Pittsburgh 58755 Assembly instructions

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Item 58755
Weight Capacity 2 Tons (4,000 Lb.)
Maximum Height 90.5"
Minimum Height 17.75"
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 (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. 22k
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©2022 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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Table of Contents
Safety ......................................................... 2
Specifications ............................................. 3
Setup .......................................................... 4
Operation.................................................... 7
Maintenance............................................... 8
Parts List and Diagram.............................. 10
Warranty .................................................... 12
WARNING SYMBOLS AND DEFINITIONS
This is the 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.
Indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
Addresses practices not related to personal injury.
IMPORTANT SAFETY INFORMATION
General Safety Warnings
1. Study, understand, and follow all instructions
before operating this device.
2. Do not exceed rated capacity.
3. Use only on a hard, level surface
capable of supporting the load.
4. Before moving, lower the load to
the lowest possible height.
5. Failure to heed these markings may result in
personal injury and/or property damage.
6. Use only slings or chains with a rated capacity
greater than the weight of the load being lifted.
7. Do not allow load to swing or drop
violently while lowering or moving.
8. No alterations shall be made to this product.
9. Do not move Shop Crane when under load.
10. Attach application to Shop Crane using fitted
sling that is rated for weight being lifted.
11. Do not adjust safety valve.
12. Secure Boom in proper setting before use.
13. Follow capacities marked on Boom;
capacity decreases as boom lengthens.
14. Wear ANSI-approved safety goggles and
heavy-duty work gloves during use.
15. Verify replacement Jack has same rating,
mounting points and maximum length.
16. Do not use for aircraft purposes.
17. Inspect before every use; do not use
if parts loose or damaged.
18. Keep your work area clean and well lit.
Cluttered work areas invite accidents.
19. Keep bystanders, children, and visitors
away while operating Shop Crane.
Distractions can cause loss of control.
20. Stay alert. Watch what you are doing, and use
common sense when operating a Shop Crane.
Do not use a Shop Crane while tired or under
influence of drugs, alcohol, or medication. A
moment of inattention while operating Shop Crane
may result in serious personal injury.
SAFETY OPERATION MAINTENANCESETUP

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21. Follow instructions in “Maintenance and Servicing”
section of this manual. Use of unauthorized parts or
failure to follow maintenance instructions may create
a risk of injury and may void any applicable warranty.
22. Maintain labels and nameplates on Shop
Crane. These carry important information.
If unreadable or missing, contact
Harbor Freight Tools for a replacement.
23. Before use, read manufacturer’s instruction
manual for object you will lift.
24. Industrial applications must follow
OSHA requirements.
25. The warnings, precautions, and instructions
discussed in this manual cannot cover all possible
conditions and situations that may occur. The
operator must understand that common sense and
caution are factors, which cannot be built into this
product, but must be supplied by the operator.
SAVE THESE INSTRUCTIONS.
Specifications
Specifications
Shop Crane Weight 197.1 Lb.
Boom Height 17.75″ - 75.2″
at position 4.
Boom Length 41″ - 62.4″
Jack Hydraulic
Oil Type 15#
Boom Positions
Max Lifting Capacity
1/2 Ton - 1,000 Lb. Position 1
1 Ton - 2,000 Lb. Position 2
1-1/2 Ton - 3,000 Lb. Position 3
2 Ton - 4,000 Lb. Position 4
Assembly
Part
#8
14x100
mm
Part
#11
16x80
mm
Part
#20
16x90
mm
Part
#15
16x100
mm
Part
#16
16x110
mm
Part
#25
8x20
mm
Part
#29
8x12
mm
Part
#2
12x80
mm
SAFETYOPERATIONMAINTENANCE SETUP

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TO PREVENT SERIOUS INJURY AND DEATH: The correct bolts must be used
during assembly. Carefully compare bolts to Bolt Identification illustration above and the measurements
shown in the parts list and assembly diagrams near the end of this manual to make sure that the correct
bolts are used in the correct place.
WARNING! TO PREVENT SERIOUS INJURY: For safety and ease of
assembly, use two people to assemble the Shop Crane.
CAUTION! DO NOT TIGHTEN ANY BOLTS UNTIL YOU ARE FULLY FINISHED WITH ASSEMBLY.
OTHERWISE PARTS WILL NOT LINE UP PROPERLY.
1. Place Base (21) on a secure, level surface.
2. Place two 3-1/2″ Swivel Caster
with Brake (33) on Base.
3. Install eight Bolts M8x20 (25) into Casters and Base.
4. Install eight Lock Washers (23) onto Bolts.
5. Install eight Nuts M8 (22) onto Bolts.
6. Tighten Nuts M8.
Base (21)
Nut
M8 (22)
Lock
Washer
(23)
Bolt M8x20 (25) 3-1/2″ Swivel Caster
with Brake (33)
7. Place two 3″ Swivel Casters (28) on Base.
8. Install eight Lock Washers (23)
onto eight Bolts M8x12 (29).
9. Install eight Bolts and Lock Washers
into Casters and Base.
10. Tighten eight Bolts.
Bolt M8x12 (29)
Lock Washer (23) 3″ Swivel
Caster (28)
Base (21)
11. Install two Movable Brackets (34) onto
Legs with loops facing outward.
12. Place two Leg (30) into Base.
13. Install four Lock Pin (26) into Base and Legs.
14. Place four R-Pin (27) onto Lock Pins.
Base (21)
Lock Pin (26)
Movable
Bracket (34)
Leg (30)
Leg (30)
R-Pin (27)
15. Install Main Post (14) onto Base.
16. Install two Hex Bolts M14x100 (8)
through Main Post and Base.
17. Place two Flat Washers (9) onto Bolts.
SAFETY OPERATION MAINTENANCESETUP

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Note: Do not tighten two Nuts M14 (10)
until Shop Crane is fully assembled.
18. Place two Nuts M14 (10) onto Bolts then
thread two Nuts onto Bolts by hand until
snug and then loosen a few turns.
Hex Bolt M14x100 (8)
Flat Washer (9)
Nut M14 (10)
Main Post (14)
(Do Not
Tighten)
Base (21)
19. Place Handrail (31) onto Main Post then place
Support Straps (17) onto Handrail, refer to Figure A:
Handrail and Support Strap Configuration.
20. Install Hex Bolt M16x110 (16) through
Support Strap, Handrail flange, Main Post,
Handrail flange and Support Strap.
21. Place Flat Washer (12) onto Bolt.
22. Place Nut M16 (13) onto Bolt then thread Nut onto
Bolt by hand until snug and then loosen a few turns.
23. Place two Support Straps (17) onto inner Base (21).
Ensure Support Straps angle towards Main Post.
24. Install two Hex Bolts M16x100 (15)
through Base and Support Straps.
25. Place two Flat Washers (12) onto Bolts.
Note: Do not tighten two Nuts M16 (13)
until Shop Crane is fully assembled.
26. Place two Nuts M16 (13) onto Bolts then
thread two Nuts onto Bolts by hand until
snug and then loosen a few turns.
Support Strap (17)
Flat
Washer (12)
Flat Washer (12)
Nut
M16 (13)
Nut M16 (13)
Hex Bolt
M16x100 (15)
Hex Bolt
M16x110 (16)
Handrail (31)
Main
Post (14)
Leg (30)
Base
(21)
Figure A: Handrail and Support Strap Configuration.
27. Tighten two Nuts M14 (10) on Main Post and Base.
28. Tighten two Nuts M16 (13) on
Base and Support Straps.
29. Tighten Nut M16 (13) on Support Straps,
Handrail and Main Post.
30. Place Boom (7) into Main Post.
31. Install Hex Bolt M16x110 (16)
through Main Post and Boom.
32. Place Flat Washer (12) onto Bolt.
33. Place Nut M16 (13) onto Bolt.
34. Tighten Nut.
Hex Bolt M16x110 (16)
Boom (7)
Flat Washer (12)
Nut M16 (13)
Main Post (14)
35. Place lower Jack (19) onto Main Post (14)
flange with Handle insert facing outward.
36. Install Hex Bolt M16x90 (20) through
Main Post flange and Jack.
37. Place Jack cylinder into Boom (7) flange.
38. Install Hex Bolt M16x80 (11) through
Boom flange and Jack cylinder.
39. Place Flat Washer (12) onto Hex Bolt M16x80 (11).
SAFETYOPERATIONMAINTENANCE SETUP

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40. Place Nut M16 (13) on Bolt.
41. Tighten Nut.
42. Place Flat Washer (12) onto Hex Bolt M16x90 (20).
43. Place Nut M16 (13) onto Bolt.
44. Tighten Nut.
Jack (19)
Hex Bolt
M16x90 (20)
Hex Bolt
M16x80 (11)
Flat Washer (12)
Flat Washer (12)
Nut M16 (13)
Nut M16 (13)
Main Post (14)
Boom (7)
45. Place Boom Extension (6) into Boom (7).
46. Install Long Pin (32) through Boom and Boom
Extension, and attach R-Pin (27) to end of Long Pin.
Long Pin (32)
R-Pin (27)
Boom
Extension (6)
Boom (7)
SAFETY OPERATION MAINTENANCESETUP

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Operating Instructions
Read ENTIRE IMPORTANT SAFETY INFORMATION section at beginning of this manual
including all text under subheadings therein before set up or use of this product.
Note: Once Assembly is complete, tighten ALL Bolts before initial operation.
Lifting and Lowering
1. Locate hole on Boom (7) with a weight limit higher
than weight to be lifted.
For example: Locate 1 TON hole on Boom
for a load that is under one Ton.
2 Ton 1-1/2 Ton 1 Ton 1/2 Ton
2. Adjust Boom Extension (6) so hole furthest
from Hook and Chain (1) aligns with chosen
hole on Boom. Secure into place by inserting
Long Pin (32) through all aligned holes,
then place R-Pin (27) onto Long Pin.
Long Pin (32)
R-Pin (27)
WARNING! Do not stand under an object that is
being lifted by Shop Crane. Be aware of possibility
of a load slipping off Hook and Chain. An item that
falls from Shop Crane can cause serious injury.
3. Move Shop Crane so that Hook and Chain
is directly above item to be lifted.
4. Securely attach Hook and Chain to item.
WARNING! TO PREVENT SERIOUS INJURY:
Fully tighten release valve or else Jack may
lower or may not be able to reach full height.
5. To raise Boom, turn Jack’s release valve fully
clockwise (right). Insert Handle (18) into Jack
and pump (up and down) repeatedly until
item has been lifted to desired height.
WARNING! TO PREVENT SERIOUS INJURY:
DO NOT MOVE SHOP CRANE WHEN UNDER
LOAD. Casters are not designed to be rolled
when Shop Crane is lifting heavy objects.
6. To lower Shop Crane, SLOWLY turn Jack’s
release valve counterclockwise (left).
Folding the Frame
WARNING! Do not fold Shop Crane while loaded.
1. Lower Shop Crane all the way.
2. Remove both forward R-Pins from
Base and Legs and remove Lock Pins.
Leave rear Lock Pins installed.
3. Raise Leg completely.
4. To lock Legs in upright position, insert a front
Lock Pin into hole closest and just above rear
Lock Pin on Base for each Leg, then install R-Pins.
Bleeding Instructions
IMPORTANT! Before first use, check for
hydraulic oil leaks and thoroughly test equipment.
If it does not work properly, bleed excess air
from its hydraulic system as follows:
1. Fully turn Release Valve (counter
clockwise) and lower Jack completely.
2. Insert Handle into Jack.
3. Apply downward pressure to Boom and
pump Handle quickly several times.
4. Turn Release Valve (clockwise).
5. Test Shop Crane several times for proper operation
before attempting to lift a load. If, after bleeding,
equipment still does not appear to be working
properly, do not use equipment until it has been
repaired by a qualified service technician.
SAFETYOPERATIONMAINTENANCE SETUP

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Maintenance and Servicing
Procedures not specifically explained in this manual must be performed only by a qualified technician.
TO PREVENT SERIOUS INJURY FROM ACCIDENTAL OPERATION: Do not use damaged equipment. If abnormal noise
or vibration occurs, have the problem corrected before further use.
Cleaning, Maintenance, and Lubrication
1. Before each use, inspect the general condition of
Shop Crane. Check for broken, cracked, or bent
parts, loose or missing parts, and any condition that
may affect proper operation of product. If a problem
occurs, have problem corrected before further use.
Do not use damaged equipment.
2. Before each use, thoroughly test Shop Crane
for proper operation prior to its actual use. If
Shop Crane appears not to be working properly,
follow Bleeding instructions on page 7.
3. Change hydraulic oil at least
once every three years:
a. With Jack fully lowered, remove Oil
Filler Plug on the side of Housing.
b. Tip Jack to allow the old hydraulic oil to drain out
of the Housing completely, and dispose of old
hydraulic oil in accordance with local regulations.
c. With Jack upright, completely fill Housing
with 15# hydraulic oil (not included) until
oil just begins to run out of Oil Fill Hole.
d. Open Release Valve, then pump Handle
to bleed air from the system.
e. Reinstall Oil Filler Plug.
4. Wipe dry with a clean cloth. Then, store
Shop Crane in a safe, dry location out of reach
of children and other non-authorized people.
SAFETY OPERATION MAINTENANCESETUP

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Troubleshooting
TO PREVENT SERIOUS INJURY: Use caution when troubleshooting malfunctioning
jack. Stay clear of supported load. Completely resolve all problems before use. If
solutions presented in Troubleshooting guide do not solve the problem, have a qualified technician inspect and
repair jack before use. After jack is repaired: Test it carefully without a load by raising and lowering it fully,
checking for proper operation, BEFORE RETURNING JACK TO OPERATION.
DO NOT USE A DAMAGED OR
MALFUNCTIONING JACK!
POSSIBLE SYMPTOMS
PROBABLE SOLUTION
(Make certain that the Jack
is not supporting a load
while attempting a solution.)
Jack will
not lift at
its weight
capacity
Chain
and/or
Hook
lowers
under
load
Pump
stroke
feels
spongy
Chain
and/or
Hook
will not
lift all
the way
Handle
moves
up when
Jack is
under
load
Oil
leaking
from
Filler
Plug
X X
Check that Release Valve is
closed fully.
Bleed air from the system.
X X X
Valves may be blocked and may
not close fully. To flush the valves:
1. Lower the Hook and
Chain and securely close
the Release Valve.
2. Manually lift the Hook and
Chain several inches.
3. Open the release valve and
force the Hook and Chain
down as quickly as possible.
XX X
Jack may be low on oil. Check
the oil level and refill if needed.
Jack may require bleeding -
see instructions on page 9.
X
Unit may have too much
hydraulic oil inside, check fluid
level and adjust if needed.
PLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND ASSEMBLY DIAGRAM
IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER OR DISTRIBUTOR
MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE BUYER THAT HE OR SHE IS
QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT, OR THAT HE OR SHE IS QUALIFIED TO REPLACE
ANY PARTS OF THE PRODUCT. IN FACT, THE MANUFACTURER AND/OR DISTRIBUTOR EXPRESSLY
STATES THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND
LICENSED TECHNICIANS, AND NOT BY THE BUYER. THE BUYER ASSUMES ALL RISK AND LIABILITY
ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS
THERETO, OR ARISING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO.
SAFETYOPERATIONMAINTENANCE SETUP

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Parts List and Diagram
Parts List
Part Description Qty
1 Hook and Chain 1
2 Hex Bolt M12x80 1
3 Lock Washer 1
4 Flat Washer 1
5 Nut M12 1
6 Boom Extension 1
7 Boom 1
8 Hex Bolt M14x100 2
9 Flat Washer 2
10 Nut M14 2
11 Hex Bolt M16x80 1
12 Flat Washer 6
13 Nut M16 6
14 Main Post 1
15 Hex Bolt M16x100 2
16 Hex Bolt M16x110 2
17 Support Strap 2
Part Description Qty
18 Handle 1
19 Jack 1
20 Hex Bolt M16x90 1
21 Base 1
22 Nut M8 16
23 Lock Washer 24
24 3½” Swivel Caster 2
25 Hex Bolt M8x20 16
26 Lock Pin 4
27 R-Pin 5
28 3″ Swivel Caster 2
29 Hex Bolt M8x12 8
30 Leg 2
31 Handrail 1
32 Long Pin 1
33 3½” Swivel Caster with Brake 2
34 Movable Bracket 2
Record Product’s Serial Number Here:
Note: If product has no serial number, record month and year of purchase instead.
Note: Some parts are listed and shown for illustration purposes only, and are not available
individually as replacement parts. Specify UPC 193175446237 when ordering parts.
SAFETY OPERATION MAINTENANCESETUP