Finish Thompson HVDP SERIES - Manual (Page 8)

8
Figure 6
SECTION 6: HELPFUL HINTS FOR CLEANING THE PUMP
 After flushing the internal components of the pump, be sure to lubricate the rotor.
SECTION 4: ROTOR REMOVAL, INSPECTION, AND INSTALLATION
REMOVAL:
1. Remove the motor (see section 1 and follow the instructions for your model).
2. Remove the drive assembly (see section 3).
3. The rotor is located at the bottom of the drive assembly (see Figure 4).
4. Using 3/4” and 5/8” open-end wrenches, loosen and remove the rotor.
INSPECTION: Inspect the rotor for excessive wear and deep grooving. Contact FTI if
you are questioning the condition of the rotor.
INSTALLATION: Reverse the removal instructions found in this section.
Figure 4
SECTION 5: SEAL REMOVAL, INSPECTION, AND INSTALLATION
REMOVAL:
1. Remove the motor (see section 1 and follow the instructions for your model).
2. Remove stator (see section 2).
3. Remove the drive assembly (see section 3).
4. The seal is located at the interface between the gearbox and the drive shaft (see Figure
6).
5. Secure the pump drive coupling using a pair of pliers.
6. Using a 3/4” open-end wrench, separate the drive shaft from the gearbox.
7. Being sure to protect the polished seal-seating area of the shaft, gently remove the
rotating seal boot, spring, and spring retainer.
8. Using a thin bladed screwdriver, remove the stationary component of the seal from
the gearbox assembly.
INSPECTION: Inspect the seal for wear and scratching.
INSTALLATION:
1. Lubricate the outside diameter of the stationary seal with a compatible lubricant and carefully install it into the gearbox housing.
2. Install the spring and spring retainer onto the pump shaft.
3. Lubricate the inside of the rotating seal boot with a chemically compatible lubricant and install it onto the pump shaft.
4. Reverse steps five through one of the seal removal instructions found in this section.