5.1 Water Pump
DETROIT DIESEL 53
Wash all of the pump parts, except the bearing and
shaft assembly, in clean fuel oil and dry them with
A permanently sealed and
lubricated bearing is used in the
bearing and shaft assembly and should
not be washed. Wipe the bearing and
shaft assembly with a clean lintless
Examine the impeller for damage and excessive wear
on the impeller face which contacts the seal. Replace
the impeller if it is worn or damaged.
Discard the bearing if it has a general feeling of
roughness, is tight or has indications of damage.
Fig. 4. - Removing Shaft form Impeller with
1. Use installer J 1930 to apply pressure to the outer
Tools J 8329 and J 358-1
race of the bearing as shown in Fig. 5 and press the
shaft and bearing assembly into the pump body until the
body and the bearing outer race supported, install the
outer race of the bearing is flush with the outer face of
seal by applying pressure on the seal outer flange only,
until the flange contacts the body (Fig. 1). Wipe the
face of the seal with a chamois to remove all dirt and
The bearing will be
damaged if the bearing and shaft
assembly is installed by applying
3. Support the pulley end of the shaft on the bed of an
pressure on the end of the shaft.
arbor press and press the impeller on the shaft until the
impeller is flush with the large end of the body.
2. Lightly coat the outside diameter of the new seal
with sealing compound. Then, with the face of the
Fig. 5. Pressing Shaft Assembly into Water
Fig. 3. - Removing Pulley
1970 General Motors Corp.