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Maintenance
Keep the hydraulic rams clean and free of any
dust, dirt, or foreign debris. Abrasive material
stuck to the ram can damage the hydraulic seal
when the ram is retracted back into the jack.
Regularly wipe the hydraulic rams clean with a
lightly oiled rag.
The Model H8098 will require hydraulic fluid after
long-term use. This will be noticeable if the jack
will not reach its maximum height when pumped.
Only use a high quality hydraulic fluid.
To add hydraulic fluid:
1. Completely lower the jack.
2. Remove the fill plug shown in Figure 2.
Figure 2. Fill plug.
Bleeding the Air
If the jack becomes spongy or will not rise when
pumped, then air bubbles may be in the hydraulic
system.
To remove the air bubbles:
1. Remove the fill plug.
2. Rotate the pump handle counterclockwise
one full turn.
3. Pump the handle quickly ten times to purge
the air from the system.
4. Replace the fill plug and test the operation of
the jack.
—If the jack did not perform properly, then air
may need to be bled from the pump system
again.
3. Add fluid until it reaches the top of the fill plug
hole.
4. Replace the fill plug.
5. Test the operation of the jack by pumping
it up to the maximum height and applying a
load. The jack should hold the weight of the
load without a sinking or spongy feeling.
—If the jack did not perform properly, then
air may need to be bled from the pump
system.
Fill Plug