Service Manual User Manual

Section 2
2-20
2.12.3 Air Cleaner
A. Engine Air Filter Restriction Warning Indicator
Figure 2–12. Engine air filter restriction warning indicator.
The operator’s display panel includes an indicator light
(Fig. 2–13) that illuminates to alert the operator when
restricted air flow to the engine is sensed. This indicates
that the air filter needs servicing. NEVER operate the
vehicle without the air cleaner assembly and both filters
in place.
Figure 2–13. Location of engine air cleaner components.
B. Air Cleaner Element: Change or Clean
Figure 2–14. Change or clean the air filter element.
As indicated by the air cleaner restriction indicator, and/or
every 500 hours, change or clean the air cleaner element.
Outer Primary Element
All air cleaner manufacturers agree that attempting to
clean or wash an element increases the chance for ele-
ment damage. Consider the value of cleaning an element
against the risks that could lead to engine damage.
Adopt the policy that all elements should be replaced
with new and not cleaned.
Careful cleaning or washing, if done correctly, can extend
the life of an element. Each time an element is cleaned,
the dirt-holding capacity is reduced and the risk of dirt
reaching the clean side of the filter is increased. Filters
should NEVER be washed more than six times or
retained for more than one year's service, whichever
comes first.
If an element is washed, use a non-sudsing detergent
that dissolves combustion residues without damaging the
filter media. One such detergent that is specifically
formulated for this purpose is
FM 1400
. This cleaner
contains biodegradable synthetic detergents and is
environmentally safe.
FM 1400
is marketed by:
Filter Service Corp.
2105 W. Apache
Farmington, New Mexico 87401
Telephone: [phone]
Inner Safety Element
An inner safety element (Fig. 2–15) should NEVER be
washed or reused. ALWAYS install a new element.
Replace safety elements after every third primary element
change. DO NOT remove a safety element until the
inside of the air cleaner canister is thoroughly cleaned.
This will help prevent dirt that could damage the engine
from entering the induction manifold.
IMPORTANT: NEVER run the engine with only the
safety element installed.
1
2
34
F
N
R
P
D
Engine Air Filter Restriction
Warning Indicator
OS0222
Early Production
Current Production
Engine Air Filter Restriction
Warning Indicator
OS0440
Air Cleaner Cover
Air Cleaner
Retaining
Clips
Vactuator
Valve
500
OS0790
MS2180
Model 3606
•
Origin 10/99