MAX Power HYD125 Hydraulic Tunnel Thruster - Manual (Page 5)

MANUAL SUPER POWER Series 125 HYD 01/05/2004
4) THE HYDRAULIC MOTOR AND ITS ADAPTER
Do not separate the motor from its adapter.
Insert the lower metal coupling on the greased leg shaft.
Fit the flexible coupling, then the motor and its adapter, tighten the screws (∅ 10mm) to a
torque of 40 Nm.
IMPORTANT: Using a screwdriver push the lower coupling up towards the motor, the
contact between these parts must be without any slack or play.
Tighten locking screw for drive key (Allen Key of 3 mm with white mark).
5) PROPELLERS
Check the tightness of the oil drain screw (8 mm Allen Key) and the anode (a 10 mm key).
IMPORTANT: To prevent limestone deposits from forming (causing damage to the joints), we
highly recommend applying silicone grease to the shaft and the joints before
assembling the propellers.
Fit the propeller pins and propellers
NOTE: Position the propeller blades opposed and not in line with one another.
Make sure that the propellers turn freely. A certain amount of resistance from the motor is
normal.
Tighten the screws (3 mm Allen key), only 2 mm should be visible above the hub/boss of
the propeller.
WARNING: If more than 2mm is visible, the propeller is not correctly placed, as the screws
are not in the shaft groove.
6) PROTECTION GRILLS
With a shallow tunnel installation, we recommend that you protect the propellers by fitting
horizontal protection grills. These grills will however modify thruster performance.
7) HYDRAULIC (general remarks)
A typical installation of the hydraulic power thruster requires the following elements:
oil reservoir/tank
hydraulic pump
directional control valve
hydraulic motor
circuit piping
oil cooler (depending on type of installation)
The oil reservoir/tank with return filter and suction strainer should be as close to the pump as
possible and on charge. Meaning that the level of the oil should be above the pump,
preferably with the oil tank above the water line.
For future maintenance, make sure that the return filter is easily accessible. An isolation valve
can be fitted to the suction.
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