Goulds Pumps ANSI FAMILY IOM (ATEX Compliant) - Manual (Page 33)

APPENDIX VI
3198 Teflon ® Sleeve Field Replacement Procedure
The Model 3198 Teflon ® sleeve is field replaceable,
provided a controlled oven capable of heating the
sleeve to 550° F (228° C) and a method of machining
the sleeve after installation on the shaft are available.
l
! CAUTION
Do not heat the sleeve with an open flame.
Irreparable damage will occur to the sleeve.
For those users who do not have the above facilities,
shaft/sleeve sub-assemblies are available from ITT
Goulds.
1. Remove the old or damaged sleeve (126) from
the shaft (122). The sleeve may be cut
lengthwise with a sharp knife.
2. Thoroughly clean the shaft. Pay particular
attention to the knurled area of the shaft under the
sleeve.
NOTE: The replacement sleeve will not have
the same dimensions as the sleeve which was
removed until it is mounted on the shaft and
machined.
3. Heat the replacement sleeve in a controlled oven
at 550° F (288° C) for 40 minutes.
l
! CAUTION
Do not heat the sleeve with an open flame —
irreparable damage will occur to the sleeve.
s
! WARNING
The oven and sleeve are hot. Use insulated gloves
to prevent burn injuries.
4. Remove the sleeve from the oven.
5. Slide the sleeve onto the shaft immediately after
removing it from the oven. Push the sleeve onto
the shaft until the sleeve bottoms out on the
shoulder of the shaft (Fig. VI-1). The hook end of
the sleeve will extend beyond the knurled portion
of the shaft.
6. As the sleeve cools, it will shrink in length. Apply
light pressure to keep the sleeve against the shaft
shoulder. Maintain pressure until the hook
portion of the sleeve seats itself against the
shoulder under the hook (Fig. V-2).
l
! CAUTION
Care must be taken not to damage the end of
the sleeve.
7. Allow the shaft and sleeve to cool completely.
8. Machine the Teflon
®
sleeve to the dimensions
and finish shown in Table VI-1.
Table VI-1
3198 Teflon ®
Sleeve Diameter and Finish
Frame Sleeve OD Surface Finish
STX 1.375 / 1.373 16 μ in.
MTX 1.750 / 1.748 16
μ in.
9. Face off the sleeve shoulder even with and
parallel to the shaft shoulder (Fig. VI-4).
ANSIFAM IOM - 5/08
135
8
Fig. VI-1
Fig. VI-2
Fig. VI-3
Fig. VI-4