Waukesha Cherry-Burrell
Maintenance
11/2012
95-03057
Page 57
Single Mechanical Seal Installation
After the head insert and the body insert are installed, the
remaining components are installed as follows:
1.
Place wavy washer spring (See Figure 56, Item A) on shaft.
2.
Install seal back-up ring. (See Figure 56, Item B).
3.
Install U cup seal with opening toward product side, as shown
in Figure 56, Item C.
4.
Place seal body (See Figure 56, Item D) on shaft, aligning
slots with seal drive pins.
5.
Install "keeper" O-ring (See Figure 57, Item E) on shaft to
keep rotating parts assembled.
6.
Inspect seal to insure that it moves freely with spring and that
drive pins keep it stationary with respect to mutator shaft.
One-Piece and Double
Mechanical Seals
For detailed parts drawing breakdown, see “Double Mechanical
Seal” on page 70. Units furnished before 2005 had a removable
seal body insert as described below. In 2005, all single and
double mechanical seals were furnished with a one-piece primary
seal body. Starting in 2012, a new seal body design with a
removable wear face is furnished.
Primary/Secondary Seal Head Insert Removal and
Installation
The primary seal head insert located in the product head is
removed by tapping the back of the seal with a plastic block or
rod. It contains the secondary seal head insert and the two parts
can be removed as an assembly or separately, as the secondary
ring is held in the primary by an O-ring. Make sure to hold the
insert or use a soft cloth to catch it to prevent it from dropping
when removed.
NOTE:
To prevent damage to the seal face, do not place seal
face down on any surface during maintenance.
Figure 56 - Orientation of Seal
Components
Figure 57 - Install Keeper O-ring
Figure 58 - Seal Head Insert Removal
