Model: 02-7839-0111
18 Ton Single Stage Jack
09/2001 – Rev. 01
- 2 -
4.0 ASSEMBLY INSTRUCTIONS
4.3 PRE-USE CHECKS
1. Refer to the Illustrated Parts List to identify and ensure that all parts are present.
2. Generally check over unit to assure the tightness of all nuts, bolts and fittings.
3. With rams completely collapsed, check hydraulic fluid level; three-quarter inch (3/4") below
vent. Replenish with MIL-H-5606 fluid as required.
5.0 OPERATING INSTRUCTIONS
The user should be familiar with the following statements prior to using the jack.
CAUTION
1. NEVER put hands between aircraft and jack pad, as after aircraft has been
lowered, struts may have hung up.
2. NEVER align jack under aircraft by pounding on jack legs. Dented legs may
lead to jack collapse.
3. ALWAYS lower ram locking nut(s) after jack is under load. Be sure ram nut(s)
is seated fully after jacking.
4. ALWAYS raise and lower jacks simultaneously, so that aircraft remains level.
5. ALWAYS use a tail or nose stand, as applicable, for additional stability.
5.1 JACK INSTRUCTIONS
To Raise Aircraft:
1. Place jack on a hard level surface.
2. Raise mechanical extension as close to aircraft jack pad as possible.
3. Close pump release valve and operate pump.
4. Lower ram locknuts as aircraft is raised.
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 the jack during a washing or cleaning operation, the jack should be completely
covered to protect it from cleaning solution, dirt and/or foreign material which might get on or
between the ram and cylinder causing damage to the seals and O-rings.
