TK 56433-5-MM-EN
39
Fuel Filter/Water Separator
The fuel filter/water separator filters the fuel, and
removes water from the fuel and returns it to the fuel
tank.
Fuel Filter/Water Separator Replacement
Replace the fuel filter/water separator at intervals
according to the Maintenance Inspection Schedule.
1. Unscrew the fuel filter/water separator canister with
a strap wrench. Drain, and dispose of properly.
2. Clean the filter head seal surface.
3. Lubricate the canister seal with clean fuel.
4. Through one of the small openings in the top of the
canister, fill the new fuel filter/water separator
canister with clean fuel. This will purge the air from
the canister. Do not fill canister through the center
hole.
Figure 21.
Filling Fuel Filter/Water Separator
1.
Fill Through Small Openings
2.
Do Not Fill Through Center Hole
5. Screw the new canister on hand-tight. Using a strap
wrench, tighten another 1/4 turn.
Engine Speed Adjustments
When the diesel engine fails to maintain the correct
engine speed, check the following before adjusting the
speed:
1. Check the fuel pre-strainer and the inlet strainer.
Check the speed.
2. Bleed the air out of the fuel system. Check the
speed.
3. Bleed the air out of the nozzles. Check the speed.
Make the engine speed adjustments with the engine
fully warmed up.
High Speed
N
No
otte
e:: To achieve proper refrigeration system capacity
in High Speed engine operation, it is important
to ensure the engine high speed throttle is set
properly.
1. Shut the unit off.
2. Remove the ball socket from the throttle bracket
ball.
3. Energize the high speed solenoid by using the
Interface Board Test Mode to energize the high
speed solenoid while the engine is not running.
4. Adjust the ball socket on the end of the linkage rod
as necessary to make it align with the throttle
bracket ball with the throttle bracket held tight
against the high speed stop screw.
5. If alignment is not possible or there is a slight gap
between the high speed stop screw and throttle
bracket, de-energize the solenoid and shorten the
linkage by threading the ball socket in up to one
turn. Reassemble and energize the solenoid. Verify
that the throttle bracket is tight against the high
speed stop screw.
N
No
otte
e:: The engine speed will be well above 2200
RPM in light refrigeration load situations.
Figure 22.
Engine Speed Adjustments
1.
High Speed Solenoid
4.
Throttle Bracket Ball
2.
Linkage Rod
5.
Low Speed Adjustment
Screw
3.
High Speed Stop
Screw
6.
Ball Socket
Low Speed
1. Start the unit and use the Service Test Mode to run
the unit in Defrost. The engine should run in low
speed.
2. Go to the Gauges Menu, select Suction Pressure,
and lock it on the display.
3. Wait until the Suction Pressure rises to 40 psig (276
kPa) or higher.
4. Set the low speed to 1450 ± 25 rpm.
a. Loosen the jam nut on the low speed
adjustment screw (see Figure “Engine Speed
