Installation Of The Ql Boat Trim System - Volvo Penta QL Boat trim system User & Installation Instructions Manual

Installation of the QL Boat Trim System

Note! Before starting the installation of your QL Boat
Trim System, read carefully the next coming pages!
Especially notice the "Note!" and "Important!" remarks.
The interceptor units (C) fig. 1 and 4 shall be installed on
the transom close to the boat bottom. The exact
positioning is set by the template, included in the
delivery (for detailed instructions, see below). The further
outboard the interceptor units are mounted, the greater
the lateral (side-to-side) control. Position the interceptor
min. 50 mm /2" from the chine and run towards the
centerline of the boat. Boats with Outboard Motors,
Inboard/Outboard (I/Os) or Water Jet installation, must
maintain a minimum of 200 mm /8" from the centerline of
the actual drive unit to the closest edge of the interceptor
Fig. 7
units. See fig. 7.
Boats with inboard motors may utilize the entire run of
the transom, still leaving min. 50 mm /2" from the chine. If
the boat has strakes reaching the transom, the
interceptor units shall preferrably be installed next to
Fig. 8
these strakes. See fig. 8.
Note! If the transom is curved or ragged, shims must be
made of a suitable material, and fixed to the transom, in
order to provide a straight, flat and smooth mounting
surface for the interceptors. See fig. 9.
Min. 100 mm Min. 100 mm Min. 100 mm Min. 100 mm Min. 100 mm
(3.9") (3.9") (3.9")
(3.9") (3.9")
Fig. 9
Preferred location Preferred location
Preferred location Preferred location Preferred location
relative to strakes! relative to strakes! relative to strakes! relative to strakes! relative to strakes!
OK location OK location OK location
OK location OK location
relative to strakes! relative to strakes! relative to strakes! relative to strakes! relative to strakes!
300/450 mm (12"/18") 300/450 mm (12"/18") 300/450 mm (12"/18") 300/450 mm (12"/18") 300/450 mm (12"/18")
Flat mounting surface Flat mounting surface Flat mounting surface
Flat mounting surface Flat mounting surface
The template , see fig 10, is equipped with pilot holes for
marking on the transom. Place the template on the
transom considering the guidelines as specified above.
Fig. 10
If two pairs of Interceptors are installed, i.e. two units on
each side of the transom, leave approx 3mm/1/8"
between the two templates. See fig 11.
Fig. 11
Before the installation is continued, always check there
are no obstacles on the inside of transom (bulkheads,
tanks, fuel lines etc.) that can interfere with or be
damaged by the interceptor installation. See fig 12.
Warning! Be sure the bilge is completely
ventilated and free of gas fumes. Drilling into a
hull contaminated with gas fumes may cause a
violent explosion.
Fig. 12