Goulds Pumps 3420 - IOM User Manual

Page 73

SHAFT SLEEVES

The shaft sleeve (126) surface in the stuffing box area must
be smooth and free of grooves. If grooved, replace the
sleeve. The O-ring groove must be in good condition.
Check the diametrical clearance between the sleeve and the
stuffing box bushing. See Figure 54. The original
clearance is shown in Table 8. If the clearance has
increased more than .030 in. (.762 mm). The shaft sleeve
and/or the stuffing box bushing should be replaced.

BEARING HOUSINGS

Visually inspect the interior of the housings (134, 134A,
134D, or 166) for damage, cracks, corrosion, scale, or
debris. Remove all loose and foreign materials. Make sure
all lubrication passages are clear. Inspect the bearing bores
according to the tolerances in Table 10. Replace the
housings if they are out of tolerance.

BEARINGS

Ball and roller bearings (112, 168, 409 and 410) should be
inspected for contamination and damage. The condition of
the bearings will provide useful information on operating
conditions in the bearing housing. Lubricant condition and
residue should be noted. Oil analysis is often helpful in
diagnosing conditions and/or problems. Bearing damage
should be investigated to determine the cause. If the cause
is not normal wear, it should be corrected before the pump
is returned to service. It is not recommended that
anti-friction bearings be reused after they have been
disassembled and inspected.

3420 IOM 8/09

Fig. 54