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WALKER MANUFACTURING COMPANY
July 2006
SERVICE INSTRUCTIONS
CLEANING
Engine Air Cleaner System - Model MS, MC, MD,
MT
Model MC, MD, MT
There are two main components in the engine air clean-
er system: a turbine precleaner and a Donaldson Radi-
alseal™ air cleaner. Each component is checked,
cleaned and maintained on a different schedule based
on the filtering action required. Each component is ser-
viced as follows:
Turbine Precleaner - Model MC, MD, MT
The turbine precleaner is mounted on a remote air in-
take tube connected to the Donaldson air cleaner. A
spinning fan driven by the intake airflow separates dust
from the air, giving the initial stage of air cleaning. Dust
particles are exhausted through a single small vent in
the side of the housing. Since no dust is trapped, the
precleaner operates without cleaning. The only main-
tenance required is to check the operation of the inter-
nal fan every 100 hours. Verify operation:
1. Look into the exhaust vent while shining a light into
the intake.
2. Start the engine and watch the fan begin to spin as
the throttle is advanced.
If the fan is not spinning, service or replace the pre-
cleaner as required.
Turbine
Precleaner
Precleaner
Tube
Hose
Clamp
Engine
Donaldson Air
Cleaner Cover
Vacuator™
Valve
Air Intake
Hose
Safety
Filter
Donaldson Air
Cleaner
Air Restriction
Gauge
Air Cleaner
Cartridge
Engine Air Cleaner System Components - Model MT, MTL, MTEFI
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