Page 523 - Lewis

522 Uflex Hydraulics

Manual Inboard Steering Systems
HOW THE SYSTEM WORKS: Under normal operating conditions, a turn of the steering wheel will send the oil from the
helm unit into one of the two connecting hydraulic lines.
The oil will be pumped into one of the chambers of the cylinder and either extend or retract the cylinder rod, depending on
the steering wheel rotation.
The fluid going out from the other chamber of the cylinder is returned to the helm via the other hydraulic line.
The helm unit consists of both a hydraulic pump and a valve assembly (UP28FM, UP33FM, UP39FM).
The valve assembly prevents outgoing fluid from returning along the same line, isolates each steering station, locks the
rudder and eliminates rudder "feedback" to the helm. The cylinders are double acting and may be balanced unbalanced,
(in which case the rod extends through only one end of the cylinder).
FIG 2300
Full Page
SINGLE STEERING STATION DOUBLE STEERING STATION

Inboard Series Cylinders
CYLINDERS MAX BOAT HULL TYPE No. Of MAX TORQUE HOW TO
LENGTH ENGINES ORDER
NOTE: UC116-I 8.50 m - 28 ft. Planning/ 1 Up to 58 kgm System 1
Pre-made hoses recom- 9.50 m - 31 ft. Displacement 2 5043 lbs. in System 1
mended for dual cylinder,
dual station or hose runs
longer than 50 feet. UC168-I 11.60 m - 38 ft. Planning 1 Up to 87 kgm System 2 or 3
7565 lbs. in
System 3
For systems 1, 2, 3, 4, and 13.40 m - 44 ft. Displacement 2 Up to 87 kgm System 2 or 3
5 copper tubing (3/8" dia.
UFLEX HYDRAULICS these applications a fitting UC215-I 11.60 m - 38 ft. Displacement 2 Up to 111 kgm System 4 or 5
or 10 mm dia.) can be used
1
9.70 m - 32 ft.
as an alternative tubing for
plumbing the system. For
System 3
7565 lbs. in
kit, KIT95 or KIT100, is
Planning
1
13.40 m - 44 ft.
required (special order
only).
15.20 m - 50 ft.
2
System 5
9652 lbs. in
For applications on work
2
System 4 or 5
Up to 111 kgm
11.60 m - 38 ft.
boats, the use of copper
tubing is recommended.
9652 lbs. in
13.40 m - 44 ft.
16.00 m - 58 ft.
UC293-I
System 6
1
18.30 m - 60 ft. Planning 2 Up to 147 kgm System 5
2
12816 lbs. in
14.00 m - 46 ft. Displacement 2 Up to 147 kgm System 6
18.30 m - 60 ft. 2 12816 lbs. in
UC378-I 18.90 m - 62 ft. Planning 1 Up to 187.6 kgm System 7
19.80 m - 65 ft. 2 16347 lbs. in
18.90 m - 62 ft. Displacement 1 Up to 187.6 kgm System 7
19.80 m - 65 ft. 2 16347 lbs. in