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For technical questions, please call 1-888-866-5797.

Item 64908 

        

Inspection, Maintenance, & Cleaning

  Procedures not specifically explained in this manual must be performed only by a qualified technician.

TO PREVENT SERIOUS INJURY FROM TOOL FAILURE: 

Do not use damaged equipment.  If abnormal noise or vibration occurs, have the problem corrected before further use.

1.  Before each use, inspect the general condition of the 

Jack.  Check for broken, cracked, or bent parts, loose 
or missing parts, and any condition that may affect the 
proper operation of the product.  If a problem occurs, 
have the problem corrected before further use. 
Do not use damaged equipment.

2.  Before each use, thoroughly test the Jack for 

proper operation prior to its actual use.  If the Jack 
appears not to be working properly, follow Bleeding 
instructions in ”Bleeding” on page 4.

3.  Change hydraulic oil at least once every three years:

a.  With the Jack fully lowered, remove the Oil 

Fill Screw on the side of the Hydraulic Unit.

b.  Tip the Jack to allow the old hydraulic oil 

to drain out of the Housing completely, 
and dispose of the old hydraulic oil in 
accordance with local regulations.

c.  With the Jack upright, completely fill the Housing 

with a high quality hydraulic oil (not included) until 
the oil just begins to run out of the oil fill hole.

d.  Open the Release Screw and pump the 

Handle to bleed air from the system.

e.  Recheck oil level and re-fill as needed. 
f.  Reinstall the Oil Filler Plug.

4.  Wipe dry with a clean cloth. Then, store the 

Jack in a safe, dry location out of reach of 
children and other non-authorized people.

Troubleshooting

To Prevent Serious Injury:

Use caution when troubleshooting a malfunctioning jack.  Stay well clear of the supported load. 
Completely resolve all problems before use.  If the solutions presented in the Troubleshooting guide 
do not solve the problem, have a qualified technician inspect and repair the jack before use.

After the jack is repaired:  Test it carefully without a load by raising and lowering it fully, 
checking for proper operation, BEFORE RETURNING THE 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

Saddle 

lowers 

under load

Pump 

stroke 

feels 

spongy

Saddle 
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 fully closed. 
Bleed air from the system. 

X

X

X

Valves may be blocked and may not 
close fully.  To flush the valves:
1.  Lower the Saddle and securely 

close the Release Valve.

2.  Manually lift the saddle several inches.
3.  Open the release valve and force the 

saddle down as quickly as possible.

X

X

X

Jack may be low on oil.  
Check the oil level and refill if needed.
Jack may require bleeding - 
see instructions on page 4.

X

Unit may have too much 
hydraulic oil inside, check fluid 
level and adjust if needed.

Summary of Contents for 64908

Page 1: ...ence 18k 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 2018 by Harbor Freight Tools All...

Page 2: ...le with appropriate means 5 Do not move or dolly the vehicle while on the jack 6 Failure to heed these markings may result in personal injury and or property damage 7 Lift only areas of the vehicle as...

Page 3: ...Item 64908 Specifications Weight Capacity 2 Tons 4 000 lb Maximum Height 12 3 4 Minimum Height 5 3 8 Jack Components Saddle Lifting Arm Handle Socket Handle Oil Fill Screw Not Shown Release Valve Figu...

Page 4: ...le into the Release Valve 3 Turn the Handle counterclockwise to open valve 4 Insert the Handle into the Handle Socket Pump the Handle up and down quickly for several times to purge the air from the sy...

Page 5: ...the individual capacities combined unless specifically noted on the product by the jack stand manufacturer Do not exceed rated jack stand capacity Ensure that the vehicle support points are fully seat...

Page 6: ...e Recheck oil level and re fill as needed f Reinstall the Oil Filler Plug 4 Wipe dry with a clean cloth Then store the Jack in a safe dry location out of reach of children and other non authorized peo...

Page 7: ...n for handle socket 1 38 Snap ring 1 2x20mm 1 39 Seal kit 1 Parts List and Diagram Record Product s Serial Number Here Note If product has no serial number record month and year of purchase instead No...

Page 8: ...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 EX...

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