Honey Bee Grain Belt Plus, Owner'S Manual

Page: 63 / 179

Honey Bee Manufacturing Ltd.
Grain Belt Plus Header – Owner's Manual
1. Loosen the lock nut on the relief valve.
2. Insert an Allen wrench into the screw on the top of
the relief cartridge, and gently turn clockwise. (One
full revolution of the screw will give an increase of
approximately 500 psi, so turn no more than 2/5 of
a full revolution.)
3. With Allen wrench still inserted, hold the screw in
place and retighten the lock nut. Repeat the above
procedures for the other relief valve. *To reduce the
pressure later, repeat above procedures with a
counter-clockwise motion on the screw.
The relief valve screw has safety stop rings installed on its threads to prevent
the valve from being over-adjusted.
It is important to not force the screw past its stop points, turn the Allen wrench
using only your fingers; paying special attention to any resistance you
encounter.
If you wish to verify the pressure setting for the relief valves, disconnect the
3/4” quick couplers. This creates a dead-end for the oil flow. When the knife
drive encounters this resistance, pressure will build in the hydraulic circuit,
activating the relief valve. The pressure shown on the pressure gauge will
indicate the setting of the relief valve.
Low Pressure Checks
If the pressure at the main pressure gauge is low or is
fluctuating, shut the combine down, and check the
level of oil in the combines hydraulic tank. The oil
level should be at the top of the sight glass as per the
combine operator's manual. Also ensure that the
pump supply line is connected.
If the knife stalls while cutting, check for:
●
low oil level;
●
leaking relief valve;
●
worn pump.
If low oil level is not the cause of low oil pressure, it will be necessary to install
a flow meter to determine the cause. Contact your dealer for assistance.
Rev. 07 - 07/29/08 61
Illustration 5-4: Relief Valve
Illustration 5-5: Main Gauge
Main Pressure Gauge
Supply Line