Hydraulic System - Lewmar C10 Capstan Owners Installation, Operation & Servicing Manual

5- Hydraulic system

5.1 Installation
Capstan unit should be connected to a hydraulic powerpack with directional control valve installed
to control the capstan movement.
A typical hydraulic circuit is shown below
5.2 C10/12 Hydraulic motor/gearbox
The hydraulic motor/gearbox consists of a high torque hydraulic motor fitted to an in line gearbox
with brake.
Refer to section 5.3 for flows and pressures information.
The motor gearbox is self sustaining.
5.3 Pressures and Flow rates
MODEL
C10 (200 cc/rev)
C12 (250 cc/rev) 13.5:1 G/Box
5.4 Hose types
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
SAE100R2A or DIN 20 021 Part 2.
The recommended hose sizes are:
• Up to 30 l/min + /
1
2
• Up to 50 l/min + /
5
8
• Up to 70 l/min + / " (19mm) bore diameter.
3
4
• Up to 130 l/min + 1" (24mm) bore diameter.
Ref: 3.78 litres = 1 US gallon
4.54 litres = 1 Imperial gallon
5.5 Recommended Oil
Lewmar recommends Mineral based non-foaming,
anti-wear, water tolerant 32 centistokes at 40°C to
ISO32
5.6 Motor ports & drain
The Lewmar hydraulic motor ports are:
A & B ports ½" BSP.
Drain port is ¼"BSP.
Note:
• A drain line is required
• The minimum bore diameter of the drain line
required is 10mm (
3
• Safe working pressure: 10 bar.
• Tubing material: Oil compatible semi-rigid
plastic tube braided hose or steel pipe.
NORMAL PRESSURE
bar
175 2573
155 2279
" (13mm) bore diameter.
" (16mm) bore diameter.
/ ").
8
FLOW RATE
l/min
psi
20–55
30–80
Hydraulic installation schematic
Lewmar C10/12 Capstan Manual ref B10407 iss.1
US gal/min
5.2–14.3
7.8–20.8
GB
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