U.S. General 66373 User manual

INSTRUCTIONS AND PRECAUTIONS
Distributed exclusively by Harbor Freight Tools®.
3491 Mission Oaks Blvd., Camarillo, CA 93011
Visit our website at: http://www.harborfreight.com
SAVE THESE INSTRUCTIONS. READ ALL
PRECAUTIONS AND INSTRUCTIONS.
Copyright©2009 by Harbor Freight Tools®. All rights reserved. No portion of this document or any artwork contained
herein may be reproduced in any shape or form without the express written consent of Harbor Freight Tools.
Diagrams within this document may not be drawn proportionally. Due to continuing improvements, actual product
may differ slightly from the product described herein. Tools required for assembly and service may not be included.
For technical questions or replacement parts, please call 1-800-444-3353.
SPECIFICATIONS
Used For: General Motors, Ford and Chrysler
vehicles
Used On: Heater Hoses, Transimission Oil
Coolers, Air Condtioning and Fuel Lines
UNPACKING
When unpacking, make sure that the item
is intact and undamaged. If any parts are missing
or broken, please call Harbor Freight Tools at the
number shown on the cover of this document as
soon as possible.
21-PIECE FULL COVERAGE
DISCONNECT TOOL SET
66373
Please note: All brand names shown above are all ® registered by the manufacturer.

SKU 66373 For technical questions, please call 1-800-444-3353. Page 2
IMPORTANT SAFETY INFORMATION
AND INSTRUCTIONS
WARNING! To prevent explosion, serious1.
injury, and death: Service of air conditioning
systems must be done only by trained and
experienced technician to avoid overlling.
Technicians opening refrigeration circuit in
automotive air conditioning systems MUST
be certied in refrigerant recovery and recy-
cling procedures in compliance with section
609 of Clean Air Act Amendments of 1990.
For additional information regarding ozone
depletion and air conditioning service regu-
lations, visit EPA’s website: www.epa.gov/
ozone
Turn off vehicle engine, allow it to cool, and2.
disconnect battery according to service
manual instructions before use.
Wear ANSI-approved safety goggles and3.
heavy-duty work gloves during use.
Use as intended only.4.
Inspect before every use; do not use if parts5.
are loose or damaged.
Maintain product labels and nameplates.6.
These carry important safety information.
If unreadable or missing, contact Harbor
Freight Tools for a replacement.
Refer to vehicle’s service manual and to the7.
Parts List chart and Parts Diagram on the fol-
lowing pages to determine which tool to use
for the appropriate task and make and model
of vehicle.
Read the ENTIRE IMPORTANT
SAFETY INFORMATION section above
before set up or use of this product.
Record Serial Number Here:
Note: If product has no serial number, record
month and year of purchase instead.
Note: Some parts are listed and shown for illustra-
tion purposes only, and are not available
individually as replacement parts.
LIMITED 90 DAY WARRANTY
Harbor Freight Tools Co. makes every effort
to assure that its products meet high quality and
durability standards, and warrants to the original
purchaser that this product is free from defects in
materials and workmanship for the period of 90
days from the date of purchase. This warranty does
not apply to damage due directly or indirectly, to
misuse, abuse, negligence or accidents, repairs
or alterations outside our facilities, criminal activ-
ity, improper installation, normal wear and tear, or
to lack of maintenance. We shall in no event be
liable for death, injuries to persons or property, or
for incidental, contingent, special or consequential
damages arising from the use of our product. Some
states do not allow the exclusion or limitation of
incidental or consequential damages, so the above
limitation of exclusion may not apply to you. THIS
WARRANTY IS EXPRESSLY IN LIEU OF ALL
OTHER WARRANTIES, EXPRESS OR IMPLIED,
INCLUDING THE WARRANTIES OF MERCHANT-
ABILITY AND FITNESS.
To take advantage of this warranty, the prod-
uct or part must be returned to us with transporta-
tion charges prepaid. Proof of purchase date and
an explanation of the complaint must accompany
the merchandise. If our inspection veries the de-
fect, we will either repair or replace the product at
our election or we may elect to refund the purchase
price if we cannot readily and quickly provide you
with a replacement. We will return repaired prod-
ucts at our expense, but if we determine there is
no defect, or that the defect resulted from causes
not within the scope of our warranty, then you must
bear the cost of returning the product.
This warranty gives you specic legal rights
and you may also have other rights which vary from
state to state.
3491 Mission Oaks Blvd. • PO Box 6009 • Ca-
marillo, CA 93011 • [phone]
PLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED
THE PARTS LIST AND ASSEMBLY DIAGRAM IN THIS DOCUMENT
AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER
OR DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY
OF ANY KIND TO THE BUYER THAT HE OR SHE IS QUALIFIED TO
MAKE ANY REPAIRS TO THE PRODUCT, OR THAT HE OR SHE
IS QUALIFIED TO REPLACE ANY PARTS OF THE PRODUCT. IN
FACT, THE MANUFACTURER AND/OR DISTRIBUTOR EXPRESSLY
STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD
BE UNDERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS,
AND NOT BY THE BUYER. THE BUYER ASSUMES ALL RISK AND
LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL
PRODUCT OR REPLACEMENT PARTS THERETO, OR ARISING OUT
OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO.

SKU 66373 For technical questions, please call 1-800-444-3353. Page 3
Part # Description Vehicle Application
1 3/8” AC Spring Locking
Coupling Tool (Red)
1981-newer Ford vehicles, some 1994-newer
Chrysler vehicles
Releases spring lock connector on 3/8”
air conditioning line
2 1/2” AC Spring Locking
Coupling Tool (Blue)
1981-newer Ford vehicles, some 1994-newer
Chrysler vehicles
Releases spring lock connector on 1/2”
air conditioning line
3 5/8” AC Spring Locking
Coupling Tool (Black)
1981-newer Ford vehicles, some 1994-newer
Chrysler vehicles
Releases spring lock connector on 5/8”
air conditioning line
4 3/4” AC Spring Locking
Coupling Tool (White)
1981-newer Ford vehicles, some 1994-newer
Chrysler vehicles
Releases spring lock connector on 3/4”
air conditioning line
5 Ford/Chrysler Heater
Hose Disconnect Set
1986-newer Aerostar vans, 1991-newer full size
(E-series) vans
Disconnects 5/8” and 3/4” heater hose
quick connect ttings from heater core
6 Chrysler Fuel Line
Disconnect Set
1986-newer Chrysler LH vehicles, other
Chryserler vehicles with quick connect fuel lines
Releases quick connect ttings on fuel
lines (pressure and return)
7 Ford/GM Fuel Line
Disconnect Set
1992-newer Chev. Lumina & Monte Carlo;
Pontiac Grand Prix; Olds. Cutlass Supreme;
Buick Regal (all with ABS); 1988-newer Ford
pickups
Releases quick connect ttings on 5/16”
and 3/8” fuel lines. Releases fuel line
on fuel tank
8 Ford Clutch Coupling
Tool
1988-newer Ford F-series trucks, Bronco II,
Ranger & Explorer; 1989-newer Ford Thunderbird
& Mercury Cougar
Disconnect hydraulic clutch line from
clutch slave cylinder
9 Ford/GM/Chrysler Fuel
Line Disconnect Tool
GM, Chrysler & some Ford vehicles with quick
connect fuel lines
Releases quick connect ttings on 5/16”
and 3/8” fuel lines
10 3/8” Fuel Line
Disconnect Tool
(Yellow)
1987-newer Ford vehicles with spring lock
connectors
Releases spring lock connector on 3/8”
fuel line
11 1/2” Fuel Line
Disconnect Tool
(Green)
1987-newer Ford vehicles with spring lock
connectors
Releases spring lock connector on 1/2”
fuel line
12 5/16” Fuel Line
Disconnect Tool
GM, Chrysler and Ford vehicles with spring lock
connectors
Releases quick connect on 5/16” fuel
line
13 3/8” Fuel Line
Disconnect Tool
GM, Chrysler and Ford vehicles with spring lock
connectors
Releases quick connect on 3/8” fuel line
14 Ford/GM Quick
Disconnect Tool
Ford CFI fuel lines with hair pin connectors;
universal for radiator to transmission oil cooler
lines in 1987-newer Olds. Toronado; Buick Riviera
& Reatta; Cadillac Eldorado, Seville & Concourse;
1989-newer GM 1/2 ton, 3/4 ton & 1 ton pickups
Releases quick connect ttings used on
fuel, transmission and power steering
lines
15 Ford Oil Cooler Line
Disconnect Tool
1986-newer Ford vehicles with AXOD, AOD, or
ATX automatic transmissions
Releases transmission to radiator
cooler lines
16 Ford Fuel Line
Coupling Tool
1990-newer Ford Ranger & Explorer with 4.0 liter,
6-cylinder engines
Releases quick connect ttings on fuel
rail
17 Ford Heater Hose
Disconnect Tool
1995-newer Ford Crown Victoria & Mercury
Grand Marquis with 4.6 liter engines
Disconnects heater hose from engine
18 GM Heater Line Quick
Connect Separator
1991-newer GM vehicles with 3.1 liter, 3.4 liter
and 3800 V6 engines
Releases heater hose quick connect
tting from engine block and thermostat
housing
PARTS LISTS AND APPLICATIONS
Please note: All brand names shown above are all ® registered by the manufacturer.

SKU 66373 For technical questions, please call 1-800-444-3353. Page 4
PARTS LISTS AND APPLICATIONS
1
23
4
5
6
7
8
9
10 17
11
12
13
14
15
18
16