Maxxhaul 70238 Instruction Manual

Read and understand this entire manual before assembling,
installing, operating, or servicing this product.
SAVE THIS MANUAL
Instruction Manual
&
Parts Catalog
Hydraulic
Hitch Mounted
Pickup Truck Crane
Model 70238
Rev 05/12
Copyrightc2012 by Maxx Group, LLC 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 Maxx Group, LLC. Due
to continuing improvements, actual product may differ slightly from the product described herein.Tools required
for assembly and maintenance may not be included.

IMPORTANT SAFETY
INFORMATION
This is a SAFETY ALERT symbol.
It is used to alert you to
potential personal
injury hazards.
Obey all safety messages that follow this
symbol to avoid possible injury or death.
DANGER indicates a
hazardous situation which, if not avoided,
will result in death or injury.
WARNING indicates a
hazardous situation which, if not avoided,
could result in death or serious injury.
CAUTION indicates a
hazardous situation which, if not avoided,
could result in minor or moderate injury.
NOTICE indicates
important information which, if not followed,
may cause damage to equipment.
SAVE THIS MANUAL
Keep this manual for the safety warnings
and precautions. The manual offers impor-
tant information on how to assemble, use
and maintain this product.
Write the product’s model number and
purchase date on the cover page of this
manual.
Keep this manual (and your purchase re-
ceipt) in a safe place.
UNPACKING
The shipment should be thoroughly inspected as
soon as it is received. The signed “bill of lad-
ing” is acknowledgement by the carrier of receipt
in good condition or shipment covered by our
invoice. For your own protection, if any of the
goods called for on the bill of lading are shorted
or damaged, do not accept them until the carrier
makes a notation on the freight bill of the shorted
or damaged goods.
DANGER
WARNING
CAUTION
NOTICE
INSTRUCTION
MANUAL
WARNING concerning Risk of Eye
Injury. Wear ANSI approved eye
protection.
WARNING concerning Risk of
Hearing Loss. Wear hearing pro-
tection.
Model 70238 Page 2
D. Dress appropriately. Never wear loose
Contain long hair, and keep hair, clothing
and gloves away from moving parts.
E. Use common sense when working.
Stay alert and concentrate when setting up
and using this Crane. Never work while un-
-
cations.
IMPORTANT SAFETY
INSTRUCTIONS
1. Read and understand all
safety warnings and in-
structions. Failure to follow the warnings
and instructions may result in serious injury
or death. Save all warnings and instructions
for future reference.
2. Personal and Work Area Safety
A. Always wear ANSI approved
safety goggles.
B. Always wear hearing protec-
tection when working in
noisy environments. Prolonged exposure
to high intensity noise can cause hearing
loss.
C. Use safety equipment. Safe-
ty shoes, hard hat and work
gloves must be used for applicable condi-
tions.
Notify Maxx Group, LLC immediately if any hid-
den loss or damage is discovered after receipt.

Model 70238 Page 3
Personal and Work Area Safety (continued)
F. While assembling and using the Crane
keep work area clean and well lighted.
Keep spectators and children out of the
work area.
3. Use of the Hydraulic Hitch Mounted
Pickup Truck Crane
A. The Crane must be attached to a 2” x
2” Class III or Class IV receiver hitch. The
receiver hitch must be properly installed by a
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B. This Crane is designed to be positioned
outside the truck bed, and attached to the
vehicle via the receiver hitch. It is portable
and easy to adjust to different boom posi-
tions for 500, 750 and 1,000 Lbs. maximum
capacity. Do not modify the Crane and do
not use this product for purposes that it
was not designed for.
C. Never exceed the maximum 1,000 Lbs.
boom capacity. When attaching load to
Hook with Chain (8), use appropriate cou-
plings rated to handle the load. Couplings
must be fully engaged on the Hook, with the
Hook’s safety latch closed.
D. Never lift people or animals. Keep chil-
dren and spectators clear of the area under
and around the cargo being lifted. When
operating the Crane, stay clear of the area
betweeen the Crane and the load.
E. Before each use, inspect the Crane,
the Long Ram Jack and the Chain and
Hook for damage, corrosion and any
other condition that might affect the safe
performance of this product. Service to
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service technician.
F. Only set up the Crane when the pickup
truck is off the highway, in a clear loca-
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G. Before lifting cargo into the truck bed,
make sure the truck’s engine is OFF with
automatic transmission in PARK. Manual
transmission vehicle’s should be in gear.
Chock all wheels for added safety.
H. Adhere to all Department of Transpor-
tation (D.O.T.) requirements when using
this product.
I. Note the position of the vehicle’s ex-
haust pipes before setting up the Crane.
Flammable goods being lifted by the Crane
could come in contact with still hot exhaust
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J. Setting up the Crane, and maneuver-
ing heavy cargo on the Crane can be
strenuous and dangerous. This should
only be done by individuals who are
physically able to handle the demands of
these tasks.
K. The Crane is for lifting purposes only,
not for supporting loads. Quickly sup-
port the load with appropriate jack stands
or equivalent, if immediate loading or
unloading is not possible. Do not leave a
suspended load unattended.
L. Remove the Crane from vehicle’s re-
ceiver hitch when Crane is not in use.
M. Always be aware of dynamic loading.
An excess load may be created for a brief
instant by a sudden tug or weight gain,
which can result in damage to the Crane,
the cargo, and/or personal injury.
Keep in mind that the warnings previous-
ly discussed cannot cover all possible
events and circumstances. It is impor-
tant that the person setting up, loading/
unloading and using this product use
common sense at all times.

Model 70238 Page 4
Assembling and Setting Up the Hydraulic
Hitch Mounted Pickup Truck Crane
1. Refer to the Parts List and Assembly
Diagram at the end of this manual when fol-
lowing the steps below.
Always wear ANSI aproved
safety goggles when
assembling, setting-upand
using this product.
Component parts are heavy. Be careful not
Assistance from a helper will make product
set-up much easier.
2. Set all components on the ground (see
photo below)
3. Insert shank of T-Shaped Connector (5)
into the pickup truck’s receiver hitch -see
photo upper right.
The receiver hitch must be 2” x 2” and rated
Class III or Class IV.
Maxx Group LLC is not responsible for the
attachment or the installation of this
product. The attachment of this product is
critical and beyond the control of Maxx
Group LLC Failure to follow
all instructions and safety warnings can
result in an accident, injury and/or prop-
erty damage. Maxx Group LLC neither
guarantees, nor will it be liable for any
damage resulting from the Hydraulic Hitch
mounted Pickup Truck Crane’s attachment
or improper use.
4. Align the hole
openings on
receiver hitch
and T-Shaped
Connector and
put the Hitch Pin
(32) in place.
Secure Hitch Pin
with the Safety Pin (33).
5. Next, use Snapper Pins (22) to attach the
2 Legs (6)
and 2 Link
Bars (7) to
the Base
Assembly
(4) - see
photo to
right.
Note: The straight tube section of the Base
Assembly must be assembled so that it is
parallel with the ground surface, and the
same height as the vehicle’s receiver hitch
measure the distance of the vehicle’s receiv-
er hitch to the ground.
Receiver Hitch
T-Shaped
Connector (5)
Hitch Pin (32) and Safety Pin (33)
Straight Tube
of Base
Assembly (4)
Leg (6)
Straight tube
section of
Base Assem-
bly (4) must be
parallel with
ground and the
same height
as vehicle’s
receiver hitch.
Jack Handle (15)
Boom (1)
Jack (3)
Post (2)
Leg (6)
Link Bar (7) Base
Assy.
(4)
T-Shaped
Con-
nector
(5)
Link Bar (7)
Snapper
Pins (22)
Leg
Extender
(23)

Model 70238 Page 5
When assembling Legs (6), adjustments to
Leg Extenders (23) and Link Bars (7) are
needed to assure that the straight tube sec-
tion of the Base Assembly is the same height
as the vehicle’s receiver hitch.
Attach upper end of each Leg to the Base
Assembly (4) using Snapper Pin (22).
The Link Bar (7) connects middle portion of
each Leg to the Base Assembly. Note the
different hole attachment positions (this will
affect the height of the straight tube section
of the Base Assembly).
Use Snapper Pins (22) to secure the Link
Bars (7) in place. Compare the height of
straight tube section of Base Assembly to
height of vehicle’s receiver hitch; they should
be the same height.
Additional height adjustments can be made
to the Leg Extenders (23) by re-positioning
the Bolt (27) and Lock Nut (28) to different
hole positions. Make adjustments as
needed, and secure the Link Bars (7) in
place with the Snapper Pins (22).
6. With Leg assembly now complete, slide
the end of straight tube section of Base As-
sembly into the T-Shaped Connector (5).
Lock these components together by tighten-
ing two Bolts (31).
7. Test the stability of the bottom half of the
on the ground. Make sure that the T-Shaped
Connector (5) is solidly connecting the
Crane to the vehicle’s receiver hitch. The
straight tube section of the Base Assembly
(4) should be parallel to the ground. Make
sure all hardware and clips are tightly se-
cured in place.
8. Setting up the Boom (1)/Post (2)/Long
Ram Jack (3) assembly:
Identify the three components per the photo
above right, and connect the three together
Hydraulic
Release Valve
Jack Handle (15)
using the Bolt/Lock Nut combinations noted
in the photo.
Once the three components are assembled,
make sure they are folded together and held
in place with the adhesive strap. With assis-
tance, carefully lift the Boom/Post/Long Ram
Jack assembly into place on top of the Base
hardware connections. - see photo above
right. Note the Stop Pin (18) - see photo
below. The Boom can swivel
from side to side; Stop Pin is
inserted in either Stop 1 (19)
or Stop 2 (20) location.
9. Remove the adhesive strap
and open up the Boom (1).
Before using the Jack Handle
to raise and lower the Boom,
identify the location of the
hydraulic release valve (see
photo below left). With the
use of the Jack Handle, close the release
valve completely (turn clockwise all the way)
before attempting to raise the Boom. Now
insert Jack Handle and pump handle to raise
Boom.
Stop
Pin
(18)
Boom (1)
Post (2)
Long Ram Jack (3)
Bolt (11)
Nut (12)
Bolt (13)
Nut (14)
Bolt (16)
Nut (17)

7. Attach the cargo to the Boom’s Hook.
8. Use the Jack Handle to close the hydrau-
lic release valve (turn clockwise completely),
and then pump Jack Handle to slowly raise
the Boom and the cargo.
9. With the cargo raised, the Post (2) can be
piveted to move the cargo into the truck bed.
10. With the cargo positioned over the truck
bed, slowly turn the hydraulic release valve
counterclockwise and the cargo will be low-
ered to the truck bed.
11. Remove the cargo’s coupler from the
Boom Hook and swing back the Boom to its
original positioion.
12. If work is done, dis-assemble the Crane
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tion. Remove the Jack Handle (15). Next,
fold the Boom (1) to its closed position and
with assistance, lift it off the Base Assembly.
Disconnect the Crane from the pickup truck
by removing the T-Shaped Connector from
the vehicle’s receiver hitch. Legs (6) can
then be folded up. Use the storage Straps
(38 and 39) to hold the folded components in
place while not in use - see photo below.
Maintaining the Hydraulic Hitch
Mounted Pickup Truck Crane
1. Frequently check the condition of the
Crane and the pickup truck’s receiver hitch.
Make sure all components are in good con-
dition. If the Crane or receiver hitch become
damaged through accident, or if any other
Model 70238 Page 6
500 Lbs. 750 Lbs. 1,000 Lbs.
Weight Capacity
Strap (38)
Operating the PickupTruck Crane
1. With the pickup truck and the Crane prop-
erly and safely positioned next to the cargo
to be lifted, the Crane is ready to be opera-
tional.
2. Know the weight of the cargo to be lifted.
The cargo must be properly strapped and
have attachment couplings that will attach to
the Crane’s Hook.
3. The lift range of the Crane is between 30”
off the ground to 84” high.
4. Attach the Hook with Chain (8) to the
correct maximum weight capacity on the
Boom (1) - see photo below. There are 3
maximum weight settings: 500 Lbs., 750
Lbs., and 1,000 Lbs. Remove Lock Nut (10)
and Bolt (9) and re-position Hook with Chain,
as needed, to make sure that the weight of
cargo being lifted falls below the maximum
weight setting chosen. Replace Bolt and
Lock Nut to hold Hook with Chain in place.
5. Swing the Boom (1) so that it is facing
the cargo to be lifted. The cargo must be
properly strapped and have a hanging cou-
pler that will be compatible with the Crane’s
Hook.
6. Raise the Boom (1) as previously de-
scribed (close release valve completely and
pump Jack Handle), or lower the Boom as
needed.
Note: Slowly turning the release valve
counterclockwise will lower the Boom. Be
alert as the Boom will quickly descend to its
lowest position.

SPECIFICATIONS
3 Boom Positions and
Weight Capacities
500, 750 and 1,000 Lbs.
Lift Range From 30” off ground to
84” high
For Use With 2” x 2” Class III and IV
Receiver Hitch
Crane Swivel 360 Degrees
Limited Warranty
Maxx Group, LLC warrants to the original
retail purchaser that the product is free of
defects in material and workmanship at the
time of shipment. This Hydraulic Hitch Mounted
Pickup Truck Crane is warranteed for 90
days from the date of purchase. This war-
ranty is expressly in lieu of all other warran-
ties, express or implied.
Proof of purchase is required for warranty
transactions; a copy of the original invoice
or sales receipt is required.
type of damage is noted, they should be
replaced.
Check to make sure that all hardware is
tightly secured in place.
Long Ram Jack is decreasing, it may be due
to air being trapped within the hydraulic sys-
tem. In this situation, the hydraulic sys-
tem needs to be bled of this excess air.
A. Use the Jack Handle to open the air
release valve; turn Jack Handle about 1
turn counterclockwise.
of the Jack - see photo below.
Carefully turn it and pull
it out.
C. Pump the Jack Handle
rapidly for several cycles to
remove excess air from the
system.
D. Turn air release valve
clockwise to close the
system.
E. Carefully replace the
3. Keep the Crane clean
and periodically lubricate
moving parts.
4. Replacing hydraulic oil: It is important
that hydraulic oil be replaced at least once
per year (or more, if Crane is frequently
used). Only use a good quality hydraulic oil
and never mix different brands of oil togeth-
er.
To change hydraulic oil:
A. Remove the Jack from the Crane. Lower
the Jack’s ram completely.
Jack and remove it.
C. Drain the old oil from the hydraulic sys-
tem.
D. Fill the hydraulic system with new high
E. Bleed air from the hydraulic system (see
previous instructions (paragraph #2 to the
left).
F. Top off the hydraulic system with more oil
Model 70238 Page 7
Oil Fill
Plug

Model 70238 Page 8
Parts List
Assembly Drawing
Note: The Parts List and Assembly
Diagram is provided as a reference tool
only. Some parts are listed and shown
for illustration purposes only, and are
not available as replacement parts. All
repairs to this tool (including replacing
parts) should only be done by a quali-
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Part # Description Qty.
Part # Description Qty.
1 Boom 1
2 Post 1
3 Long Ram Jack 1
4 Base Assembly 1
5 T-Shaped Connector 1
6 Leg 2
7 Link Bar 2
8 Hook with Chain 1
9 Bolt 1
10 Lock Nut 1
11 Bolt 1
12 Lock Nut 1
13 Bolt 1
14 Lock Nut 1
15 Jack Handle 1
16 Bolt 1
17 Lock Nut 1
18 Stop Pin 1
19 Stop I 1
20 Stop II 1
22 Snapper Pin 6
23 Leg Extender 2
24 Foot Plate 2
25 Bolt 2
26 Lock Nut 2
27 Bolt 2
28 Lock Nut 2
29 Pin 1
30 R-Pin 1
31 Bolt 2
32 Hitch Pin 1
33 Safety Pin 1
34 Bearing 1
35 Thrust Bearing 1
36 Bearing Cover 1
37 Protecting Housing 1
38 Strap 1
39 Strap 2
40 Retaining Ring 1
41 Cap Plate 1