COMEUP Industrial Winch (Ver:03) - Manual (Page 17)

X . Trouble Shooting
16
For Hydraulic Winch (Yak Winch, HV Winch and Bison Winch)
In most cases, the cause of malfunction is found in the hydraulic system. Before the winch
is removed from its mounting and disassembled, all of hydraulic system components should be
check for proper function. When checking oil pressure and volume in the hydraulic system, make
certain that the hydraulic reservoir is filled to the top level.
1. Hydraulic Oil Volume
The hydraulic oil volume relates to the line speed or rpm of the winch. Therefore if the winch
does not produce the specified maximum line speed or drum rpm, a loss of hydraulic flow in the
hydraulic system can be analysed. In this condition exists, install a flow meter into the hydraulic
system to check the volume supplied to the pressure port of the hydraulic winch motor when the
winch control is completely opened.
2. Hydraulic Pressure
The hydraulic pressure relates to the line pull of the winch. Therefore if the winch does not
produce the specified maximum line pull, a loss of hydraulic pressure in the hydraulic system
can be analysed. In the condition exists, install a pressure gauge into the pressure line leading
to the pulling port on the hydraulic winch motor.
3. Troubleshooting chart
Only if the hydraulic system has been checked and found to be in order, use the following
indications for possible causes of failure in the winch.