Air Vacuum Pump
With R-134a Connector
92475
ASSEMBLY AND OPERATING INSTRUCTIONS
All technicians opening the refrigeration
circuit in automotive air conditioning systems
MUST be certified in refrigerant recovery and
recycling procedures in compliance with Section
609 of the Clean Air Act Amendments of 1990.
For additional information regarding ozone
depletion and air conditioning service regulations,
please visit EPA’s website:
In addition, service of air conditioning
systems can result in overfilling,creating
a serious EXPLOSION HAZARD, if done
by an untrained or inexperienced
technician.
Due to continuing improvements, actual product may differ slightly from the product described herein.
®
3491 Mission Oaks Blvd., Camarillo, CA 93011
Copyright© 2005 by Harbor Freight Tools®. All rights reserved. No portion of this
manual or any artwork contained herein may be reproduced in any shape or form
without the express written consent of Harbor Freight Tools.
For technical questions and replacement parts, please call 1-800-444-3353
3. Keep children away. Children must never be allowed in the work area. Do not
let them handle machines, tools, or extension cords.
4. Store idle equipment. When not in use, tools must be stored in a dry location
to inhibit rust. Always lock up tools and keep out of reach of children.
5. Use the right tool for the job. Do not attempt to force a small tool or attach-
ment to do the work of a larger industrial tool.There are certain applications for
which this tool was designed. It will do the job better and more safely at the rate
for which it was intended. Do not modify this tool and do not use this tool for a
purpose for which it was not intended.
6. Dress properly. Do not wear loose clothing or jewelry as they can be caught
in moving parts. Protective, electrically nonconductive clothes and nonskid
footwear are recommended when working. Wear restrictive hair covering to
contain long hair.
7. Use safety equipment for your protection. Always wear ANSI approved
impact safety goggles. Wear an ANSI approved dust mask or respirator when
working around metal, wood, and chemical dusts and mists.
8. Do not overreach. Keep proper footing and balance at all times. Do not reach
over or across running machines.
9. Maintain tools with care. Keep tools maintained and clean for better and
safer performance. Follow instructions for lubricating and changing accesso-
ries. Inspect tool fittings periodically and, if damaged, have them repaired by
an authorized technician. The handles must be kept clean, dry, and free from
oil and grease at all times.
10. Disconnect power. Unplug tool from air pressure supply when not in use.
11. Remove adjusting keys and wrenches. Check that keys and adjusting
wrenches are removed from the tool or machine work surface before attaching
it to air pressure supply.
12. Avoid unintentional starting. Be sure the air vacuum pump is properly con-
nected to the automotive AC system before attaching it to your air pressure
supply.
13. Stay alert. Watch what you are doing, use common sense. Do not operate
any tool when you are tired.
14. Check for damaged parts. Before using any tool, any part that appears dam-
aged should be carefully checked to determine that it will operate properly and
perform its intended function.Check for alignment and binding of moving parts;
any broken parts or mounting fixtures; and any other condition that may affect
SKU 92475 DownFlooadr ftreocmhWniwcwa.lSqoumeasnutiaolsn.sco,mp.leAallsMeancuaallls1S-e8a0rc0h-4A4nd4D-3o3w5n3lo.ad.
Page 3
proper operation. Any part that is damaged should be properly repaired or
replaced by a qualified technician.
15. Replacement parts and accessories. When servicing, use only identical
replacement parts. Use of any other parts will void the warranty. Only use ac-
cessories intended for use with this tool. Approved accessories are available
from Harbor Freight Tools.
16. Do not operate tool if under the influence of alcohol or drugs. Read warn-
ing labels on prescriptions to determine if your judgment or reflexes are impaired
while taking drugs. If there is any doubt, do not operate the tool.
17. Use proper size and type extension cord. If an extension cord is required for
your air compressor, it must be of the proper size and type to supply the cor-
rect current to the compressor without heating up. Otherwise, the extension
cord could melt and catch fire, or cause electrical damage to the compressor.
18. Maintenance. For your safety, service and maintenance should be performed
regularly by a qualified technician.
19. WARNING: The brass components of this product contain lead, a chemical
known to the State of California to cause birth defects (or other reproductive
harm). (California Health & Safety code § 25249.5, et seq.)
Warning:The warnings, cautions, and instructions discussed in this instruc-
tion manual cannot cover all possible conditions and situations that may oc-
cur. It must be understood by the operator that common sense and caution
are factors which cannot be built into this product, but must be supplied by
the operator.
Unpacking
When unpacking, check to make sure the product is intact and undamaged. If
any parts are missing or broken, please call Harbor Freight Tools at the number
on the cover of this manual.
REV 06/05
SKU 92475 DownFlooadr ftreocmhWniwcwa.lSqoumeasnutiaolsn.sco,mp.leAallsMeancuaallls1S-e8a0rc0h-4A4nd4D-3o3w5n3lo.ad.
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Assembly
NOTE: While not required for operation, it is ad-
visable to mount a quick release air fitting to
the Air Fitting (13).This will make it easier for
you to quickly attach and detach your air
supply hose from this tool.
Air Fitting (13)
Operation
It is unlawful and hazardous to discharge refrig-
erants into the atmosphere.Before beginning work
with this tool, safely capture refrigerants using an
approved refrigerant recovery system, and dispose of them properly. Contact the
EPA for important certification regulations and other regulations that apply,
see Front Cover.
Warning:The AC system must be turned OFF during this procedure.
1. Empty the AC system of refrigerants, in preparation for purging and refilling.
2.
Attach your air pressure hose (not in-
cluded) to the Air Fitting (13) either by
threading it directly on, or by using a quick
release fitting.
3.
Attach the R-134a Manifold fitting to the
AC drain port in your vehicle.This is a quick
release fitting. NOTE: The drain port is
generally the lower of the two R-134a
manifold ports in your system, and is lo-
cated downstream from the compressor
in your system. Please refer to your ve-
hicle owner or shop manual for specific
information on your vehicle.
R-134a Connector (8)
4. Turn on the Air Vacuum Pump by activating your air compressor (not included).
Recommended pressure is 40 PSI, and not to exceed 90 PSI.
5. The vacuum will build for approximately 2 minutes, before reaching its full power.
Allow the pump to draw vacuum on the system for approximately 5-10 minutes
to thoroughly remove all moisture from the system.
6. The gauge (not included) should show negative pressure and maintain that
reading for 10 minutes. If it rises back towards 0, there may be a leak in the
system.
7. Remove the R-134a manifold fitting, and turn off your air compressor.
REV 06/05
SKU 92475 DownFlooadr ftreocmhWniwcwa.lSqoumeasnutiaolsn.sco,mp.leAallsMeancuaallls1S-e8a0rc0h-4A4nd4D-3o3w5n3lo.ad.
Page 5
Maintenance
1. Always store your Air Vacuum Pump in a secure place when not in use, out of
reach of children and other unauthorized persons.
2. Protect it from damp or corrosive atmospheres or materials which may cause
damage.
3. Before storing, inject a small amount of WD-40® or other water replacement
lubricant into the R-134a Connector (8) and Air Fitting (13). This will help pre-
vent corrosion.
4. All service and repairs must be performed only by a qualified technician.
Parts List
Part # Description
Qty.
Part # Description
Qty.
1
1
2
3
4
5
6
7
Handle
1
8
R134a Connector
Screw m6
Cover
6
9
Washer
Base
4
1
10
11
12
13
1
Nut m8
1
Fitting
1
Manifold Block
Washer
1
Tube m10
Air Fitting
1
3
1
Tube Fitting m10
1
NOTE: Some parts are listed and shown for illustration purposes only and are not
available individually as replacement parts.
REV 06/05
SKU 92475 DownFlooadr ftreocmhWniwcwa.lSqoumeasnutiaolsn.sco,mp.leAallsMeancuaallls1S-e8a0rc0h-4A4nd4D-3o3w5n3lo.ad.
Page 6
Assembly Drawing
PLEASE READTHE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDEDTHE PARTS DIAGRAM
IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER NOR DIS-
TRIBUTOR MAKES ANY REPRESENTATION ORWARRANTY OF ANY KINDTOTHE BUYERTHAT
HE OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT OR THAT HE OR SHE IS
QUALIFIED TO REPLACE ANY PARTS OFTHE 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 RE-
PAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO, OR ARISING OUT
OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO.
REV 06/05
SKU 92475 DownFlooadr ftreocmhWniwcwa.lSqoumeasnutiaolsn.sco,mp.leAallsMeancuaallls1S-e8a0rc0h-4A4nd4D-3o3w5n3lo.ad.
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