Enroll in TIS2Web (Technical
Information System) for 2015 and
earn back up to $1,000 of your
TIS2Web subscription fee (Option
2) by purchasing ACDelco products
through CONNECTION.
• Get access to GM Service
Information at no additional charge
for the following month once you
reach a target of $3,000 in ACDelco
purchases via CONNECTION in any
given month.
– Thanks to Kelli Abbott and
Kim LaClear
New CONNECTION – continued from page 2