TM 9-2330-356-14
CAUTION
With preheater switch in the PREHEAT
position, 12V DC Is applied to manifold
heaters. Do not handle manifold heaters with
preheater switch in the PREHEAT position.
Test. Remove electrical leads to manifold heaters.
b.
manifold heater to ground. Open circuit indicates faulty
manifold heater.
c.
Removal.
TA099788
(1) Disconnect negative battery cable from
CAUTION
(3) Disconnect five electrical leads (1,2,3,4, and
With preheater switch In the PREHEAT
5, fig. 4-32) from manifold heaters by removing nuts (6).
position, 12V DC Is applied to the glow plug
body. Do not handle glow plug with preheater
(4) Remove connecting bar (7).
switch In the PREHEAT position.
(5) Unscrew manifold heaters (8) from air intake
Test. Remove electrical lead to glow plug. Use
b.
manifold (9).
plug and ground. Open circuit indicates bad glow plug.
Installation.
d.
Removal. Disconnect negative battery cable at
c.
(1) Screw manifold heaters (8, fig. 4-32) into air
battery. Disconnect lead to glow plug. Unscrew glow plug
intake manifold. Tighten to 10-15 lb.-ft.
and remove it from cylinder head. Remove gasket with a
hooked wire, then replace.
(2) Reinstall connecting bar (7), electrical leads
Installation. If gasket has been removed, place
d.
(1 through 5), and nuts (6) to manifold heaters.
new gasket over glow plug. Coat plug threads with
(3) Close engine cover panel.
plug into cylinder head. Tighten glow plug to 10-15 Ib.-ft.
Connect electrical lead to plug. Connect negative battery
(4) Connect negative battery cable to battery
lead to battery.
4-22. High
Temperature Switch, Oil Pressure
Glow Plugs
WARNING
WARNING
When troubleshooting an electrical malfunc-
When troubleshooting an electrical malfunc-
tion or performing electrical maintenance,
tion or performing electrical maintenance,
ALWAYS disconnect Intervehicular electrical
ALWAYS disconnect Intervehicular electrical
cable from semitrailer, and negative battery
cable from semitrailer, and negative battery
cables at batteries. Failure to follow this warn-
cables at batteries. Failure to follow this warn-
ing may create a spark and explosion, result-
ing may create a spark and explosion, result-
ing In serious injury or death to personnel.
ing in serious injury or death to personnel.
a.
General.
physical damage. Check that electrical lead to glow plug is
clean and tight. Check for leakage, indicated by oily
mounted on the engine just below the exhaust manifold on
residue, where glow plug enters cylinder head.