REHOBOT Hydraulics AB
Skjulstagatan 11 A, 632 29 Eskilstuna, SWEDEN P.O. Box 1107 631 80 Eskilstuna
T. +46 (0)16 - 16 82 00 F. +46 (0)16 - 13 93 16 [email protected] www.rehobot.se
Assembly of lifting plate (Fig. 6)
The lifting plate is fitted on the base unit with four screws.
Connecting compressed air (Fig. 7)
Connect compressed air to the valve housing (A) with a G ¼”
connection.
Operation (Fig. 8)
1 The jack should be positioned under the lifting object
as close to its centre of gravity (balance point) as
possible.
2 Connect the compressed air supply. To ensure reliable opera-
tion and long life, use clean compressed air with a water trap
and mist lubrication. Begin the pneumatic
stage by pressing the foot pedal marked “UP“ (A).
Raise the pneumatically operated piston to its top
position. The piston is automatically locked in the upper
position. Once the piston is locked in the upper position
the compressed air supply can be disconnected.
Make sure the piston is locked in the upper posi-
tion before proceeding.
3
Close the hydraulic system release valve (B) (turn
clockwise). Pump up the hydraulic piston with the
handle (C) until the lifting plate is in the correct position
beneath the lifting object.
4
Adjust the lifting plate and adapters (if used) to
provide the best possible contact with the lifting
object.
5
Carefully pump up the lifting plate so that it touches
the lifting object.
6
Make precision adjustments of the lifting plate and
adapters so that they are in contact with the lifting
object.
7
Secure the lifting object with a safety strap or chain to
the lifting plate, tighten as securely as possible and
lock in position.
8
Once all the connections to the object has been
disconnected, lower the hydraulic piston slowly by
opening the release valve (B) (turn counter
clockwise). Then lower the pneumatic piston by
pressing the foot pedal marked “DOWN” (D)
If the pneumatic piston does not drop when the pedal is press-
sed this is because the load is resting on the mechanical lock
for the pneumatic piston. In order to lower the load it must first
be raised to release the mechanical lock. This can be done by
pressing the pedal marked “UP“.
If the balance point of the objet is unknown the lift
should be carried out at the lowest possible height i.e.
lower the car lift so that the lift can be done with the
pneumatic piston in down position. The lift shall be
made with great caution since there is a risk for the
jack to tip over.
If a load is placed on the lifting plate when the pneu-
matic piston is unlocked and in the raised position it
will force the piston down. This may result in injury to
the operator.
Before moving the transmission the jack must always
be lowered to the bottom position (both pneumatic
piston and hydraulic piston).
Never move the jack by pulling on the hydraulic pump
handle.
Never work under a raised load without first sup-
porting it on axle stands or some form of mechanical
support.
Maintenance
Regularly lubricate all joints and bearing points using light
machine oil.
Service
Bleeding the hydraulic system
•
Tilt the jack so that it stands on two wheels with the
pump lever pointing downwards as shown in Fig. 9.
•
Open the release valve (anticlockwise) and pump the
lever until you feel resistance.
•
Close the release valve (clockwise) and continue to
pump while the jack is tilted back into the upright
position.
Filling with oil
•
Remove the lifting plate by unscrewing the four
securing bolts (Fig. 6).
•
Remove the release knob (Fig. 10, A) and the ball
underneath.
•
Remove the oil filler plug (Fig. 10, B).
•
Fill with oil until the reservoir is full (overflowing).
NOTE: it is essential that you use hydraulic oil of the
right quality.
•
Refit the ball and release knob (Fig. 10, A).
•
Refit the oil filler plug (Fig. 10, B).
•
Refit the lifting plate using the four securing bolts (Fig.
6).
