Long Chassis
Hydraulic
Service Jacks
Operating Instructions & Parts Manual
Model Number
Atd-7390
Atd-7391
Capacity
5 Ton
10 Ton
Atd Tools Inc.
160 Enterprise Drive, Wentzville MO 63385
Printed in China
ATD7390-M0 rev 03/07
Save these instructions. For your safety, read, understand, and follow the information provided with and on this jack.
The owner and operator of this equipment shall have an understanding of this jack and safe operating procedures
before attempting to use. The owner and operator shall be aware that use and repair of this product may require
special skills and knowledge. Instructions and safety information shall be conveyed in the operator's native language
before use of this jack is authorized. If any doubt exists as to the safe and proper use of this jack, remove from service
immediately. Inspect before each use. Do not use if broken, bent, cracked, or damaged parts (including labels)
are noted. Any jack that appears damaged in any way, operates abnormally or is missing parts, shall be removed
from service immediately. If the jack has been or suspected to have been subjected to a shock load (a load dropped
suddenly, unexpectedly upon it), immediately discontinue use until jack has been checked by an authorized factory
service center. It is recommended that an annual inspection be done by qualified personnel. Labels and Operator's
Manuals are available from manufacturer (see Replacement Parts, pages 5 thru 7).
PRODUCT DESCRIPTION
Atd Tools Long Chassis Hydraulic Service Jacks are designed to lift, not sustain, rated capacity loads. They are
designed to be used in conjunction with jack stands. Intended use: To lift one axle of a vehicle for the purpose of
service and/or repair of vehicle components. After lifting, loads must be immediately supported by appropriately
rated jack stands. Check with vehicle owner's manual for proper lift points.
DO NOT USE TO DOLLY OR MOVE VEHICLE. DO NOT USE FOR ANY PURPOSE OTHER THAN THOSE USES
OUTLINED ABOVE!
SPECIFICATIONS
Model
Atd-7390
Atd-7391
Handle Position Lock
Handle Sleeve
Capacity
10 Ton
Foot Pedal
5 Ton
Jack Size ( L x W x H)
57 3/4" x 17" x 7 5/8"
54 3/4" x 20" x 12 3/4"
Handle
Oil Filler Plug/Screw
(on Reservoir)
Min. Height
7"
7"
Release Valve
(Handle Knob)
Max. Height
27"
27"
Grease Fitting Nipple
Ram Extend
Saddle
5"
6 1/2"
Front Wheel
Saddle Dia.
6 1/2"
7 3/8"
Rear Caster
Figure 1 - Typical Long Chassis Jack Nomenclature (Atd-7390 shown)
2
ASSEMBLY
Always secure the handle into the handle sleeve by
means of the bolt lock washer and nut provided. Tighten
securely to prevent accidental removal of handle while
in use. Familiarize yourself with the illustrations in the
operator's manual. Know your jack and how it operates
before attempting to use.
BEFORE USE
1. Verify that the product and the application are
compatible, if in doubt call Atd Tools Technical
Service (636) 327-9050.
2. Before using this product, read the operator's manual
completely and familiarize yourself thoroughly with
the product, its components and recognize the
potential hazards associated with its use.
3. Open the release valve by turning the handle counterclockwise (no more than 1/2 full turn).
4. With saddle fully lowered, locate and remove the
oil filler plug/screw. Pump handle 6 to 8 full strokes.
Ensure the oil level is within ~ 3/16" from the inner
cylinder as viewed from the oil filler hole. Reinstall
the oil filler plug/screw. Close release valve by turning
the handle clockwise until firm resistance is felt.
5. Check to ensure that jack rolls freely, that the pump
and release valve operate smoothly. Raise and lower
the unloaded saddle throughout the advertised lift
range before putting into service.
6. Replace worn or damaged parts and assemblies
with factory authorized replacement parts only. (See
Replacement Parts Section). Lubricate as instructed
in Maintenance Section.
OPERATION
Lifting
! CAUTION
Lift only on areas of the vehicle as specified by the
vehicle manufacturer.
Do not use adapters or accessories that are not
provided initially.
The resulting of overload my cause hydraulic
system failure.
1. Place vehicle in park, with emergency brake on and
wheels securely chocked to prevent inadvertent
vehicle movement.
2. Locate and close release valve by turning handle
clockwise, firmly. Center jack saddle under lift
point.
3. Verify lift point, then use handle pump to contact lift
point. To lift, pump handle until load reaches desired
height.
4. Transfer the load immediately to appropriately rated
jack stands.
! WARNING
To avoid crushing and
related injuries:
NEVER work on, under or
around a load supported
only by jack. ALWAYS
use adequately rated jack
stands.
! WARNING
• Study, understand, and follow all printed materials
provided with/on this product before use.
• Do not exceed rated capacity.
• This is a lifting device only.
• Use only on hard, level surfaces capable of
supporting rated capacity loads.
• After lifting, immediately transfer the load to
appropriately rated vehicle stands.
• Never work on, under, or around a load supported
by this device only.
• Do not move or dolly loads with this device.
• No alterations shall be made on this product.
• Failure to heed these markings may result in
personal injury and/or property damage.
Lowering
! WARNING
Be sure all tools and personnel are clear before
lowering load.
1. Raise load high enough to clear the jack stands,
then carefully remove jack stands (always used in
pairs).
2. Slowly turn the handle counterclockwise, but no more
than 1/2 turn. If the load fails to lower:
a. Use another jack to raise the vehicle high
enough to reinstall jack stands.
b. Remove the affected jack and then the stands.
c. Using the other jack, lower the load by turning
the operating handle counter-clockwise, but no
more than 1/2 turn.
3. After removing jack from under the load, push
saddle down to reduce ram exposure to rust and
contamination.
3
MAINTENANCE
Important: Use only good grade hydraulic jack oil. Avoid
mixing different types of fluid and NEVER use brake
fluid, turbine oil, transmission fluid, motor oil or glycerin.
Improper fluid can cause premature failure of the jack
and the potential for sudden and immediate loss of load.
We recommend Mobil DTE 13M or equivalent.
Adding oil
1. With saddle fully lowered set jack in its upright, level
position. Locate and remove oil filler plug/screw.
2. Fill with oil until ~3/16" above the inner cylinder as
seen from the oil filler hole. Reinstall the oil filler
plug/screw.
Changing oil
For best performance and longest life, replace the
complete fluid supply at least once per year.
1. With saddle fully lowered, remove the oil filler plug/
screw.
2. Lay the jack on its side and drain the fluid into a
suitable container.
Note. Dispose of hydraulic fluid in accordance with
local regulations.
3. Fill with oil until ~3/16" above the inner cylinder as seen
from the oil filler hole. Reinstall oil filler plug/screw.
Lubrication
A periodic coating of light lubricating oil to pivot points,
axles and hinges will help to pre
wheels, casters and pump assemblies move freely.
Cleaning
Periodically check the pump piston and ram for signs
of rust or corrosion. Clean as needed and wipe with
an oily cloth.
Note: Never use sandpaper or abrasive material on
these surfaces!
Storage
When not in use, store the jack with saddle fully
lowered.
vent rust and assure that
REPLACEMENT PARTS
(refer to page 5 thru 7)
Not all components of the jack are replacement items,
but are illustrated as a convenient reference of parts
location. When ordering parts, give part number and
parts description.
TROUBLESHOOTING
Symptom
Jack will not lift load
Jack will lift, but not maintain
pressure
Jack will not lower after
unloading
Poor lift performance
Will not lift to full extension
Possible Causes
• Release valve not tightly closed
• Overload condition
• Release valve not tightly closed
• Overload condition
• Hydraulic unit malfunction
• Reservoir overfilled
• Linkage binding
• Fluid level low
• Air trapped in system
• Fluid level low
4
Corrective Action
• Ensure release valve tightly closed
• Remedy overload condition
• Ensure release valve tightly closed
• Remedy overload condition
• Contact Atd Tech. Service
• Ensure load is removed, then drain
fluid to proper level
• Clean and lubricate moving parts
• Ensure proper fluid level
• With ram fully retracted, remove
oil filler plug to let pressurized air
escape, then reinstall oil filler plug
• Ensure proper fluid level
Replacement Parts Illustration for model Atd-7390
23
24
31
29
17
22
21
F
6
A
G
7
8
E
D
4
5
I
I
H
H
34
9
13
28
32
3
2
C
B
A
1
14
11
12
15
16
30
26
25
42
27
10
J
20
33
19
18
Figure 2 - Replacement Parts Illustration for Model Atd-7390
5
Replacement Parts Illustration for model Atd-7391
29
17
22
31
F
A
6
G
E
D
7
8
I
H
34
9
16
23
25
24
30
21
33
20
19
32
3
18
13
14
15
2
C
B
1
A
J
10
4
5
11
26
27
42
Figure 3 - Replacement Parts Illustration for Model Atd-7391
6
Replacement Parts List for Atd-7390 & Atd-7391
Item Part# for Atd-7390 Part# for Atd-7391 Description Qty
1 G251-20008-000 Filter 1
2 G250-20002-000 G100-40003-000 Reservoir 1
3a 5905-00100-200 N/A Filler Plug 1
3b N/A G62S-03301-000 Filler Screw 1
4 5901-00071-000 O-ring, D7.1x2.65 1
5 G250-20004-000 G251-20004-000 Release Valve 1
6 G250-24000-000 G100-43000-000 Hyd. Cartridge 1
7 B300-14002-000 Washer 1
8 G651-31002-000 Pump Cylinder 1
9 G651-31001-000 Pump Piston 1
10 G250-23000-000 G100-44000-000 Hyd. Cartridge 1
11 G250-30000-000 G100-90009-K04 Universal Joint 1
12 G251-00005-000 N/A Spring 1
13 5405-12036-000 5405-12039-000 Pin 2
14 5405-02028-000 Retaining Pin 2
15 G250-50000-000 G100-70000-000 Piston Link 1
16 G251-00004-000 G100-00015-000 (2 pc.) Return Spring, Pedal 1
17a 5110-06016-000 N/A Screw 1
17b N/A 5402-05025-000 Pin 1
18 G251-00009-000 Foot Pedal 1
19 G251-00010-000 Handle Fork 1
20 5304-00018-000 Snap Ring 2
21 G251-00003-000 (2 pc.) G100-00014-000 Return Spring 1
22 5304-00028-000 5305-00024-000 Snap Ring 2
23 G251-00002-000 G100-90009-K02 Saddle 1
24 5110-06010-000 5111-55022-000 Screw, Philips 4
25 G250-00002-000 G100-00016-000 Cover 1
26 G251-40001-000 Knob 1
27 5402-04028-000 Spring Pin 1
28 5105-05012-000 N/A Screw 1
29 G250-70000-000 G100-80000-000 Hyd. Power Unit 1
30 G250-40000-000 G100-90009-K01 Handle Assembly 1
31 G250-90004-K01 G100-90004-K02 Front Wheel Assembly 1
32 G250-90004-K02 G661-70000-000 Caster Assembly 1
33 G250-90009-K03 Bolt Assembly 1
34 G651-31000-000 Pump Assembly 1
*
- ATD7390-L0 ATD7391-L0 Label (s) -
- ATD7390-M0 Manual -
G2501S-074 ( includes 3a,
4 & A to J)
G1001S-97 ( includes 4 &
A to J)
Seal Kit for Hyd. Unit 1
(*) Seal Kit Contents:
Item Description Qty
3a Filler Plug (Atd-7390 only) 1
4 O-ring, D7.1x2.65 1
A O-ring 2
B O-ring 1
C Back-up Washer 1
D U-cup 1
Item Description Qty
E Back-up Washer 1
F O-ring 1
G Packing 1
H O-ring, D15x2.65 2
I Back-up Washer 2
J Packing 1
7
ONE YEAR LIMITED WARRANTY
For a period of one (1) year from date of purchase, Atd Tools Inc. will repair or replace, at its option, without charge,
any of its products which fails due to a defect in material or workmanship, or which fails to conform to any implied
warranty not excluded hereby.
Performance of any obligation under this warranty may be obtained by contacting your point of sale and obtaining return
or repair information from your supplier.
Except where such limitations and exclusions are specifically prohibited by applicable law, (1) the CONSUMER'S
SOLE AND EXCLUSIVE REMEDY SHALL BE THE REPAIR OR REPLACEMENT OF DEFECTIVE PRODUCTS AS
DESCRIBED ABOVE, and (2) Atd Tools Inc. SHALL NOT BE LIABLE FOR ANY CONSEQUENTIAL OR INCIDEN-
TAL DAMAGE OR LOSS WHATSOEVER, and (3) THE DURATION OF ANY AND ALL EXPRESSED AND IMPLIED
WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE, IS LIMITED TO A PERIOD OF ONE (1) YEAR FROM DATE OF PURCHASE.
Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply
to you. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above
limitation or exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have
other rights which vary from state to state.
160 Enterprise Drive,
Wentzville MO 63385
Atd Tools Inc.
636-327-9050
8
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