DETROIT DIESEL 53
5.1 Water Pump
the ceramic insert should be visible to the assembler.
Clamp the ceramic insert and impeller together with a
3/8" bolt and nut and two smooth 1/8" thick
washers. Tighten the bolt to 10 lb-ft torque.
CAUTION: Do not mar the polished surface of
the ceramic insert.
4. Place the impeller assembly in a level position, with
the ceramic insert up, in an oven preheated to 350F.
and bake it for one hour.
NOTE: The face of the ceramic insert must be
square with the axis of the tapered bore within
.004". The pump shaft may be used as a
mandrel for inspection.
Fig. 7- Comparison of Water Pumps
5. Remove the impeller from the oven and, after it has
cooled to room temperature, install it in the pump. Do
common solvent such as alcohol. Wipe clean with a
not loosen the clamping bolt until the assembly cools.
dry cloth.
Make sure the mating surfaces of the water seal and
the ceramic insert are free of dirt, metal particles and
3. Place the adhesive washer in the impeller bond area
with the ceramic insert on top. The polished face of
oil film.
Fig. 8 - Details of Water Pump with Ceramic Seal
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