Hose Types; Hydraulic Drive Unit - Lewmar OCEAN Series Owners Installation, Operation & Servicing Manual

5- Hydraulic System
5.1 Installation
NOTE: Hydraulic system installation is NOT covered in
this publication.
Lewmar hydraulic winches have been designed for
ease of installation and follow a straight forward
hydraulic and mechanical installation procedure.
Fig 5.1-1 shows typical hydraulic circuit for a winch
with the Lewmar Commander Power System or
equivalent.
The purpose of this manual is to provide the reader
with sufficient information to install and operate a
hydraulic winch. It assumes the reader will be familiar
with sailing craft, marine hydraulics, mechanical
installation and safety requirements. If in any doubt
consult a qualified marine engineer.
⚠ WARNING!
The installation of hydraulic systems requires a high
level of cleanliness. The ingress of dirt will danger-
ously impair the safe operation of the system and
cause premature wear of hydraulic components.

5.2 Hose types

NOTE: Hoses and connectors are not supplied.
For reliable operation and safety it is essential to use reinforced braid hose for connecting to the motor A and B
ports which conforms to SAE100R7 or ISO D1S3949 safety requirements.
The recommended hose sizes are:
• Up to 15m (50ft) 12mm (1/2")
• Over 15m (50ft) 16mm (5/8")
• Safe working pressure : see performance graphs section 6.
• Minimum recommended bend radius 150mm (6")

5.3 Hydraulic drive unit

NOTE: Refer to your installed hydraulic system
manual for hydraulic drives.
This table refers to Lewmar Commander system port
connections only.
The Lewmar hydraulic motor ports are: A & B ports
1/2" BSP.
Lewmar OCEAN & EVO® Electric/Hydraulic Winches ref B2303 Iss.14 | 15
EVO
OCEAN
®
46 45
48 50
50 -
54 55
58 -
65 65
68 70
77 80
88 90
111 -
Fig 5.1-1
Motor
Port A Port B
Speeds
1 A
1 A
1 A
1 A
1 A
1 A
2-3 A
2-3 A
2-3 A
2-3 A
B
B
B
B
B
B
B
B
B
B