Fiat Kobelco EX355 Tier2, Technical Manual

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T5-4-60 EX355
TROUBLESHOOTING B
ENGINE SPEED ADJUSTMENT AND
ENGINE LEARNING
When the following repair or inspection is made, or
when engine speeds deviate from the specifications,
perform the engine speed adjustment and engine
learning.
•
When the engine, engine control cable, or EC
motor is removed.
•
When MC is replaced.
Engine Speed Adjustment:
1. Turn the key switch to START and run the engine.
(Note: Turn the air-conditioner switch OFF.)
2. Turn the engine control dial to the minimum speed
position. (EC sensor voltage is set to
2.5 V.)
3. Loosen the bolt tightening the control lever to the
EC motor output axis.
4. While checking the engine actual speed with
Dr.EX or a tachometer, adjust the control lever to
conform the slow idle speed specification.
Specification: Refer to Operational Performance
Test section.
5. Tighten the bolt to secure the control lever to the
EC motor output axis.
: 13 N
⋅
m (1.3 kgf
⋅
m, 9.4 lbf
⋅
ft)
NOTE - Take care not to allow oil or grease to stick
to the motor output axis.
6. Perform engine learning.
Engine Learning :
1. Turn the key switch OFF.
2. Remove Dr.EX. Wait for 5 seconds.
3. Turn the engine learning switch ON.
4. Turn the key switch ON. Wait for 5 seconds.
5. Turn the key switch OFF. Wait for 5 seconds.
6. Turn the engine learning switch OFF.
7. Check the engine speed.
Bolt
Tightening
Control Lever
SM0643
SM0108
NOTE - If the engine does not stop with the key switch
OFF, pull the fuel shut-off handle under the operator's
seat to stop the engine
Engine
Learning
switch