Section
140 • 180
Page 513
Dated
October 2011
elements sometimes stick in the
wrong position if left partially
assembled for some time. Make
sure a rotating element can be
moved axially on the shaft before
closing up the pump, and then
make the final adjustments as
soon as possible.
3. Seat broken during assembly
— Ceramic seats are particularly
vulnerable to damage. Carefully
follow reassembly instructions
for seals. Seals on flex-coupled
units can be damaged by
excessive hammering when
installing the coupling onto the
shaft extension.
4. Pitted shaft under the seal —
Reusing a shaft or sleeve when
repairing a pump is the probable
cause of this problem. The seal
rotating element can produce
a pitted surface underneath
its elastomer portion during
normal use. This is normally
not a problem for the first seal
assembly since the elastomer is
conforming as this action occurs.
A new seal can leak before it
conforms if the pits are large
enough. If any pits are visible to
the unaided eye, shaft or sleeve
replacement is advised.
140 • 180 SERIES
6.
Parts and Repair Services
A.
Parts
B.
Repair Service
C.
Warranty Service
D.
Motors, Mechanical Seals,
and Accessories
6A Parts
Repair parts may be obtained
through your local Authorized MTH
Pumps Representative or Distributor
who can be found in the yellow pages
or by contacting MTH Pumps at:
401 W. Main St. • Plano, IL 60545
Phone: 630-552-4115
Fax: 630-552-3688
6B Repair Services
Repair service for an MTH pump
should be obtained from the company
through which it was purchased.
In the event this is not possible, the
name and phone number of a nearby
MTH representative or distributor
may be obtained by contacting
MTH Pumps. In the event that it
is necessary to return the pump to
the factory for repairs, remove all
accessories attached to the pump.
We cannot accept responsibility for
their safe removal, storage, and
return.
6C Warranty Service
All requests for warranty claims
should be made through the
company from which the pump was
purchased or supplied. Complete
details on what is wrong with the
pump must be provided along with
information on the system in which it
is installed. Refer to the MTH Pumps
Limited Warranty statement. Return
authorization must be obtained prior
to returning any equipment.
6D Motors, Mechanical Seals, and
Accessories
Repair or replacement service on
motors, mechanical seals, relief
valves, or other accessories should
be obtained from the manufacturer
of these components. MTH does not
carry replacement parts and is not
authorized to render repair service
on these components. Replacement
mechanical seals are stocked at
MTH and are always available
insofar as possible for immediate
shipment. Warranty service, as well
as expert application information
can be obtained from your local seal
manufacturer’s sales office.
