Section 4: PREPARATION FOR OPERATION Page 22
OM-ZR-May15
Adjusting Position of Caisson Clamps with HydroLocks
Bleeding Hoses
When the equipment is shipped with all hoses attached, the hoses are usually full of oil and may be used
immediately.
If the clamp hoses are connected at the job site or if air is present in these hoses, they must be bled prior to
operation.
Always use a board or cardboard when bleeding hoses. Escaping oil under pressure, even
a pinhole size leak, can penetrate body tissue causing serious injury or possible death.
1. Read Section 5: OPERATION. Also, see Caterpillar Operation & Maintenance Manual. Start and warm up
the diesel engine in accordance with Section 5: OPERATION.
2. With the engine warmed up and running at 1000 RPM, loosen the close clamp line at the clamp or remove
the setscrew in the end of the hydraulic cylinder. Turn the clamp switch on the remote-control pendant to
CLOSE. Wait until oil flows from the connection at the clamp. When oil flows without air, tighten the con-
nection. Use a catch basin for escaping oil and discard in an approved manner.
3. After the line has been bled, alternately turn the clamp switch to CLOSE and OPEN to insure that the clamp
is working properly. It may be necessary to bleed the line more than once. The open-clamp line may also
require bleeding.
4. Use the above method to bleed ZR function or eccentric moment actuator lines.
!WARNING – Safety!
1. Lift vibrator with clamps into the air.
2. With jaws open, loosen jam nut on HydroLock holding valve (see diagram below).
3. Back out Allen-screw to relieve pressure. It may be necessary to rest the weight of the vibrator on the
clamps to release the HydroLock cylinders.
4. Adjust position of clamps on caisson beam.
5. Hand tighten Allen-screw. Tighten jam nut.
6. Close clamp jaws. Wait for CLOSED light to come on.
7. Open jaws. Clamps will be locked onto caisson beam.
