Cleaning; Engine Air Cleaner System; Turbine Precleaner - Walker D21d Operator's Manual

Maintenance Instructions

CLEANING

If a pressure washer is used on the ex-
posed working parts, avoid water on the
electrical parts and the engine cooling
system.

Engine Air Cleaner System

There are two main components in the engine air
cleaner system: a turbine precleaner and a Donald-
son Radialseal™ air cleaner. Each component is
checked, cleaned and maintained on a different
schedule based on the filtering action required.
Each component is serviced as follows:
Turbine
Precleaner
Precleaner Tube
CAUTION
Air Filter
Restriction Gauge
Hose
Clamp
Hose
Air Intake
Clamp
Hose
Engine Air Cleaner System Components

Turbine Precleaner

The turbine precleaner is mounted on a remote air
intake 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 clean-
ing. Dust particles are exhausted through a single
small vent in the side of the housing. Since no dust
is trapped, the precleaner operates without clean-
ing. The only maintenance required is to check the
operation of the internal fan every 100 hours. Ver­
ify 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.
Hose
Clamp
Hose
Clamp
Safety
Mounting
Donaldson
Band
Air Cleaner
Engine
CLEANING
Donaldson Air
Cleaner Cover
Cover
Latch
Dust Ejection
Valve
Primary Filter
Element
Filter
65