TK 61555-2-MM-EN
53
Figure 20.
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 (2.76 bar) or higher.
4. Set the low speed to 1250 ± 25 rpm.
a. Loosen the jam nut on the low speed adjustment screw (see Figure “Engine Speed
Adjustments” above).
b. Adjust the low speed adjustment screw to obtain the correct speed.
c. Tighten the jam nut and recheck the speed.
5. Exit the Service Test Mode.
Injection Pump Timing
Use this timing procedure when installing a new injection pump. It is not necessary to use this
timing procedure when removing and reinstalling the original injection pump. In that case, align
the index marks on the injection pump and the gear case as they were before removing the
injection pump.
1. Before removing the old injection pump, note the alignment of the index marks on the
injection pump and the gear case. The index mark on the injection pump is usually aligned
with the index mark on the gear case. If not, make a mark on gear case in line with the index
mark on the injection pump (see
).
