Installation and operating instructions for
Rail Clamp DR 085/088 FHM
spring activated
– hydraulically released
E 09.797e
Issue: 14.09.2022
Version: 2
Drawn: BAHS
Checked: OHLM
Pages: 39
Page: 20
2.5 Hydraulic circuit bleed
Tools: Spanner, 6mm ID flexible hose.
Important!
Take the necessary precautions to avoid the oil being sprayed onto the
drail. If the pads are contaminated with oil, they must be cleaned or
replaced.
To ensure that the rail clamp DR 085/088 FHM operates properly, the cylinder must be bled.
On the bleed screw 11271-17, install a hose-
6 mm whose end is immersed into a container.
1. Pressurize the rail clamp.
2. Hold the hose in place, slightly loosen the bleed screw until there is a release of oil and air.
3. Wait until there are no more air bubbles in the oil during the release.
4. Tighten the bleed screw without forcing.
5. Check the oil level in the hydraulic unit.
6. Check that the bleed screw is leak-tight.
Fig. 2.17
Important!
The oil and hose must be clean
(maximum permitted level of pollution as per NAS 1638: 10µm).
Use only new fluid and never mix several types of different-brands of
fluid.
