How to replace the mechanical seals!

Date:2014-12-01 1. Disassemble pump cavity to expose defective seal. Remove of old seal and assembly of new seal requires careful operations and precautions.
 
CAUTION Lapped and polished faces of new seal are easily scratched and damaged. PROTECT FROM DAMAGE, DIRT and FINGER PRINTS.
 
2. Carefully remove old seal head and seat taking care not to scratch shaft or seat counterbore. NOTE HOW OLD SEAL IS ASSEMBLED, TO BE SURE REPLACEMENT SEAL IS INSTALLED IN IDENTICAL MANNER.
 
3. Clean shaft and counterbore surfaces using fine emery cloth or equivalent. Remove rust, burrs, and wipe clean.
 
4. Shaft, seat counterbore and rubber members of seal head and seat should be lubricated with a lubricant compatible with the seal elastomers. TDS SEALUBE is recommended & commercially available. TDS SEALUBE is a WATER BASED formula specially designed to lubricate rubber making the installation of mechanical seals fast and easy. It provides a high degree of lubricity to all rubber components. It maintains its wetness for a short period of time allowing for easy installation of mechanical seal. NEVER use PTFE or SILICONE bases lubricants.
 
5. Check seal surfaces to be sure they are free of any dirt, grit or lubricants. Use an alcohol prep pad to clean the faces before final assembly.
 
6. Press seal seat firmly into counterbore to be sure it is bottomed square. SLIDE SEAL HEAD ALONG SHAFT MAKING SURE THAT SPRING IS CORRECTILY ENGAGED INTO SEAL.
 
7. Re-assemble pump and remember that trouble free operation of a pump includes making a correct seal installation.

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