Instruction Manual
DRJ-10 Rail Jack - V1.2
www.durapac.com
Page 6 of 10
recommend Durapac Hydraulic Oil or equivalent
Equipment must only be serviced by a qualified hydraulic technician. For repair service,
contact your local Durapac authorised service centre
The greatest single cause of failure in hydraulic systems is dirt; keep the jack clean and well
lubricated to prevent foreign matter from entering the system. If the jack has been exposed
to rain, snow, sand or grit, it must be cleaned before and after each use.
Maintenance is required when wear or leakage is noticed. Periodically inspect all
components to detect any problem that may require service and maintenance.
6.1
Adding Hydraulic Fluid
WARNING
: Always add oil with cylinder fully retracted or the system will contain more
oil than the reservoir can hold
6.1.1
Open release valve.
6.1.2
Press down on head to ensure piston is fully down.
6.1.3
Remove the oil filler plug.
6.1.4
Use a small funnel to fill the reservoir to a level 3 mm below the bottom of the
filler hole.
6.1.5
Bleed air from system if necessary.
6.1.6
Close the release valve.
6.1.7
Wipe up any spilled fluid and reinstall the oil filler plug.
6.2
Bleeding Air from the System
6.2.1
Repeat Steps 6.1.1 to 6.1.3 (above).
6.2.2
Remove the saddle (#12 – Parts Breakdown).
6.2.3
Loosen but do not remove the bolt (#10) located at the top of the piston rod
(#2)
6.2.4
Use a press to prevent the cylinder extending while removing air.
DANGER:
The press must be able to withstand the full ten ton force of the jack
6.2.5
Add hydraulic fluid (Step 6.1.4), if required.
6.2.6
Pump the handle until oil and air bubbles escape from the threaded area of
the bolt. Wipe and continue pumping until air is removed (air bubbles are no
longer seen).
6.2.7
Tighten the bolt (#10) and replace the saddle (#12).
6.2.8
Recheck that cylinder is fully retracted.
6.2.9
Add hydraulic fluid (Step 6.1.4), if required.
6.2.10
Close the relief valve.
6.2.11
Wipe up any spilled fluid and reinstall the oil filler plug.
