Linhai ATV 500-D T3 EFI, Service Manual

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CHAPTER 3 ENGINE
LH500ATV-D T3 EFI SERVICE MANUA 19.0
CHAPTER 3 ENGINE PAGE. 3- 124
being exposed to these ambient conditions.
Normal Operating Temperature Range: - 30 to 125C
Extreme Operating Temperature Range (some performance degradation): - 40
to 150C
Storage Temperature Range: -60 to 60C
3.6.2.2.7 Fuel Contamination
The injector fuel inlet filter protects the fuel injector from initial build fuel
contamination as well as from fuel system assembly contamination. Filtration is
extremely important because particle contaminants can cause an injector to stick
open, flow shift or tip leak.
The injector inlet filter is not a serviceable component and is designed only to trap
potential built-in contamination between the chassis fuel filter and injector.
3.6.2.2.8 Wire Routing
Electrical wiring to the injector should be routed so that conductors are
protected from excessive heat, damage, and wear.
Avoid unnecessary handling (disconnecting and connecting) of the electrical
connector.
3.6.2.2.9 Handling - DOs & DONTs
ACTION REASON
DO NOT : Re-use injector seal rings if at all
possible. If no other choice exists, take extra
care in inspecting the seal rings for damage.
Leakage.
DO NOT : Dip injector tips into lubricants. Can plug injector spray orifices.
DO NOT : Cycle injector repeatedly without fuel
pressure.
Damage to internal mechanical components.
DO NOT : Pulse (actuate) a suspected high leak
rate injector (leak >50 sccm air)
Can dislodge internal contamination if
DO NOT : Allow water to enter fuel system from
air lines, etc. during leak checks.
Can damage injectors.
DO NOT : Contact or apply load to the injector tip
for installation.
Apply load to 45 deg angle on nylon over mold
see
DO NOT : Pound injectors into manifold during
assembly to engine.
Can damage injectors or seal rings.
DO NOT : Apply excessive side loads to
electrical connectors.
May cause loss of electrical continuity.
DO NOT : Use any dropped unit. Internal damage may have occurred.
DO NOT : Store injectors, rails, or
subassemblies including engines on which the
injectors have been installed in an unprotected
environment.
External contamination can damage the
injector electrically and/or mechanically.
DO NOT : Use the injector as a handle. Do not use the injector to lift assemblies
DO NOT : Rack, stage, or handle parts in a
manner that allows contact between parts.
Damage will occur.
DO NOT : Remove packing in a way that allows
contact between parts.
Damage could occur due ton contact
between parts
DO NOT : Tap on fuel injectors to correct any
malfunction..
Can damage injector.
DO NOT: Replace the injector with other part
number not recommended for this application
Will severely affect the performance of the
injector
DO: Take extra care when installing new fuel
seal ring over injector inlet flange.
Prevent tearing seal ring during installation
DO : Use proper lubricants on seal ring surfaces
to install injector in engine. Minimize time
between applying lubricant and inserting injector
/rail.
Avoid damage to seal ring during
installation.
Avoid contamination at seal.
DO : Pulse (actuate) stuck closed or tip-leak
suspected injector (Actuate consists of one
pulse<5 sec duration at 9 to 15V).
To verify the injector failure
DO : Pulse (actuate) injectors prior to a dry fuel Injector valves may not reseat without fuel