Pittsburgh 63686 Assembly instructions

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LEVER ACTION GREASE GUN
63686
Owner’s Manual & Safety Instructions
Save This Manual Keep this manual for the safety warnings and precautions, assembly,
operating, inspection, maintenance and cleaning procedures. Write the product’s serial number in the back
of the manual near the assembly diagram (or month and year of purchase if product has no number). Keep
this manual and the receipt in a safe and dry place for future reference. 23c
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©2023 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 manual 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.
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.

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Specifications
Capacity 14 OZ. Standard Grease
Cartridge or 16 OZ. Bulk Fill
Function Method Manual Lever Type
Extensions 6 IN. Metal Tube & 9 IN. Flexible Hose
Coupler Type 4 Jaw Grease Coupler
Important Safety Information
The warnings, cautions, and instructions
discussed in this instruction manual
cannot cover all possible conditions
and situations that may occur. 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.
1. Wear ANSI-approved safety
goggles and heavy-duty
work gloves during use.
2. Do not use near open flame.
3. Inspect before every use; do not
use if parts are loose or damaged.
4. Use as intended only.
Do not use Grease Gun to hold or
dispense any other materials.
5. Properly load cartridge before use.
6. Read grease manufacturer’s
cautions before use.
7. Maintain a firm grip on the
tool with both hands.
8. Keep body of Grease Gun dry, clean,
and free from oil and grease.
9. Read and understand all instructions
and safety precautions as outlined
in the manufacturer’s manual for the
vehicle (or object) to be lubricated.
10. Keep work area clean.
Cluttered areas invite injuries.
11. Keep children away. Children must
never be allowed in the work area.
12. 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.

Page 3For technical questions, please call 1-888-866-5797.Item 63686
13. Dress properly. Do not wear loose
clothing or jewelry as they can be
caught in moving parts. Wear restrictive
hair covering to contain long hair.
14. Do not overreach. Keep proper
footing and balance at all times.
15. Maintain tools with care.
Follow instructions for lubricating
and changing accessories.
16. Stay alert. Watch what you are
doing, use common sense. Do not
operate any tool when you are tired.
17. Check for damaged parts. Before
using any tool, any part that appears
damaged should be carefully checked
to determine that it will operate
properly and perform its intended
function. Any part that is damaged
should be properly repaired or
replaced by a qualified technician.
18. Replacement parts and accessories.
When servicing, use only identical
replacement parts. Use of any
other parts will void the warranty.
19. Do not operate tool if under the
influence of alcohol or drugs.
Read warning 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.
20. Maintenance. For your safety, service
and maintenance should be performed
regularly by a qualified technician.

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Filling the Grease Gun
Installing Grease Cartridge
Barrel
Plunger
Rod
Release
Latch
Cartridge
1. Unscrew and remove the head of
the Grease Gun from the Barrel.
2. Pull the Plunger Rod all the way back
and ensure it is locked in place.
3. Remove both ends from a 14 ounce
grease cartridge (not included), and
insert the cartridge into the Barrel in the
direction indicated on the cartridge.
4. Screw the Head back onto the Barrel.
5. Depress the Release Latch,
and push the Plunger Rod
forward as far as possible.
Suction Filling
Note: Before suction filling, the Plunger
Seal on the grease rod needs to be rolled
upward by hand so that it opens toward
the opening of the Barrel. To do this,
unscrew grease rod from rear of the
barrel and manually roll seal upward.
Then reinsert grease rod into barrel.
1. Unscrew and remove the
Head from the Barrel.
2. Insert the open end of the Barrel
into the grease. Slowly pull the
Plunger Rod back while pushing
the Barrel deeper into the grease
to prevent air pockets from
being pulled into the Barrel.
3. When the Plunger Rod is fully
extended, remove the Barrel from
the grease. Wipe the exterior of
the Barrel clean of grease.
4. Then, screw the Head
back onto the Barrel.
5. Depress the Release Latch, and push
the Plunger Rod back into the Barrel.

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Using a Filler Pump
Note: This unit does not come with
a bulk loader fitting. User must
provide their own based on the style
of bulk loader pump coupler.
For installation of the bulk loader fitting,
remove the plug in the grease gun head
and replace with the bulk loader fitting.
Lever
Loader
Port
1. Remove the Loader Cover Screw.
2. Attach the Loader Port of the
Grease Gun to the Filler Valve
on the grease container.
CAUTION! Read and understand all safety
warnings and instructions as outlined in
the owner’s manual of the Filler Pump.
3. Operate the Filler Pump on
the grease container to fill the
Barrel of the Grease Gun.
Note: As the grease pumps into the
grease gun barrel the plunger handle
will extend. Loading is complete when
the plunger rod is fully extended.
4. Disconnect the Grease Gun from the
Filler Valve on the grease container.
Then, depress the Release Latch
and push the Plunger Rod forward
into the Barrel as far as possible.

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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.
Priming the Grease Gun
Note: If the Grease Gun does not work
properly, there may be air pockets in the
Barrel. Eliminate air pockets by using
EITHER of the following two methods.
Option 1:
1. Release and push the Plunger Rod
inward 2-3 times while simultaneously
pressing the Manual Air Release
Valve at the at top of the grease gun,
allowing trapped air to escape.
2. Operate gun.
3. If grease comes out smoothly
from the coupler, then grease
gun is primed. If not, repeat.
Air
Discharge
Valve
Option 2:
1. Unscrew the Head 1-1/2 turns.
2. Release plunger rod from locked
position and gently turn the rod until
it goes into the container tube
3. After all excess air is expelled from
the Barrel, retighten the Head.
4. Wipe any grease off the exterior of
the Barrel.
Grease Gun Operation
1. Clean the Grease Gun carefully
and completely with a clean
cloth before each use.
2. Insert the Coupler of the Grease Gun
fully onto the clean grease fitting
of the object you are lubricating.
3. With one hand, hold the Barrel securely.
With the other hand, pump the Handle
of the Grease Gun several times or
until a small amount of grease begins
to flow back out of the grease fitting.
4. When greasing is complete, tilt
coupler, twist nozzle of grease
gun, and pull back to remove from
fitting. (See Figure B.) Wipe any
excess grease from exterior of
the grease fitting and Coupler.
To Remove:
Tilt, Twist & P
ull
5. When finished, store the Grease
Gun in a clean, dry, safe location
out of reach of children.
Note: If unit is stuck on grease
fitting, loosen grease nozzle. See
Troubleshooting section.

Page 7For technical questions, please call 1-888-866-5797.Item 63686
Troubleshooting
Problem Possible Causes Likely Solutions
Grease gun does not
dispense grease.
1. Trapped air in
grease.
2. Cold grease.
3. Grease gun
extension blocked.
4. Plunger rod did
not enter the
grease cartridge.
1. Loosen gun head. Move plunger
rod in & out to remove air
pockets. Tighten gun head.
2. Warm the gun.
3. Remove and clean gun extension.
4. Maneuver plunger rod to properly
go inside the cartridge.
Grease leaks from
the back of gun.
1. Thin grease.
2. Rubber follower
in the plunger rod
is damaged.
1. Use thicker grease.
2. Unit needs to be replaced.
Lever or grip handle
cannot be operated.
Gun piston
damaged.
Replace gun.
Grease coupler is stuck
on the grease fitting.
Grease fitting
does not match.
Tilt the coupler, twist
& then pull back.
Maintenance and Servicing
1. Before each use, inspect the general
condition of the Grease Gun.
Check for cracked or damaged parts,
misaligned or binding of moving parts,
leaking connections, and any other
condition that may affect the product’s
safe operation.
If a problem occurs, have the problem
corrected before further use.
Do not use damaged equipment.
2. After every use, dry with a soft cloth,
remove all grease and debris from
the Grease Gun. Do not use solvents
to clean or immerse in any liquids.
3. When storing, keep in a clean, dry and
safe location away from children.
4. CAUTION! All maintenance, service,
and repairs not discussed in this
manual should only be performed
by qualified service technician.

26677 Agoura Road • Calabasas, CA 91302 • 1-888-866-5797
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 activity, 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 MERCHANTABILITY AND FITNESS.
To take advantage of this warranty, the product or part must be returned to us
with transportation charges prepaid. Proof of purchase date and an explanation
of the complaint must accompany the merchandise. If our inspection verifies
the defect, 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 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 state to state.
Record Serial Number Here:
Note: If product has no serial number, record month and year of purchase instead. Refer to UPC 193175506542.