TM 5-2420-230-24-2
Cold Start Timing Advance System (KSB) Temperature Switch (005-069)
B3.9 and B5.9 Series Engines
Page 5-98
Section 5 - Fuel System - Group 05
Install (005-060-026)
10 mm, 19mm
Install the high-pressure relief valve assembly.
Cold Start Timing Advance System
(KSB) Temperature Switch (005-069)
Remove (005-069-002)
27 mm
Remove the temperature switch.
CAUTION
The switches are not interchangeable. White smoke
will be present if the wrong temperature switch is used.
Notes:
1. The wax motor KSB (used on pre-'91 engines) uses a
71C [160F] normally open coolant temperature
switch, Cummins Part No. 3915945.
2. The electrical solenoid-style KSB (used on '91 models
and newer) uses a 32C [90F] normally closed intake
manifold temperature switch, Cummins Part No.
3921642.
27 mm
Remove the temperature switch from the intake manifold.
L-958