TM 5-3810-307-24-1-2
Glow Pin. (Refer to Figures J-19 and J-20.)
Removal.
a.
Ensure battery disconnect switch is in the OFF position.
b.
Remove two bolts (1, Figure J-19) and remove cover (2) from boxed enclosure (3) of the
coolant heater (4).
c.
Remove the control unit (2, Figure J-20) as described above.
d.
Remove nut and washer securing the glow pin harness (32) to glow pin (30).
If
necessary, cut tie wraps (23) and remove the glow pin harness (32).
e.
Remove glow pin (30) and seal (31) from burner assembly (4). Discard seal (31).
Installation.
a.
Install new seal (31, Figure J-20) and glow pin (30) into burner assembly (4).
b.
If removed, route glow pin harness (32) as removed and secure with new tie wraps (23).
c.
Connect glow pin harness (32) to glow pin (30) with nut and washer (part of glow pin).
d.
Install coolant heater control unit (2) as described above.
e.
Replace cover (2, Figure J-19) on boxed enclosure (3) and secure with two bolts (1).
Overheat Sensor. (Refer to Figures J-19 and J-20.)
Removal.
a.
Ensure battery disconnect switch is in the OFF position.
b.
Remove two bolts (1, Figure J-19) and remove cover (2) from boxed enclosure (3) of the
coolant heater (4).
c.
Cut tie wrap (23, Figure J-20). Then remove screws (6), lockwashers (8), and cover (9).
d.
Tag and disconnect wiring from overheat sensor (12).
e.
Remove screws (11), overheat sensor (12), and preformed packing (13).
Discard
preformed packing (13).
Installation.
a.
Install overheat sensor (12, Figure J-20) with new preformed packing (13) into outer
casing (15) of heat exchanger (20) and secure with screws (11).
b.
Connect wiring from overheat sensor (12) as tagged. Remove tags.
c.
Install cover (9), lockwashers (8), and screws (6). Install new tie wrap (23).
d.
Replace cover (2, Figure J-19) on boxed enclosure (3) and secure with two bolts (1).
J-46 Change-1
