Harper 301012, Руководство оператора

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HK4400
Hopper Maintenance/Service
Liner Inspection
• The hopper assembly includes a bolt-
on replaceable UHMW plastic liner.
• To access the liner for inspection,
open the hopper door and install the
hopper door safety lock.
• Inspect wear liner every 250 hours.
Replace liner before it wears through
to the hopper sheet metal. The part
number for the hopper liner is 302121.
When operating in sandy conditions,
inspect every 100 hours.
Return Air Screens
• Inspect return air screens located
inside the hopper to ensure that
screens are clear of debris to allow
proper return air flow. Clear debris as
needed.
To move the machine without the engine
running, the park brake must be released,
and the bypass valve must be opened on the
propulsion pump.
Park Brake Release
• Each wheel motor contains a park
brake that is mechanically applied and
hydraulically released. When the
engine is OFF the park brakes are
applied to all wheel motors.
PRECAUTION
Towing or pushing the unit with the park
brakes applied may cause serious dam-
age to internal brake parts.
• The park brakes can be released by
applying hydraulic pressure to each of
the wheel motors brake release ports.
To accomplish this, follow the steps
below.
Procedure
• Locate the brake release valve located
behind the operator’s seat and below
the engine shields.
LINER
RETURN AIR
SCREENS
Tow Procedure
BRAKE RELEASE
VALVE
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