Purple Line®
Page 4
Ref: CM-UM-0912-Rev.B AUS
Ensure that the motors will not be struck by the wheels as the suspension operates on the caravan as it
is being towed.
It is vitally important that each roller is at exactly the same distance away from the tyre. The whole
assembly must be parallel to the caravan/trailer axle.
Slide the motor units in or out of the cross bar (3) accordingly to ensure the roller will have the maximum possible
contact with the tread of the tyre. Ensure that the position of each motor unit does not obstruct shock absorbers or
any other potential obstacle and that the gear housing (Fig.2F or Fig.4F) has a minimum distance of 10mm to the inner
surface of the tyre when the mover is engaged (Fig.14A or Fig.15A).
Fully tighten the four nylock nuts (17) on both clamping assemblies (Fig.16) to a torque setting of 40 ft lbs/55Nm, then
the four bolts (Fig.1B) on the Main Cross Bar (3) and the four bolts (Fig.1C) on Cross Actuation assembly (4 & 5) to a
torque setting of 9ft lbs/12Nm. Re-check the distance of 20 mm from the rollers to the tyres and if necessary, loosen the
bolts and re-adjust the position of the assembly.
Once satisfied with the position of the assembly, fit and tighten the Chassis Stop Nuts & Bolts (7) , one pair in each of
the Upper Chassis Clamp Plates (see Fig.16). Tighten to a torque setting of 40 ft lbs/55Nm. The Stop Bolts grip the lip
of the chassis and help prevent the mover from sliding along the chassis. The main mechanical components have now
been installed.
Make sure the 12V supply from the battery and any 230V electricity supply are disconnected.
Find a suitable place for the Electronic Control Unit (32), such as a storage area, under a seat or a bed. Make sure this
place is dry and close to the battery (30 cm to 60 cm). The unit can be mounted on the bottom (horizontal) or on the wall
(vertical). When choosing location, ensure that the unit or antenna cannot easily be damaged.
Fix the Electronic Control Unit securely into position with four screws (19). Note: if the provided screws are not of
suitable length or type for the desired location/material please substitute these as appropriate.
Drill a 25 mm hole through the floor of the caravan approximately 150 mm centrally in front of the control unit (32)
terminals.
Caution! Take extra care to avoid any chassis members, gas pipes and electrical wires!
Note: The motor cables are supplied pre-wired into each of the motor assemblies.
Route the motor-cables in accordance with wiring diagram (Fig.20) (red = positive, black = negative).
It is best to try and keep all motor cables an equal length, so it is advised that each pair of cables
is routed towards the centre line of the caravan’s length and then onward to the drilled hole near
the Control Unit
The wiring diagram (Fig.20 + Table.A (see below) depicts the wiring route when installing the motor units in
FRONT of
the wheels/axle towards the ‘A’ frame. Please refer to table B (below) for fitment of the motor units to the
REAR of the
axle.
Note: If you are fitting two sets of motors onto a twin-axle caravan to form a full Quattro® system then both Table A
& Table B wiring will be utilised. Please refer to Fig.21.
Mark the ends of the Motor Cables (12 & 13) for both motor units using the cable markers (25). The cables for the left
and the right motor should have the same length. Avoid any loops.
Route the motor cables along the underside of the caravan floor, inside the supplied Cable Trunking (11) (this will protect
the electrical cables against sharp edges and dirt) through the drilled hole. Also use a combination of the smaller P-clips
(21) where appropriate.
Secure the Cable Trunking (11) to the chassis or under body of the caravan by using the P-Clips (20) and screws (19).
Once the motor cables are through the drilled hole next to the Control Unit (32), cut the cables, ensuring that they are
the same length. Remove approx. 5 mm of the insulation from the ends. Fix the spade connectors (24) by using crimping
Installation - Electrical/Electronic Components
Motor 1 (3) Positive (+) cable to terminal 4
Motor 1 (3) Negative (-) cable to terminal 3
Motor 2 (4) Positive (+) cable to terminal 2
Motor 2 (4) Negative (-) cable to terminal 1
REAR OF AXLE FITTING
Motor 1 Positive (+) cable to terminal 1
Motor 1 Negative (-) cable to terminal 2
Motor 2 Positive (+) cable to terminal 3
Motor 2 Negative (-) cable to terminal 4
FRONT OF AXLE FITTING
Table . B
Table . A
