June-22
Product Code: 2057T
Made in China to TQB Brands Pty Ltd specifications
Visit us at www.tqbbrands.com.au
Page 8
Problem
Symptom
Cause
Conclusion
Solution
Jack will not lift
using manual
pump
Manual pump has no
resistance, lift arm will
not raise
Release handle valve
pin obstructed
Load weight exceeds
lift capacity &
overload actuated
Valve seat/check ball
failure
Higher capacity jack
required
Relief valve needs reset
Re-adjust release handle
position
Select higher capacity Jack
Contact qualified
technician for repairs
Manual pump has
resistance, lift ram
raises and falls with up
and down pump strokes
Main check ball fails to
seal
Obstruction in main
check valve
Bleed pump and ram as
per owners manual
instructions
Jack will not
hold load
Load cannot be
sustained, lift ram drops
under load
Release valve closed
but failure to raise lift
arm
Valve check ball off
centre not contacting
valve seat correctly
Contact qualified
technician for repairs
Damaged main seal
external leak at lift ram
Replace main ram seals
Contact qualified
technician for repairs
Pump handle rises
Main check valve
obstructed
Replace main check
valve ball and reseat
valve seat
Contact qualified
technician for repairs
Poor lift
performance
Pump has no resistance,
lift ram will not raise to
full stroke
Low oil level
Air trapped in system
due to cavitation
caused by air pressure
build up in reservoir
Fill fluid to correct level
Lift ram raised for
extended period causing
air ingress to hydraulic
system
Fill fluid to correct level
then bleed system
With ram fully retracted,
open the breather to let
pressurised air escape
then bleed system
Contact qualified
technician for repairs
TROUBLESHOOTING
