Finish Thompson TBS - Manual (Page 8)

6
Reassembly
1. Insert the shaft assembly up through the bottom of the tube until it sticks out the top of the pump head.
2. Warm up the seal assembly (item 4) prior to installation by using a heat lamp or socking them in hot water.
This will aid in the ease of proper seal installation. Make sure there are no metal burrs on the pump shaft in
the bearing hole location or the coupling half setscrew location that could “cut” the seal during installation.
3. Lubricate the end of the shaft with Vaseline to aid in the seal installation. Carefully install the seal down
over the shaft with the two “slots” facing up toward the bearing assembly. The raised lip in the center of the
seal (that faces the bottom of the pump) must go on straight and not buckle on one side.
4. After the seal is on the shaft correctly, install the bearing assembly (item 3) onto the shaft. Use the bearing
assembly to push the seal further down the shaft until the hole in the center of the bearing assembly matches
up to the hole in the shaft. Install the roll pin through the bearing assembly and shaft.
5. Line up the bearing assembly with the top of the pump head and press the bearing in. Use a block of wood
and a mallet if needed.
6. Install the coupling half and tighten the setscrew into the dimple in the shaft. Spin the coupling to insure
there is no binding.
Note: Repair instructions can be downloaded from our web site at www.finishthompson.com or contact Technical Service at
1-800-888-3743.