54TYPE 100/300 Operation and Installation HandbookMountingWhen siting the linear drive unit, the following points should be noted:• The drive unit mounting bracket can be attached to any horizontal orvertical surface. Also, the drive unit can be mounted upside down ifrequired.• The ball end fitting will allow up to 5 degrees misalignment between thepushrod and tiller arm plane of rotation. Accurate angular alignment isextremely important and, therefore, under no circumstances should thislimit be exceeded.• The drive unit must be at right angles to the tiller arm when the rudder isamidships.• The drive is clear of any bilge water.LockwasherTillerarmFixingbolt flangeHole dia.0.52in (13mm)D761-1• The mounting bracket should be bolted to a substantial frame member.Always over-engineer to ensure reliability and maintenance ofcorrect alignment.The pushrod ball end must be attached to the tiller arm, using the adaptorpin (supplied), with its flange positioned between the ball end and the tillerarm. It is vitally important that the lock washer (supplied) is used and thatthe nut is tightened fully.The mounting bracket should be attached with four stainless steel 3/8in.bolts and locknuts/lock washers.Having installed the drive unit, turn the steering wheel from hardover tohardover and check that:• no part of the drive unit fouls the vessels structure.• the mechanical limit stop on the vessels steering system is reachedbefore the actuator reaches its mechanical limit.• angular movement of the ball end fitting is less that 5 degrees.
