TM 5-2420-230-24-2
B3.9 and B5.9 Series Engines
Cold Start Timing Advance System (KSB) Pump Mounted (005-070)
Section 5 - Fuel System - Group 05
Page 5-103
The second type is a remote-mounted KSB, as shown.
The remote-mounted KSB is used on the B Series automov-
tive engines that have an air compressor.
Both the four- and six-cylinder have the temperature switch
mounted in the intake manifold as shown.
Pump-Mounted Wax Motor-Style KSB
1. KSB (one control line).
2. Wiring Harness
Cummins Part No. 3918364 (4B)
Cummins Part No. 3918431 (6B).
3. 71C [160F] Temperature Switch, Cummins Part No.
3915945
Resistance Check (005-070-038)
Wax-Motor Style
The wiring harness used on the wax motor-style KSB can
be inspected using a multimeter.
NOTE: Pin C of the metro-pack connector is blank on the
wax motor-style KSB wiring harness.
L-963