Branson F42r - Front Outlet Valve; Relief Valve Pressure Test; Hst Neutral Setting [Hst Model]

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42hW-201601
CHAPTER 6 HYDRAULIC SYSTEM
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3015R(h)/3515R(h)/4015R(h)/F36R(h)/F42R(h) TRACTOR
8.3 FRONT OUTLET VALVE
8.3.1 RELIEF VALVE PRESSURE TEST
1. Unscrew the plug for relief valve pressure
checking (PF1/4)(D) of the front outlet valve and
connect an adapter, hydraulic pressure gauge
and hydraulic hose.
2. Start the engine and run it at 2,600 rpm.
3. With the 3-point link fixed to the structure or
certain load applied to the structure, pull the
position control lever backward and observe that
the pressure gradually rises. Then, check the
pressure value when it starts to drop.
4. Check the pressure value when the relief valve
operating sound is heard with the rear SCV valve
pulled (if equipped).
Relief setting pressure:
180 ~ 185 kgf/cm
2
(17.64 ~ 18.13 MPa / 2,560 ~ 2,631 psi)
5. Ifthepressurecannotreachthespeciedvalue,
adjust the relief valve or replace the front outlet
valve.
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K42W661A
8.4 HST NEUTRAL SETTING [HST MODEL]
A42W642A
A42W643A
1. Lift the vehicle off the ground so that the wheels
idle above the ground.
2. Set the engine to idle speed.
3. Set the range shift lever to the low position.
4. Check if the wheels rotate forward or backward
with the HST pedal released.
5. If the wheels rotate in the forward direction with the
HST pedal released, unscrew the mounting bolt (2)
and turn the shaft (1) counterclockwise slowly as
showninthe gure.Tightenthe mounting bolt to
the position where the wheels stop rotating.
6. If the wheels rotate in the backward direction, turn
theshaft(1)clockwisetondthepositionwhere
thewheelsstoprotating.Then,xtheshafttothat
position by tightening the mounting bolt (2).
Adjust the forward/reverse driving condition
with the mounting bolt (2) t loosely.
Adjust the shaft (1) using a 32-mm spanner.
In the neutral state, the mounting bolt (2)
forms an "I" shape.
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Notes