48
Maintenance Instructions
CLEANING
CLEANING
CAUTION
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 Cum-
mins/Fleetguard OptiAir™ air cleaner. Each compo-
nent is checked, cleaned and maintained on a differ-
ent schedule based on the filtering action required.
Each component is serviced as follows:
Turbine Precleaner
The turbine precleaner is mounted on the Cummins/
Fleetguard 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 ex-
hausted 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 opera-
tion of the internal fan
every 100 hours.
Verify op-
eration:
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.
Cummins/Fleetguard OptiAir™ Air Cleaner
A remote mounted Cummins/Fleetguard OptiAir™
air cleaner provides the air filtering function. The
primary filter element slides over an outlet tube
inside the air cleaner canister with
radial
sealing
action, eliminating the possibility of dust leaks due to
improper filter installation. Intake design, internal
baffling, and a dust ejection valve provide dust
separation and automatic precleaning action. Daily
or frequent servicing of the air cleaner
is not
required.
Use the air filter restriction gauge on the
air cleaner outlet to indicate when the air filter needs
servicing -- a yellow indicator will show when the filter
is overly restricting airflow into the engine.
Engine Air Cleaner System Components
860
0-1
2
Hose
Clamp
Dust Ejection
Valve
Primary Filter
Element
Safety
Filter
Air Cleaner
Band
Cummins/Fleetguard
Air Cleaner
Cummins/Fleetguard
Air Cleaner Cover
Air Intake
Hose
Engine
Hose
Clamp
Hose
Clamp
Air Filter
Restriction Gauge
Precleaner