Section 6: Maintenance
4220ST & 4420ST Light Utility Vehicles 700-504M
8/05/08
32
Table of Contents
Engine Air Filter Maintenance
Refer to Figure 6-8 & Figure 6-9:
1.
Replace filter element with Land Pride filter element
No. 839-323C every 300 hours or every year,
(whichever comes first). Service more frequently
when used in dusty conditions.
2.
Release retaining clips (#5) to remove canister access
cover (#4) and filter element (#3). Clean canister (#2)
with a damp cloth.
3.
Before installing new filter element, inspect it by
placing a bright light inside and rotate element slowly,
looking for any holes and tears in the paper. Also
check gaskets for cuts or tears. Do not attempt to use
a damaged element. A damaged element will allow
abrasive particles to enter the engine.
4.
Install new filter element (#3) with open end first.
5.
Reinstall canister access cover (#4). Make sure it
seals all around canister body (#2) before tighten
retaining clips (#5).
6.
Check rubber burp cap (#6). Clean if plugged.
7.
Check all fittings and clamps periodically for tightness.
Inspect hoses for holes or cracks.
8.
Periodically check engine intake hose (#1) for signs of
ingested dust. Locate and repair source of ingested
dirt.
9.
Never operate vehicle without a filter element (#3).
Figure 6-8
NOTE: Do not operate engine with a damaged air filter
or without an air filter element. Dirt will enter engine
causing dust ingested engine problems.
NOTE: Do not block air intake to air cleaner. Placing
an object on the platform in front of the air intake
snorkel or allowing loose clothing to drape over the
snorkel could block the snorkel opening.
24705
Insert Open End First
Location - Under Hinged Seat
Figure 6-9
Engine Air Filter Handling
Refer to Figure 6-8 and Figure 6-9:
A specially designed dry filter is standard equipment on
the Treker and supplies clean combustion air to the
engine.
Prevent costly and non-warrantable premature engine
damage by maintaining the vehicle air filter properly.
Many engine problems are due to improper handling of
the air filter. Dust and dirt that gets pass the air filter will
damage engine cylinder, piston and bearings in a few
hours.
Prevent costly and non-warrantable premature engine
problems by avoiding the following common mishandling:
•
Over servicing
•
Improper installation
•
Damaged air filtering system
•
Incorrect air filter element
Over Servicing
Over servicing occurs when an air filter element is
inspected and/or replaced too often. Dust and dirt can fall
off the filter element onto the canister where it can be
sucked into the intake system. Only a few grams of dirt
getting into an engine during each filter inspection can
prematurely produce dust ingested engine problems.
A partially dirty air filter element is not harmful to the
engine.
The air filter element should be changed before it
becomes too dirty and restricts air flow to the engine
hindering its performance. Replace air filter element
immediately should this happen. Engines that do not get
proper amounts of air will draw in excessive amounts of
gas causing premature engine problems.
Retaining Clip
Air Cleaner
Canister
Access Cover
24704
Air Intake
Snorkel