Advertisement
05/20
TROUBLESHOOT
Problem
Symptom
Jack will not
Manual pump has
lift using
no resistance, lift
manual
ram will not raise
pump
Jack Will Not
Air Pump operating
Lift using Air
but lift ram will not
pump
raise
Jack will not
Load cannot be
hold load
sustained, lift ram
drops under load
Pump handle rises
Jack will not
Ram rises after
lower after
retracting
unloading
Release valve pin
seized
Cause
Release valve not
tightly closed
Air in hydraulic system
Load weight exceeds
lift capacity
Overload actuated
Release valve not
tightly closed
Air in hydraulic system
Load weight exceeds
lift capacity
Overload actuated
Air Motor effected by
water in air supply.
Air exhausting but
motor not pumping.
Release valve not
tightly closed
Damaged main seal
Main check valve
obstructed
Reservoir overfilled
Linkages binding
Made in China to TQB Brands Pty Ltd specifications
Visit us at www.tqbbrands.com.au
Conclusion
Bypass through release
valve
Air cavitation in pump
and/or lift ram
Higher capacity jack
required
Relief valve needs reset
Bypass through release
valve
Air cavitation in pump
and/or lift ram
Higher capacity jack
required
Relief valve needs reset
Lubrication flushed out of
air motor, requires added
lubrication.
Adding lubrication to air
motor fails to remedy
issue.
Bypass through release
valve
Replace main ram seals
Replace main check valve
ball and reseat valve seat
Pump failure due to
cavitation caused by
excess reservoir level
Dry release valve pin
BTSJ20TB
Solution
Ensure release valve
tightly closed
Bleed system
Select higher
capacity jack
Contact qualified
technician for repairs
Ensure release valve
tightly closed
Bleed system
Select higher
capacity jack
Contact qualified
technician for repairs
Install air /water
separator to air
supply.
Follow Lubrication
instructions.
Ensure release valve
tightly closed
Contact qualified
technician for repairs
Drain fluid to proper
level
Lubricate release
valve with 32grade
hydraulic oil
P a g e
| 9
Advertisement
