PRINTED IN U.S.A.
67
913225/CP0807
D6 - COUNTER-BALANCE VALVE
CHECK
To be performed after the first 50 hours of operation
and then every 500 hours.
Park the telescopic handler on level ground, apply the
parking brake and shift the transmission into neutral.
PURPOSE OF COUNTER-BALANCE VALVES
- The counter-balance valves protect the user from
any risk due to a sudden drop in hydraulic pressure
or failed hose.
TESTING EACH HYDRAULIC CIRCUIT
LIFTING CIRCUIT:
- Start the telescopic handler and raise the boom to
about 45°.
- With the engine running at mid-speed, lower the
boom. While the boom is lowering, turn off the
engine. Movement should slow as the engine speed
falls and stop when the engine stops.
TELESCOPING CIRCUIT:
- Start the telescopic handler and raise the boom as far
as it will go, and extend the telescopic section com-
pletely.
- With the engine running at mid-speed, retract the
boom. When retracting the boom, turn off the
engine. Movement should slow as the engine speed
falls and stop when the engine stops.
TILT CIRCUIT:
- Place a nominal load on the forks, and anchor it
securely to prevent it from falling off during the test.
- Start the telescopic handler and tilt the carriage rear-
ward, lifting the boom sufficiently to allow the car-
riage to tilt.
- With the engine running at mid-speed, tilt the car-
riage forward. While it is tilting, turn off the engine.
Movement should slow down as the engine speed
falls and stop when the engine stops.
WARNING
Keep everyone well away during these inspec-
tions.
In all cases, the counter-balance valve must
be repaired or replaced if hydraulic movement
continues after the engine has been turned
off.
Never use the telescopic handler with a defec-
tive counter-balance valve.
D7 - PARKING BRAKE LEVER
MECHANISM
GREASE
- Clean and lubricate pivot pins (1) (fig. D8) with oil
(see chapter: 6 - MAINTENANCE: LUBRICANTS
AND FUEL).
D8 - BATTERY ELECTROLYTE
DENSITY
CHECK
The electrolyte density
varies depending on the
temperature, but a mini-
mum specific gravity of
1.260 at 60°F (16°C)
must be maintained. In
the shaded area (fig.
D10), the battery is in a
normal charged condition.
Readings above this zone indicate that the battery
needs to be recharged.
- Check the electrolyte density in each battery cell
using a hydrometer.
The density should not vary more than 0.025 units
between cells.
WARNING
Handling and servicing a battery can be dan-
gerous. Take the following precautions:
- Wear protective goggles.
- Keep the battery horizontal.
- Never smoke or work near a open flame.
- Work in a well-ventilated area.
- In the event of electrolyte being spilled onto
the skin or splashed in the eyes, rinse thor-
oughly with cold water for 15 minutes and
call a doctor.
D8
D7
1
1
1