TM 5-3810-307-24-1-2
e.
Remove combustion blower and cover (25) as described above.
f.
Remove the temperature sensor (22), overheat sensor (12), and flame sensor (24) as
described above.
g.
Remove four socket head capscrews (26) and washers (29) and separate the burner
assembly (4), outer casing (15), and heat exchanger (20).
h.
Remove two screws (21) and separate the heat exchanger (20) and outer casing (15).
Remove and discard preformed packing (19).
Installation.
a.
Assemble the heat exchanger (20, Figure J-20) and outer casing (15) with a new
preformed packing (19) and two screws (21).
b.
Assemble the burner assembly (4), outer casing (15), and heat exchanger (20) and
secure with socket head capscrews (26) and washers (29).
c.
Install the temperature sensor (22), overheat sensor (12), and flame sensor (24) as
described above.
d.
Install combustion blower and cover (25) as described above.
e.
Install the control unit (2) as described above.
f.
Install engine coolant heater (4, Figure J-19) as described above.
g.
Replace cover (2) on boxed enclosure (3) and secure with two bolts (1).
Water Pump. (Refer to Figures J-19 and J-20.)
Removal.
a.
Ensure battery disconnect switch is in the OFF position.
b.
Drain engine coolant from diesel engine in accordance with the Technical Manual, TM 5-
3810-307-24-1-1.
c.
Remove two bolts (1, Figure J-19) and remove cover (2) from boxed enclosure (3) of the
coolant heater (4).
d.
Loosen hose clamps then tag and disconnect coolant hoses from COOLANT IN and
OUT fittings (5) on boxed enclosure (3) of coolant heater (4).
e.
Loosen clamps (47 and 49) and disconnect coolant hose (48) at water pump (17, Figure
f.
Cut tie wrap (23). Then remove screws (6), lockwashers (8), and cover (9).
g.
Tag and disconnect wiring from water pump (17).
h.
Remove clamp (18) and separate water pump (17) and outer casing (15).
Discard
preformed packing (16).
J-54 Change-1