Thermo King Super II SR+, Manual

Page: 103 / 145

Refrigeration Service Operations (Rev 6/98)
93
3. Oil the gasket, install it on the housing, and place the
shims in the end cap (use same number as removed).
Tighten the end cap in place with the vent hole closest
to the outlet opening of the valve housing.
4. Install the piston, spring and tighten the castle nut until
it is firmly seated against the bottom of the piston.
5. Back off the castle nut, one full turn only.
6. Insert the cotter pin.
7. Oil the gasket and install the end cap.
8. The throttling valve will have to be recalibrated on
operating unit. (Refer to the Specification chapter for
setting.)
9. Adjust by adding or removing shims under the spring.
1. Tighten the Castle Nut to the Bottom—
Then Back Off 1 Turn Only—
Insert the Cotter Pin
Installation
1. Install the throttling valve using a new O-ring soaked in
compressor oil. Bolt the throttling valve to the com-
pressor.
2. Install the suction valve and the line from the com-
pound gauge.
3. Pressurize the low side and check for leaks. If no leaks
are found, evacuate the low side.
4. Open the refrigeration valves and place the unit in oper-
ation.
MODULATION VALVE
Removal
1. Pump down the low side and equalize pressure to
slightly positive.
2. Remove the grille, both idler pulleys, the fan belt, and
the fan module.
3. Remove the clamps from the suction line assembly.
4. Disconnect the modulation valve wire harness connec-
tor and remove the modulation valve coil.
5. Disconnect the Thermax-V expansion valve line from
the suction line assembly.
6. Note the position of the feeler bulbs on the side of the
suction line. Remove the expansion valve feeler bulbs
from the suction tube.
7. Unsolder the suction line assembly at the evaporator
coil end.
8. Unsolder the suction line assembly from the heat
exchanger.
9. Remove the suction line assembly from the evaporator
housing.