Tri Tool 757RSS Hydraulic Power Supply User Manual
Page 11
11
Model 757RSS, Hydraulic Power Supply
92-0565 : Rev. 070912
Alternate fluids are listed in the section ‘Recommended Hydraulic fluids’ later in this
booklet.
If long lengths of new hydraulic hoses (which are not full of fluid) are connected,
then additional fluid will have to be added after the lines have been filled.
An additional 1.6 gallons (6 lt.) of fluid is required when 100’ (50' [12.7 m] hose set)
of 5/8” (16 mm) diameter hose is connected to the power supply.
Drain and refill after every 2000 hours.
Drain and refill more frequently if the oil becomes contaminated.
A visual observation through the sight glass level indicator is required.
HYDRAULIC HOSES
Visually inspect Hydraulic Hoses and replace if damaged.
For detailed testing, a test rig consisting of a male quick disconnect, a 10 gpm
(38 lt./min) minimum capacity flow meter, a 2000 psi (140.6 kgs/sq. cm) pressure
gauge, a shut-off valve (rated at 2000 psi, (140.6 kgs/sq. cm) and a female quick
disconnect may be coupled between the hoses.
Open the shut-off valve to full volume flow at low pressure, which will be obtained
with “full” actuation of the control knob.
By closing down the shut-off valve of the test rig, reduced flow at a higher pressure
is obtained and full bypass pressure is obtained and indicated at zero flow.