TM 5-2420-230-24-2
B3.9 and B5.9 Series Engines
Air Intake Manifold Heater (010-072)
Section 10 - Air Intake System - Group 10
Page 10-59
6B Industrial Grid Heater
The air intake manifold heater is preferred starting aid option in production on all 185- and 200-hp ratings and optional
on all other water jacket aftercooled (WJAC) engines with Bosch in-line injection pumps. For engines not equipped
with the air intake manifold heater option, a spacer block will be installed instead of an intake heater.
The intake heater improves cold weather starting characteristics by heating the intake air during cranking. It can also
serve to reduce white smoke if it is engergized during cold ambient temperatures while the engine is at idle. The intake
heaters are available for both 12-VDC and 24-VDC systems, and both draw 195 amps while energized.
New hardware has been designed to support the grid heater installation. The engine will have the same overall
installation height. The grid heater also has a provision for an air compressor intake line.
Description
Part No.
Quantity
Grid Heater (12 VDC)
3928465
1
Grid Heater (24 VDC)
3928463
1
Spacer Block
3928464
1
Ground Wire
3928702
1
L-1183
