Jackco 820B, User Manual

LIMITED ONE YEAR WARRANTY

Jackco Transnational Inc. warrants all Jackco equipment and tools to the original purchaser against any manufacturing defect in material or 

workmanship for a period of one (1) year from the original date of purchase. If the defective equipment or tool is determined to be covered under 

this warranty, it shall be repaired or replaced at manufacturer's discretion without charge, provided that the equipment or tool must be returned 

with proof of purchase to the dealer and freight prepaid, if returned to the manufacturer. This warranty shall not apply to damage due to accident, 

negligent use, and lack of maintenance, abuse or applications other than the specific function the equipment or tool is designed for.

No other warranties, expressed or implied, including those of merchantability or fitness for particular purpose shall be applicable to Jackco 

except as specifically stated herein. In no event shall Jackco be liable to any party for any special, direct, indirect, consequential, punitive 

damage of any nature caused by the sale or use of the equipment or tool.

Note: This warranty gives the original purchaser specific legal rights which may very from state to state.

Jackco Transnational Inc. © 201

7 

Azusa

, CA

888-452-2526  www.jackco.com

Problem

Cause

Solution

Erratic Action

1. Air in system

2. Viscosity of oil too high

3. Ram sticking or binding

4. Internal leakage in ram

1. With jack sitting on its base and ram retracted, bleed air

by opening release valve. Pump for 10 seconds.

2. Change to a lower viscosity oil.

3. Look for dirt, gummy deposits, leaks misalignment, worn

parts, or defective packing.

4. Replace worn packings. Look for excessive

contamination or wear.

Ram does not advance

1. Release valve is open

2. Low / no oil in reservoir

3. Air locked system

4. Load is above capacity of

system

5. Pump lost its prime

1. Close release valve located on top of

"T" handle.

2. Fill with oil & bleed system.

3. With jack sitting on its base and ram retracted, bleed air

by opening release valve, running pump for 10 seconds.

4. Use correct equipment.

5. Follow "Pump Prime Instructions".

Ram only extends partially 1. Low oil level in reservoir

2. Piston rod is binding

1. Fill reservoir with oil, & bleed system.

2. Look for dirt, gummy deposits, leaks,

misalignment, worn parts, or defective

packing

Ram advances slowly

1. Low air pressure

2. Pump not working

correctly

3. Leaking seals

1. Adjust air pressure to 90-145 psi.

2. Rework pump.

3. Replace seals.

Ram advances but doesn't

hold pressure

1. Release valve is open

2. Ram seals are leaking

3. Pump c heck valve not

working

4. Overload valve leaking or

not adjusted

1. Close release valve located on top of "T" handle.

2. Replace seals.

3. Clean / replace check valve.

4 . Replace / adjust overload valve.

Jack leaks oil

1. Worn or damaged seals 1. Replace seals.

Ram will not retract, or

retracts slowly

1. Release valve is closed

2. Reservoir too full

3. Ram damaged internally

1. Open release valve.

2. Drain oil to correct level.

3. Take jack to authorized service center for repair.

Trouble Shooting