Tronair 02-7813C0100, Operation & Service Manual

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Models: 02-7813C0100, 02-7813C0100-A5, 02-7884C0400
12 Ton Two Stage Hydraulic Axle Jack
02/2021 | Rev. 06 Page | 2
4.0 TRAINING
4.1 TRAINING REQUIREMENTS
The employer of the operator is responsible for providing a training program sufficient for the safe operation of the unit.
4.2
TRAINING PROGRAM
The employer provided operator training program should cover safety procedures concerning use of the unit in and around the
intended aircraft at the intended aircraft servicing location.
4.3
OPERATOR TRAINING
The operator training should provide the required training for safe operation of the unit.
NOTE: Maintenance and Trouble Shooting are to be performed by a skilled and trained technician.
5.0 OPERATING INSTRUCTIONS
The user should be familiar with the following statements prior to using the jack(s).
CAUTION!
•
Never put hands between aircraft and jack pad.
•
Always open reservoir vent screw before operating.
5.1 JACK INSTRUCTIONS
To Raise Aircraft:
1. Place jack on a hard level surface.
2. Raise jack as close to aircraft jack pad as possible, with appropriate base spacer blocks. Screw out the center mechanical
extension for final adjustment.
3. Open reservoir vent screw.
4. Close pump release valve and operate pump.
To Lower Aircraft:
1. Loosen pump release valve slightly to slowly lower aircraft.
6.0 TROUBLE SHOOTING
TROUBLE PROBABLE CAUSE ACTION
Fluid leakage at pump
piston or pump body Damaged backup ring, o-ring, piston or
pump body
Remove piston and pump body. Inspect for
damage. Replace defective part(s). Replace
removed o-ring and backup ring
External fluid leakage at
ram(s) Damaged o-ring, backup ring or inner
cylinder wall Remove ram(s) as a unit from cylinder. Inspect
parts. Replace o-ring and defective part(s)
Jack fails to lift rated load
Release valve not closed properly Fully tighten release valve
Low fluid level Fill to correct fluid level
Pressure relief valve improperly adjusted Adjust or replace release valve
Leakage at inlet or outlet check ball
Inspect valve body for wear or replace valve
body and check balls
Vent screw closed Open vent screw
Ram(s) will not support load
after manual or pneumatic
pump up
Leaking ram o-ring seals
Check for external leakage, if present replace
defective seal and back up ring
Leaking pressure check valve
Inspect valve body for wear or replace valve
body and check balls
Leaking pressure relief valve
Remove release valve, inspect ball and ball
seat in pump block. Replace defective part(s)
Ram(s) raise and fall with
each manual pump stroke
Release valve open Fully tighten release valve
Inlet check valve not seated or sticking Pump rapidly to dislodge or replace valve body
Pressure check valve not seated or sticking Pump rapidly to dislodge or replace valve body
Jack fails to lower
Ram locknut not loosened Raise jack ¼ inch and release locknut
Vent screw closed Open vent screw
O-Ring (pinched or rolled)
Replace o-ring and back-up ring, clean up
cylinder wall of debris