Tronair 02-0544C0110, Operation & Service Manual, Page: 8 / 78

Models: 02-0544C0110 & 02A0544C0110
5 Ton (4.5 Metric Ton) - Single Stage Jack
04/2014 | Rev. 01 Page | 5
4.4.2
Jack Instructions (continued)
RAM PROTECTION RING
RESULTS OF LOCKING PIN IN INCORRECT LOCATION
3. Close pump release valve by turning clockwise.
NOTE: Turning the pump release valve counter-clockwise lowers the jack. Turning the pump release valve clockwise
stops the
jack’s descent, and allows it to be raised.
4. Operate the pump using the handle, or by holding the lever on the air valve (if equipped with an air pump).
5. Lower ram locknuts as aircraft is raised.
WARNING!

The ram locknuts are user operated safety devices. Failure to utilize these locknuts may result in
personal injury or death.

Do not place hands on top of jack near ram locknuts while lowering jack. Pinch points exist between
top of jack and threads on ram.

Always wear safety glasses.

Stop operating hand pump or air pump when ram has reached its maximum hydraulic extension.
To Lower Aircraft:
1. Lower all jacks simultaneously.
2. If ram locking nut(s) is tight, raise jack slightly to release nut(s).
3. Loosen pump release valve slightly to slowly lower aircraft. Raise locking nut(s) as jack ram(s) lower.
NOTE: When using jack during washing operations, completely cover top of jack near ram seal.
Unacceptable Condition Acceptable Condition
Damage
and
Deformation
No
Deformation