7
ADC-02
ADDING OIL TO THE HYDRAULIC SYSTEM
With prolonged use, small amounts of oil may leak out of the hy‑
draulic system and need to be replenished. Check the oil level if:
• The hydraulics begin to feel sluggish or jerky and purging air
out of the system (page 5) does not resolve the issue.
• The seat or backrest do not reach their maximum height
when being raised.
1.
Press down and hold the selector lever in the BACKREST
LOWER position (Fig. 9
A
) while simultaneously pushing down
on the backrest (Fig. 9
B
) until it is fully reclined.
Fig. 9
Fig. 9
A
B
2.
Disconnect the backrest latch from the backrest cylinder and
fold the backrest forward, over the seat.
3.
Using a 1/4’’ Allen wrench, remove the oil FILL plug (Fig. 10
A
)
from the pump cylinder.
Do not remove the other two plugs on the pump—doing so
will introduce air into the hydraulic lines.
Fig. 10
Fig. 10
A
4.
Press down and hold the selector lever in the SEAT LOWER
position until the seat is fully lowered. This will cause the
hydraulic oil to rise to its maximum level inside the reservoir.
5.
Using a small mirror and a flashlight, look down into the oil fill
port and observe the oil level. The oil (yellow‑green) should
come up to the bottom of the threads (Fig. 11
A
). If not, top off
with a premium quality, medium‑grade hydraulic oil (ISO VG
46, SAE 15), such as Mobil DTE 25.
Fig. 11
Fig. 11
A
7.
Reinstall the oil fill plug while the chair is still collapsed.
Whenever hydraulic oil has been added to the system, the
system should be purged of any air that might have infiltrated
the system (see
Purging Air From from the Hydraulic System
,
page 5). Confirm that the hydraulics work properly before
resuming patient procedures.
