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AEC/Appllcatlon Engineering
10. Using a .010 to .015 inch
head gasket, install the head
and idler assembly on the
pump. The pump head and
casing were marked before
disassembly to insure proper
reassembly. If not, make sure
that the idler pin, which is
offset in pump head, is
positioned toward and equal
distance between port
connections to allow for
proper flow of heat transfer
fluid through the pump.
SPRING
TAPERED INSTALLATION
SLEEVE
COAT ROTOR SHAFT. TAPERED INSTALLATION SLEEVE
ANO INNER DIAMETER OF MECHANICAL SEAL WITH
NON-DETERGENT SAE 30 WEIGHT OIL BEFORE ASSEMBLY.
If the pump is equipped with a jacketed head plate, install it at this time; install a new
gasket when installing the head plate.
Tighten head capscrews evenly.
Remove the tapered installation sleeve from the shaft.
11. Slide the inner spacer collar over the shaft with the recessed end facing the rotor .
ARY
BER
Place the pair of half round rings on the shaft, and slide the inner bearing spacer collar over
the half round rings to lock them in place.
Note: HL pump models have bearing spacer collars that are not recessed, and do not contain
half round rings.
12. With the lip facing the end of shaft, press the lip
seal
into the inner end cap. Insert the end
cap through the shaft end of the bracket. As you look at the shaft end, turn the end cap
clockwise until it engages the threads. The end cap spanner wrench holes must be facing
the rotor.
Turn the end cap with a spanner wrench until it projects slightly from the opening on the
side of the bracket. The end cap must not be turned so far that the lip seal drops off the end
of the spacer collar on the shaft or that the end cap becomes disengaged from the threads.
If this happens, remove the inner spacer collar, half round rings, and the end cap. Begin
again at Step 11.
13. Pack the ball bearing with NLGI #2 multi-purpose grease. Place the ball bearing on the
shaft and push or gently drive it into place in the bracket.
14. With the lip facing the end of the shaft, press the lip seal into the outer end cap. Insert the
end cap into the bracket. Turn the end cap in the bracket until it is tight against the bearing .
TOH True Temp"" Serles Hot Oil Temperature Control Units
Page 51
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