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

Item 63391

Brake Bleeding

1.  Attach a 3" Hose (5) to the 

bottom of the Suction Lid (2a).

2.  Attach a 23" Hose (4) to the port on 

the top of the Suction Lid that does not 
have the 3" Hose attached, as shown in 
Figure A.  Then, attach the other end of 
that 23" Hose to the Vacuum Pump (1).

3.  Make sure the O-ring (11) is completely 

seated into the groove on the top of 
the Cup to provide a good seal.  Firmly 
attach the Suction Lid to the Cup (3).

4.  Remove the cap from the vehicle’s 

master cylinder, and make sure the 
master cylinder is full of brake fluid.  
If not full, fill the master cylinder 
to capacity with clean, new 
brake fluid.  (Use only the kind 
of brake fluid recommended by 
the vehicle manufacturer.)

Note:  

Determine the proper 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 23" Hose (4) to the 

remaining port on the Suction Lid.

6.  Insert the Tapered Hose Adapter (6) 

into the 23" Hose.  Connect the 
other end of the adapter to the 
Brake Bleed Screw Adapter (9).

7.  Squeeze the Handle of the 

Vacuum Pump 10 to 15 times to 
create a vacuum in the Cup.

Note: 

The Gauge on the Vacuum Pump 

should read at approximately 10 inHg.  
Do not exceed 20 inHg.  A greater vacuum 
could damage the vehicle’s brake system.

8.  Open the vehicle’s brake caliper 

bleed screw, and allow brake 
fluid to flow into the Cup until fluid 
appears clear and free of bubbles.  
Then, retighten the bleed screw.

FIGURE A

23" HOSE (4)

BRAKE BLEED  

SCREW ADAPTER  

(9a, 9b, OR 9c) 

TAPERED 

HOSE 

ADAPTER 

(6)

23"

HOSE (4)

TO BRAKE CALIPER 

BLEED SCREW

3" HOSE (5)

SUCTION 

LID (2a)

O-RING (11)

CUP (3)

PUMP

SCREW

VACUUM  

PUMP (1)

GAUGE

VACUUM

RELEASE

VALVE

Summary of Contents for PITTSBURGH AUTOMOTIVE 63391

Page 1: ...rence 20j 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 2018 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 Diagrams within this manua...

Page 2: ...e 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 Nonskid safety shoes hard hat or hearing protection must be used for appropriate conditions 6 Do not force the tool Use the correct tool for your application The correct tool will do the job better and sa...

Page 3: ...environment Early signs of carbon monoxide poisoning resemble the flu with headaches dizziness or nausea If you have these signs the work area may not be vented properly Get fresh air immediately 18 People with pacemakers should consult their physician s before use Electromagnetic fields in close proximity to heart pacemaker could cause pacemaker interference or pacemaker failure Caution is necess...

Page 4: ...RE 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 ...

Page 5: ...mine the proper 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 23 Hose 4 to the remaining port on the Suction Lid 6 Insert the Tapered Hose Adapter 6 into the 23 Hose Connect the other end of the adapter to the Brake Bleed Screw Adapter 9 7 Squeeze the Handle of the Vacuum Pump 10 to 15 times to create ...

Page 6: ... using the Vacuum Pump clean the tool and store it in a clean dry location out of reach of children 13 WARNING Before driving the vehicle carefully check for leaks and test for proper brake operation Maintenance and Servicing 1 Before each use Inspect the general condition of the Vacuum Pump Check for misalignment or binding of moving parts cracked or broken parts damaged Hoses loose connections a...

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 Adapter A 1 9b Brake Bleed Screw Adapter B 1 9c Brake Bleed Screw Adapter C 1 10 Universal Cup Adapter 1 11 Cup O Ring 1 1 2a 2b 11 3 4 5 6 7 8 9c 9b 9a 10 ...

Page 8: ... 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 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 specific legal rights and you may also have other rights which vary from st...

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