Owners Manual 5-201-007 Issue 1
5
Page
03
SYSTEM INSTALLATION
WINCH INSTALLATION
Correct instalation of your winch is a requirement for correct
operation.
When foot mounting the winch, the surface must be flat within
0.5mm, (0.020") and sufficiently stiff to prevent flexing. A
minimum of 8mm, (5/16"), thick steel plate should be used.
The thicker the plate, the better the alignment between motor
mount, drum and gearbox housing.
Refer to Hydraulic System Specification.
IMPORTANT:
It is vital to ensure that all hose lengths are
kept to a minimum. Pressure and flowloss is increased as hose
length increases and/or bore size decreases. Pressure and
return lines in excess of 3.5 meters (11.5’) should be
compensated with an increase in nominal bore size.
HYDRAULIC SYSTEM
System Type:
Open system with filtered return line
Relief Valve: IMPORTANT
- Set at winch operating
pressure
Pump:
With a maximum oil supply of 75 l/min at top motor
rpm. The pump must be capable of delivering a pressure of
190 bar.
Reservoir:
Must be fitted with an oil filter device comprising
strainer and air filter and a dip stick. The capacity of the tank
should be at least 75 litres (20 U.S. gal). Note: Do not fill the
tank to the top, since there must be space for expansion in the
tank. Suitable hydraulic oil is Castrol CRML or equivalent
(150 LHM 32 - 68). Typical viscosity rating of 150 - 175 cSt
at 100°c.
Hose diameter should be sizes to ensure that pressure and flow
losses are kept to a minimum. Hoses shall be selected with
appropriate working pressure ratings. The following
connections are provided on your winch.
1. The Valve Block = 3/4” BSPP
2. Pneumatic Freespool = 1/8” BSPP
Pressure and flow loss is increased as hose length increases
and/or bore size decreases. Pressure and return lines in excess
of 3.5 meters should be compensated with an increase in
nominal bore size.
Control Valve4 - way, 3 - position with spring centred, open
centre (ports A & B open when in centre position) and built in
relief valve. The relief valve must be set to the winch
operating pressure. The valve should be mounted as close to
the winch as possible
Load Control Valve: A dual overcentre valve is fitted to the
winch to give smoothly controlled winch out when under load
and to provide full dynamic braking.
Oil Suction Strainer Rating: Approximately 250 microns
Return Line Filter Rating:
10 - 40 microns
INSTALLATION
In all installation work on a hydraulic system, cleanliness and
accuracy are essential so that the hydraulic system functions
properly.
As a general rule:
Bigger Nominal Bore Hose = Better Winch Performance