Kohler TP 4.0 D — Remove Impeller
Repair & overhaul
For the Kohler TP 4.0 D, from the Kohler service manual.
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Before you start
- Impeller is heavy.
Procedure
- Using a rubber mallet, hit impeller to loosen.
- Turn impeller counter-clockwise by hand until free from crankshaft; be ready to catch impeller.
- Inspect impeller for cracks and bent blades.
- Measure distance between shaft shoulder and rotating seal; clearance is 19.1/19.5 mm (0.7520/0.7677 in.).
- Thread impeller back on shaft; measure back plate to impeller outer surface; clearance is 86.0/86.4 mm (3.3858/3.4016 in.).
Tools required
- rubber mallet Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Shaft shoulder to rotating seal: 19.1/19.5 mm (0.7520/0.7677 in.)
- Back plate to outer surface of impeller: 86.0/86.4 mm (3.3858/3.4016 in.)
Source: Kohler service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.