Kanga PW628, Operator'S Manual

Page: 52 / 69

52
PRESSURE SETTINGS
Before adjusting anything on the trencher valve check all main pressure settings as outlined in
chapter “Service Tasks - Hydraulics’ from the Operators Manual.
With the same setup as outlined there: hydraulic oil warmed up, pressure gauge (0-300 bar / 0-3400
PSI) plugged into test point, engine running at full speed (3600 rpm) do the following:
Over Centre Valve (3) Setting
Flow Control Valve (1) fully closed (turned clockwise).
Aux. Lever (3) on main control valve
down (trencher chain running forward).
The pressure should be set at: 69 – 76 bar (1000-1100 PSI) on all models.
Sequence Valve (4) Setting
Flow Control Valve (1) fully closed (turned clockwise).
Aux. Lever (3) on main control valve up (trencher chain running backwards).
The pressure should be set at: 186 bar (2700 PSI)
on Mid Range Petrol Models
203 bar (2950 PSI) on Mid Range Diesel Models
Checking Trenching Valve Function
• With trencher above ground and chain running forward (Aux Lever (A) down) pull both drive
levers backwards (to reverse Loader) and then start opening Flow Control valve (1) slowly.
• The loader should start moving backwards.
• The more the valve is opened the faster the loader should move.
Sequence Valve (4) Overcentre Valve (3
)
Flow Control (1)
A