JLG sky trak mmv Service Manual page 47

Outer Primary Element
All air cleaner manufacturers agree that attempting to
clean or wash an element increases the chance for ele-
ment damage. It is highly recommended that you consid-
er the value of cleaning an element against the risks that
could lead to engine damage. Adopt the policy that all el-
ements should be replaced with new and not cleaned.
Inner Safety Element
An inner safety element should NEVER be washed or re-
used. ALWAYS install a new element.
Replace safety elements after every third primary ele-
ment 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.
CAUTION:
with only the safety element installed. Severe
engine damage will result from dust entering
the engine.
2
To change elements:
1. Pull the air cleaner cover lock (2) out, turn the air
cleaner cover (3) counter-clockwise and remove the
cover from the air cleaner canister (4).
2. Remove the primary element (5). Inspect the
element for damage. Damaged elements should
never be reused.
3. Thoroughly clean the interior of the air filter canister
(6) and vacuator valve (7).
Model MMV Rev. 12/04
General Information, Specifications and Maintenance
NEVER run the engine
4
3
OM0980
4. If replacing the inner element (8) at this time,
carefully slide the element out. Always discard this
element and replace with a new element.
5. Slide the new primary element over the inner
element making sure the sealing edge is flush with
the base of the air cleaner.
IMPORTANT: DO NOT apply any type of petroleum
product to the sealing surface of the filter in an attempt to
get a more positive seal. This will cause sealing surface
damage and allow dirt to by-pass the filter. Use liquid
dishwashing soap (Ivory, Dawn, etc.) on the seal of the
filter only.
6. Position the canister cover (3) in place, turn
clockwise to lock into position and secure in place by
pushing the air cleaner cover lock (2) all the way in.
8
5
3
2
6
7
c. Air Intake System-Inspection
1 000
MS21902
Inspect the intake piping for cracked hoses, loose
clamps, or punctures that can allow dirt or debris to enter
the combustion chamber. If dirt or debris is allowed to en-
ter the combustion chamber, it can severely damage the
engine. If necessary, tighten or replace parts to help pre-
vent air intake system leakage.
OM0990
OT0880
2.31