TM 5-2420-230-24-2
Cold Start Timing Advance System (KSB) Pump Mounted (005-070)
B3.9 and B5.9 Series Engines
Page 5-102
Section 5 - Fuel System - Group 05
Cold Start Timing Advance System (KSB)
Electrical Solenoid Style
The electrical solenoid-style KSB is used on 1991 model
and newer B Series automotive engine ratings using the
Bosch VE fuel pump.
NOTE: The wax motor-style KSB is used on pre-1991 B
series automotive engine ratings using the Bosch VE fuel
pump. Refer to Procedure 005-070, Cold Start Timing Ad-
vance System (KSB) - Wax Motor Style, for additional
information.
Wax Motor-Style KSB
NOTE: The temperature switch is located in the coolant
jacket.
Electrical Solenoid-Style KSB
NOTE: The temperature switch is located in the intake
manifold.
Two types of electrical solenoid-style KSB valves are avail-
able.
The first type is the pump-mounted KSB, as shown.
L-962