background image

Page 4

For technical questions, please call 1-888-866-5797.

Item 63391

Setup Instructions

1.  Open the Cup (3).

2.  Seat the O-ring (11) completely into 

the groove in the top of the Cup.

3.  Remove the shipping spacer that 

prevents the Vacuum Pump (1) handle 
from moving through its full range. 

Remove 

spacer 

prior to 

use.

4.  Cover the inlet of the Vacuum Pump 

with something such as a plastic bag.   

To prevent injury, DO NOT USE 
YOUR SKIN TO PLUG THE INLET.

   

Operate the pump several times to 
create the vacuum.  The vacuum 
should not decrease quickly.  If air 
is entering through the vacuum 
release valve, tighten it.  After the 
pump properly holds a vacuum, 
press in the Pump’s vacuum release 
valve to release the vacuum.  
Set the plastic bag aside.

5.  The vacuum pump should 

now be ready for use.

Operating Instructions

Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the 
beginning of this document including all text under subheadings therein 
before set up or use of this product.

Vacuum System Testing

1.  Position the vehicle in a flat, level 

outdoor area.  Set the parking 
brake and chock the tires.

2.  Attach a 23" Hose (4) to 

the Vacuum Pump (1).

3.  Attach the other end of the Hose to 

the vacuum system.  Keep clear of 
parts that will move or get hot while 
an assistant starts the engine.  
Wait until the vacuum reading 
stabilizes and compare it to the 
manufacturer’s specification.

4.  After obtaining a measurement, 

shut off the engine.

5.  A low or unstable vacuum reading 

may mean a vacuum leak, 
vacuum line blockage, cylinder 
sealing problems, incorrect valve/
ignition timing, or other issues.

Note:  

Vehicle vacuum systems will 

differ.  Consult the vehicle’s service 
manual for proper testing procedures.

6.  After testing is complete, disconnect 

the Vacuum Pump and Hose, 
remove any plugs or clamps 
and secure all vacuum lines.

Summary of Contents for 63391

Page 1: ...ence 20c When unpacking make sure that the product is intact and undamaged If any parts are missing or broken please call 1 888 866 5797 as soon as possible Copyright 2016 by Harbor Freight Tools All...

Page 2: ...lance at all times Proper footing and balance enables better control of the tool in unexpected situations 5 Use safety equipment Wear ANSI approved safety glasses underneath a full face safety shield...

Page 3: ...operly describe the correct procedure and test data for each vehicle 17 Carbon monoxide is produced while a vehicle s engine is operating and is deadly in a closed environment Early signs of carbon mo...

Page 4: ...ead the ENTIRE IMPORTANT SAFETY INFORMATION section at the beginning of this document including all text under subheadings therein before set up or use of this product Vacuum System Testing 1 Position...

Page 5: ...roper brake bleeding sequence from your vehicle service manual i e right rear wheel left rear wheel right front wheel left front wheel 5 Connect the other 23 Hose to the remaining port on the Suction...

Page 6: ...the same steps as above 13 When finished using the Vacuum Pump clean the tool and store it in a clean dry location out of reach of children 14 WARNING TO PREVENT SERIOUS INJURY Before driving the veh...

Page 7: ...Transport Lid 1 3 4 oz Cup 1 4 1 4 x 23 Vacuum Hose 2 5 1 4 x 3 Vacuum Hose 2 6 Tapered Hose Adapter 2 Part Description Qty 7 T Hose Connector 1 8 Straight Hose Connector 1 9a Brake Bleed Screw Adapte...

Page 8: ...e may elect to refund the purchase price if we cannot readily and quickly provide you with a replacement We will return repaired products at our expense but if we determine there is no defect or that...

Reviews: