SECTION TSM 410.2 ISSUE D PAGE 6 OF 10
7. Loosen setscrews. Two for G, H and HL size pumps, four
for all other sizes. With spanner wrench, remove both
end caps and lip seals. Remove ball bearing and spacer
collars. Refer to Figure 6.
8. Examine seal chamber lip seal and remove if it shows
wear or damage. Lip seal must be removed if bracket
bushing needs to be replaced.
9. Clean all parts thoroughly and examine for wear or
damage. Check lip seals, ball bearing, bushing and
idler pin and replace if necessary. It is often possible to
reuse the idler pin rather than replace it. Note position of
the worn area at least 0.33 turn from previous position.
Check all other parts for nicks, burrs, excessive wear
and replace if necessary.
Wash bearings in clean solvent. Blow out bearings with
compressed air. Do not allow bearings to spin; turn them
slowly by hand. Spinning bearings will damage race
and balls. Make sure bearings are clean, then lubricate
with non-detergent SAE 30-weight oil and check for
roughness. Roughness can be determined by turning
outer race by hand. If bearings have roughness, replace
bearings.
10. Casing can be checked for wear or damage while
mounted on bracket.
11. Check flush line to be sure it is open. A long wire may be
used to do this. Clean or replace if it is clogged.
GREASE FITTING LOCATION
NYLON INSERT
INNER END CAP
HALF ROUND RINGS
INNER SPACER COLLAR
INNER LIP SEAL
BALL BEARING
BRACKET
OUTER LIP SEAL
OUTER SPACER COLLAR
LOCKNUT
LOCKWASHER
OUTER END CAP
SETSCREWS
FIGURE 6
The seal used in this pump is simple to install and good
performance will result if care is taken during installation. Seal
faces are made from silicon carbide which is extremely hard
and brittle. Do not drop these parts or otherwise mishandle
as the faces can chip easily.
The principle of the mechanical seal is contact between the
rotary and stationary members. These parts are lapped to
a high finish and their sealing effectiveness depends on
complete contact.
ASSEMBLY
Mechanical Seal –
(Silicon Carbide with Viton Elastomer)
(10 pages)
(10 pages)
(9 pages)
(11 pages)
(11 pages)
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