Astro Pneumatic Tool 78834 User manual

Product Type:Model: 78834 "LAST CHANCE" IMPACT RATED
HUB REMOVAL BOLT KIT
Page 1
Study, understand and follow all instructions provided
with this product. Read these instructions carefully
before installing, operating, servicing or repairing this
tool. Keep these instructions in a safe accessible place.
INTENDED USE OF THE TOOL
The 78834 Hub Removal Bolt Kit is designed to press
against knuckles to budge wheel hubs free for removal.
Do not use this tool outside of the designed intent.
Never modify the tool for any other purpose or use.
Caution: To help prevent personal injury
• Use of this product can expose you to chemicals
such as phthalates which are known to the State
of California to cause cancer, and birth defects or
other reproductive harm. For more information go
to www.P65Warnings.ca.gov/product.
Always wear ANSI approved safety equipment,
safety glasses and clothing when using this
product. Study, understand, and follow all
instructions provided with this product. Failure to
read and follow all warnings and operating
instructions may result in damages and serious
injury or death.
• Always wear ANSI approved goggles when using
this product. (Users and By standers).
• Never use this tool for any application other than for
which it was designed.
• Only use accessories designed for this tool.
• Never alter or modify this tool in any way.
• Improper operation and/or maintenance of the tool,
modification of the tool, or use of the tool with
accessories not designed for it could result in
serious injury or death.
• Always select the correct accessories of the correct
size and design for the job that you are attempting to
perform.
• Always work in a clean, safe, well-lit, organized and
adequately equipped area.
• Do not begin repairs without assurance that vehicle
is in secure position, and will not move during repair.
WARNING
WARNING
www.astrotools.com
1 YEAR LIMITED WARRANTY
PLEASE DO NOT RETURN ANY PRODUCT WITHOUT CALLING
1-800-221-9705 FOR INSTRUCTIONS
PRODUCT INFORMATION
BEFORE USE
DO NOT DISCARD – GIVE TO USER
• For press-in, bolt-in or otherwise corroded hubs that
should have come out with your 1st attempt but
refuse to be removed
• Simply use these impact rated bolts and nuts to
push against the knuckle assembly and
force the hub off
• Custom press bolts feature a ball bearing end and
work with included press feet to freely angle
against uneven surfaces
When unpacking, check the parts diagram and part
number listing on page 2 to make sure all parts are
included. If any parts are missing or damaged,
please call your distributor.
• Astro Pneumatic Tool Co. warrants our products to the original user
against defective material or workmanship for a period of 1 year
(except where noted on our price schedule) from the date of 1st use.
Astro reserves the right to determine whether the product failed
because of defective material, workmanship or other causes and to
charge back for missing parts. Astro Pneumatic Tool Co., at its
discretion, will repair products covered under this warranty free of
charge. The distributor should direct the original user to return the
product (with the exceptions listed below) with the distributor’s
name, address, adequate proof of date of purchase or a copy of
warranty card, and a short note explaining the problem. Failures
caused by accident, alteration, or misuse are not covered by
this warranty.
• If one part of this product fails, please do not return the entire
product. Astro will replace free of charge component parts of
this product that fail within 1 year of first use by the original
user. Items included in this category include but are not limited
to kits, hand tool kits and any other product where there are
multiple items or components that make up the unit. Please
contact the phone number below in order to obtain the
replacement components covered under warranty.
• Astro Pneumatic Tool Co. or its authorized service representatives
must perform all warranty repairs. Any repair to the product by
unauthorized service representatives voids this warranty. The rights
under this warranty are limited to the original user and may not be
transferred to subsequent owners.
• This warranty is in lieu of all other warranties, expressed or implied,
including warranties of merchantability and fitness for a particular
purpose. Some states do not allow the exclusion of limitations of
incidental or consequential damages so the above limitations may
not apply to you.

HUB TYPES
Some hubs will have holes already free to install the hub press
bolts and are ready to use as directed to press the hub out.
Product Type:Model: 78834 "LAST CHANCE" IMPACT RATED
HUB REMOVAL BOLT KIT
Page 2
If there is not sufficient space behind the hub to hammer
out and remove stud, it may require cutting 1 or more studs
shorter in order for hammering them through to allow the
stud length to come out the backside of the hub.
In many cases, removal of the hub is due to it needing to
be replaced, and the new hub will usually come with new
wheel studs installed.
Some hubs may require hammering out 1 or
more studs 1st before installing the press bolts.

INSTRUCTIONS
Often times there’s not just 1 solution to removing a stubborn hub. The below steps will remove most stuck jobs,
but sometimes the application of heat or the addition of another puller you were already attempting with such as
a slide hammer are best used in concert with this set to remove the most stubborn hubs.
1.Remove 1-2 wheel stud bolts in the process outlined above. (or 3 for extra tough jobs if you own two of these kits)
2.For 1/2" and M12 wheel studs and below use the smaller (M12) press bolts provided in the kit
with the corresponding nuts.
3.Place the press bolt(s) through the open available hub holes which when using 2 or
more should be opposite sides of the hub from each other.
4.Grease the nuts and bolts you’re about to use. Use the matching nuts included in
this set on the backside of the hub, threading the press bolts through them.
5.Before threading the press bolt all the way in, install a press foot on the end of the bolt end.
Room allowing this will distribute the force more evenly and prevent damage to the dust cover or knuckle.
If space does not allow for the installation of a foot, the bolt can be used bare within minimal marks left
on the dust cover or knuckle due to the ball bearing design. Dust cover can sometimes be removed 1st to
prevent damage of this as well.
6.With a 19mm or 3/4" socket on the bolt head and 15/16" or 24mm wrench holding onto the nut on the backside,
wrench by hand or with an impact wrench to apply force to the bolt and push against the knuckle. Work back and
forth alternating on each press bolt until the hub is busted free.
Product Type:Model: 78834 "LAST CHANCE" IMPACT RATED
HUB REMOVAL BOLT KIT
Page 3
FOOT
NUT
PRESS BOLT

Product Type:Model: 78834 "LAST CHANCE" IMPACT RATED
HUB REMOVAL BOLT KIT
Page 4
PARTS BREAKDOWN
107
Parts List
Qty
1
2
3
4
5
78834-01
78834-02
78834-03
78834-04
78834-05
M14x2.00 Bolts
M12x1.75 Bolts
M14x2.00 Nuts
M12x1.75 Nuts
Foot
Index Part No. Description
2
2
2
2
2
Call 1.800.221.9705 for questions concerning performance of the product
or other inquiries.
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1
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2
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