Thermo King SLXi Spectrum, Maintenance Manual

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Engine Maintenance 9-22
12. Check the voltage on the 2A or 2B circuit at terminal 30 in the fuel solenoid relay socket.
a. If battery voltage is not present on the 2A or 2B circuit, check circuit 2A or 2B for an open or a short.
b.If battery voltage is present on circuit 2A or 2B, go to step 14.
13. Test the relay.
a. Use a jumper to connect the 85 terminal on the relay to terminal 2 at the fuse link.
b.Use another jumper to connect the 86 terminal on the relay to a CH circuit.
c. If the relay does not energise, it is defective. Replace the relay.
d.If the fuel solenoid does energise, the timer is defective. Replace the fuel solenoid timer PC board on a TK 482, TK 486 or
TK 486V engine.
14. Turn the unit OFF.
Fuel Solenoid Replacement
1. Disconnect the fuel solenoid wire connector and remove the old fuel solenoid.
2. Connect the main harness connector to the new fuel solenoid.
3. Adjust the following unit switches if they are provided on your unit:
• Place the Diesel-Electric switch in the DIESEL position.
• Place the Cycle-Sentry switch in the CONTINUOUS RUN position.
• Place On-Off switch(es) in the ON position to energise the fuel solenoid.
NOTE: The fuel solenoid must be energised when it is being installed. If it is not, the plunger and the linkage may not line up
correctly. Then the fuel solenoid will not function properly.
4. Place the O-ring in the groove in the end of the fuel injection pump. Make sure that the O-ring is positioned correctly during
installation to avoid damage and leaks.
5. Install the new fuel solenoid.
6. Turn the unit OFF.
INJECTION PUMP SERVICE AND TIMING
Injection Pump Installation & Timing
1. Remove the rocker arm cover and rotate the engine in the direction of rotation, clockwise from the front. Rotate the engine
until both push rods on the No. 1 cylinder are loose and the injection timing mark on the flywheel lines up with the pointer in
the bell housing.
An alternative method is to remove both access covers from the timing gear cover. Then rotate the engine in the direction of
rotation until the “O” on the cam gear lines up with the pointer in the cam gear access hole. The injection timing mark should
now line up with the pointer in the bell housing.
NOTE: The injection timing mark is a line scribed in the flywheel approximately 35 mm from the TC mark. The injection
timing mark has no identification markings.
The engine now has the No. 1 cylinder at the fuel injection mark of its compression stroke.
2. Before installing the pump, rotate the gear until the “O” marked on the gear is approximately in the 10 o’clock position as
you face the gear end of the pump.
3. Remove the access cover from the timing gear cover.
4. Install the pump in the engine, lining up the “O” with the timing mark cast into the access hole
5. Install and torque the injection pump mounting bolts.
6. Remove the 8 mm bolt located at the back of the injection pump in the middle of the injection lines. Install the special dial
indicator, (P/N: see Electronic Parts catalogue) in its place. Make sure the adapter bottoms out tightly on the pump housing.
Insert the dial indicator into the adapter until the dial indicator contacts the pump plunger. Preload the dial indicator at least
2.0 mm and lock the dial indicator in place by tightening the locking collar.
7. Rotate the engine backwards, counter clockwise from the front, to approximately 89 mm from the TC mark on the flywheel.
8. Adjust the dial indicator to zero. The pump plunger should be at the bottom of its stroke. To check this, rotate the engine back
and forth no more than 13 mm. The dial indicator should stay at zero.