Disassembly - Finish Thompson EF Series Operations & Parts Manual

DISASSEMBLY & REASSEMBLY INSTRUCTIONS

Disassembly

1. Cover, Impeller, & Diffuser Removal - Unthread the diffuser cover (item 19). Turn
it clockwise (left-hand thread). See Figure 1. Unthread the impeller (item 18) turning
it counter clockwise (right hand thread) using a flat-head screwdriver or hand while
holding the coupling insert and coupling (items 1 & 2) with the other hand. See Figure
2. Note: If the shaft unthreads from the coupling, use a pliers to hold the top of the
shaft. Care should be taken to not damage the shaft threads. For longer 40" and 48"
pump lengths, two people may be required to hold the shaft and unthread the impel-
ler. Unthread the diffuser (item 17) turning it clockwise (left-hand thread).
2. Shaft Removal - To remove the shaft (item 4), tap the bottom of the shaft on a piece
of wood or plastic and push the shaft up and out of the head (item 6). Grab the half
coupling or bearing and pull the shaft assembly straight out of the head. Note: Take
care to not bend the shaft. Important - The shaft should only be removed if the bear-
ing is frozen and needs to be replaced.
3. Intake Tube Removal - For EFP & EFV Models - Remove the intake tube (item 16).
Hold the head (item 6) in one hand and with the other hand, turn the intake tube
clockwise (left-hand thread). When completely unthreaded, pull the intake tube away
from the head exposing the inner tube and center support (items 13 & 14).
4. Inner Tube & Center Support Removal - To remove the inner tube and center sup-
port, turn the inner tube to unseat the o-rings (item 12) and then pull the inner tube
away from the head.
5. Shaft Sleeve Removal - The shaft sleeve (item 15) will drop out of the inner tube by
holding it in a vertical position and turning.
6. Center Support Removal - 40" and 48" lengths only - If the center support (item 14)
needs to be replaced, it can be removed by spreading open the fingers and disengag-
ing it from the inner tube. See figure 3.
7. Inner Tube & Shaft Sleeve Removal - The intake tube and head for EFS models are
welded together. To remove the inner tube and shaft sleeve (items 13 & 15 indicated
on the Exploded View on pg. 8-9), hold the outer tube and head assembly in a verti-
cal position, and the shaft sleeve will fall out. To remove the inner tube, "pretend" to
hit the bottom of the pump on the floor but stop before it actually hits. This motion
will allow the weight of the inner tube to release the o-rings, and it will drop out of
the bottom of the pump. It is recommended to do this over a soft surface to prevent
damaging the inner tube as it drops out of the pump.
8. Seal Removal - To remove the seal (item 5) from the head (item 6 or item 16 for
EFS), use a hook tool, available at most hardware stores, to pull the seal out from the
top of the head. Take care not to damage the seal seat area. See figure 4. Note: The
seal should be replaced if worn or the bearing is failing or frozen.
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Figure 1
Figure 2
Figure 3
Figure 4