Linhai ARCHON 400, Руководство по обслуживанию

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CHAPTER 3 ENGINE
BUCK 450 SERVICE MANUAL 20.0
ACTION REASON
DO: The module heat sink and back plate must not
be used as a connection point when jump starting
the engine.
The high level of voltage and current which the
module could be subjected to, could cause module
performance degradation or failure.
DO: Connection of the module back plate to
vehicle ground is desirable whenever possible.
This greatly reduces potential ground loops and acts
as a heat transfer source from the module.
DO: The ignition system ground wire should be
kept as short as possible. And, when permissible,
should be grounded at the same engine block
position as the engine controller.
This would greatly reduce the possible of unwanted
electrical ground loops.
DO: The electrical wiring to the ignition system
should be routed so that the conductors are
protected from excessive heat, damage, and wear.
Helps prevent electrical intermittent, open or shorted
operating conditions.
DO: Ignition secondary leads should not be routed
with the ignition primary harness or any other
electrical harness.
Voltage spikes can be transmitted from the secondary
cables into other leads which are in close. This could
create a component performance degradation or
failure condition.
DO: Spark plug wires(secondary leads) & primary
wiring:
- must not contact sharp surface.
- must not be under tension between fixed points.
- must be clear of moving parts (belts, fan, etc…).
- must be protected from or kept at least 125 mm
away from radiant heat source exceeding 400 F.
- must be protected from environmental damage
(dirt, splash, oils, fluids, etc….).
- must be retained, secured or insulated to prevent
pinching, misrouting, rattles, and squeaks.
Spark plug wires carry very high voltage (30,000 volt).
If the secondary lead loses its dielectric
characteristics thru being nicked, cut , chaffed, then
an arc thru to a nearby ground could take place. This
kind of condition could lead to misfire, no start, or
premature failure of ignition system.
DO: Not all fasteners are designed for repeat use.
Beware of fastener specifications. All harnesses
should be supported within 6" of a mating
connection.
Adequate retention force might not be achieved if the
fastener is not designed to be reused. Mating
connections are not designed to support the weight of
the harness assembly.
DO: For removing spark plugs follow the following
steps:
1- Grasp the spark plug boot and gently rotate
90
°
; and then pull the spark plug boot and cable
away from the spark plug.
2- Before removing spark plug, brush or air blast
dirt away from the well areas.
3- Use correct size deep socket wrench to loosen
each spark plug one or two turns.
To remove spark plugs from Aluminum heads, allow
the engine to cool. The heat of the engine, in
combination with a spark plug that is still hot, may
cause the spark plug threads to strip the cylinder head
upon removal.
Use goggles to protect eyes from dirt when applying
compressed air to spark plug wells.
CHAPTER 3 ENGINE PAGE. 3- 76