Landoll Bendi B40i4 Maintenance Manual Download

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3-34

F-581-R1

TROUBLESHOOTING AND CORRECTIVE MAINTENANCE

To Check and/or Adjust Steer Pump

Pressure

First, review “

Before You Begin,” page 1-1.

Set the key switch to “OFF” and remove the key from
the ignition switch.

For ease in checking pressure Landoll Service offers
a

Pressure Check Kit (p/n: 0018152) which includes

a 3,000 psi (21 MPa) pressure gauge, hose and
quick-coupler).

If you are using your own system, have shop rags
and a small container to manage spills.

5. Turn the steering wheel briefly from one side to the

other to relieve system pressure - allow oil to drain.

Connect the pressure check kit quick-coupler (female
end) to the coupler (male end) on the control valve.

Start the truck.



CAUTION

8. Turn the steering wheel fully to the right and hold the

wheel to allow pressure buildup. The pressure
reading must be 1900 psi, 65 psi (18 MPa, ±0.3 MPa)
maximum.

Release the steering wheel.

IMPORTANT

DO NOT hold the steering wheel (bottomed out) for
long periods of time because excessive pressure is
applied to the circuit which can, over long periods of
time, damage internal components.

10. Remove the cap from the hex adjusting screw,

turning the screw clockwise increases pressure or
counterclockwise to decrease pressure.

11. Tighten locknut after adjustment

12. If the pressure is low and cannot be adjusted to the

proper value, check the pump and make sure there
are no leaks in the hydraulic system.

13. If the pressure is too high and cannot be adjusted to

the proper value, replace the steering orbital.

14. Turn the steering wheel from one side to check the

hydraulic connections for leaks.

15. With pressure set at 1900 psi, +/- 65 psi (18 MPa,

±0.3 MPa) maximum, set the key switch to “OFF”.

Hydrostatic Pump

Charge Pressure Check

NOTE

• A 600 psi gauge must be used for an accurate

reading (Landoll p/n 133929). Internal repairs cannot
be done to the hydrostatic drive. The entire unit must
be replaced. If the Bendi B40i4 is exhibiting
diminished gradibility or reduced top speed, then one
must examine the hydrostatic drive system.

The hydrostatic transmission is a system consisting of a

pump and two wheel motors. If conditions exist that
indicate wear within any single component, Landoll
Corporation recommends that all components be
replaced. This practice will ensure that repairs made to
the lift truck will result in a productive machine.

Connect gauge to test ports at the brake valve. See
Figure 3-25.

Start the engine and allow the B40i4 truck to run for
approximately 15 minutes to warm the hydraulic oil to
150 degrees, by viewing the thermometer found in oil
level sight glass on side of tank.

Monitor the charge pressure. If pressure is below 250
psi (17 bar), replace drive filter (p/n:146356).

Monitor charge pressure after a filter change. If
pressure is still below 250 psi (17 bar) problems exist
within the drive system. To further verify that the
drive system needs repair/replacement, place the
forklift against an immovable object. Monitor charge
pressure while slowly depressing the accelerator
pedal. If charge pressure decreases with increased
load, the drive system must be replaced.

To adjust pressure, the truck (pump) must be

running to create hydraulic pressure. Always pay
attention and use caution when servicing the
truck while it is running.