TM 5-3805-280-24-2
Fuel System Operation and Tests
COLD START SWITCH OPERATIONAL
115
47
CHECK (ROTARY PUMPS)
The cold start switch (B) is an option available on rotary
injection pumps.
1. Disconnect cold start switch connector (A) from pump
wiring harness.
2. Remove cold start switch from thermostat
housing/water manifold.
3. Submerge switch in water at 60 C (140 F) for a few
A--Connector
minutes.
B--Cold Start Switch
4. Check for open or closed switch. On Lucas pumps, the
switch should be closed. On Stanadyne pumps, the
switch should be open.
5. Replace switch if defective.
6. Install switch in thermostat housing/water manifold and
tighten to specifications.
Cold Start Switch--Specification
Torque .............................................................. 5 Nm (3.5 lb-ft) (42 lb-in.)
7. Connect cold start switch connector to pump wiring
harness.
RG,115,JW7700 1924NOV971/1
13-574
