Hyundai Seasall S220P, Workshop Manual, Page: 85 / 150

Engine Electrical System 84 Preheating System
heating pin is pressed in. In the heating pin there are
the heating spiral and the sensor spiral, both are
connected in series and embedded in a ceramic mass.
Purpose
• Prior to engine starting : To make quickly available a
hot surface of approximately 850
℃
(1562
℉
), where the
air-fuel mixture evaporizes and ignites during the
compression stroke.
• While engine starting : To support the engine run-up.
• After engine starting : To improve the idle running
and to reduce the emissions of blue smoke, pollutants
and noise.
Inspection
The specified electrical data below are related to the
nominal voltage and to an ambient temperature of
22.5~23.5
℃
(72.5~74.3
℉
) on new glow plugs.
Current Consumption
-------------------------------------------------------------------
Initial current at 11V : less than 27.0A
Operating current after 5 sec : less than 9.0A
Operating current after 60 sec : less than 8.0A
-------------------------------------------------------------------
Cold Resistance
The measured values are valid for 4 minutes at nominal
voltage or for 10 minutes at 980
℃
(1796
℉
) pre-oxidized
glow plugs
------------------------------------------------------------------------
Glow plug resistance at 18~22
℃
(64.4~71.6
℉
) :
410±110mΩ
------------------------------------------------------------------------
Removal
1. Remove the inlet lower and upper manifold
assembly.(Refer to Intake manifold in this Group)
2. Remove the glow plugs (A).
Glow Control Unit
Removal
1. Remove the main bracket.
2. Remove the glow plug control unit(A).
------------------------------------------------------------
Tightening torque :
6.9 ~ 10.8Nm (0.7 ~ 1.1kgf.m, 5.1 ~ 8.0lb-ft)
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