User's Manual

PAGE 16 MAINTENANCE (continued)
7. PUMP ASSEMBLY
CAUTION: READ THIS ENTIRE PROCEDURE BEFORE CONTINUING.
Following are step-by-step instructions for assembly of the pump and are essentially the reverse order of the
instructions for disassembly.
A. Thoroughly clean all parts to remove oil, grease and foreign material. Inspect for wear or damage and
replace if required. Remove all parts to a clean and dust-free location for assembly. Gaskets, grease
seals and bearings should not be reused and should always be replaced with new parts.
B. If the impeller wear rings (17) require replacement, they are a light press fit and will be secured by one
of the following methods. You should proceed as follows:
Rings Secured With Loctite: Apply a light film of Loctite No. 290 to the impeller part of the
impeller/wear ring fit and install the rings.
Rings Secured With Set Screws: Press the rings in place and drill and tap them using the same size
and number of setscrews as originally provided. The new holes should be 15
o
to 20
o
from the old
holes. Install and tighten the set screws.
CAUTION: BE CAREFUL NOT TO DRILL THROUGH THE IMPELLER AND BE SURE TO PRESS
THE WEAR RING COMPLETELY IN PLACE. THEY SHOULD BE FIRMLY BUTTED
AGAINST THE CORRESPONDING IMPELLER SHOULDER.
C. Install the impeller key (102) in the shaft (4) and slide the impeller (1) over the key, centering it between
the shaft shoulders as shown in Figure 5.
FIGURE 5
CAUTION: IF THE SHAFT SLEEVES ON YOUR PUMP ARE SECURED WITH LOCTITE ONLY,
REFER TO THE SHAFT SLEEVE INSTALLATION INSTRUCTIONS BEFORE
INSTALLING THE IMPELLER.
D. Install the shaft sleeves (A14 or B14), shaft sleeve nuts (213) and O-rings (452), if your pump uses
them, on the shaft. The shaft sleeves will be secured by one of three methods and you should proceed
as follows:
Sleeves Secured With Loctite And Sleeve Nuts: Apply two beads of Loctite No. 601 around the
shaft on the shaft/shaft sleeve fit, one approximately 2 inches from the impeller hub and the second at
the threaded end. Slide the shaft sleeves part way onto the shaft and rotate them at least one full
revolution to evenly spread the Loctite, then slide the sleeves over the shaft until they butt firmly against
the impeller hub. Install and tighten the shaft sleeve nuts (213) and the set screws (213A).