LT3-00032-2-A - DDKS Industries, hydraulic components distributor

ASSEMBLY PROCEDURE
SEAL ASSEMBLY
SEAL ASSEMBLY
See figure 7.
NOTE: 24 series only - to replace shaft seal only:
Remove unit for disassembly.
Some units require removing an adapter housing and external pump.
Follow steps removing the internal auxiliary pump and seal plate see figure 10.
Remove retaining ring (8), figure 4.
Remove shaft seal. Follow seal assembly in reverse order.
Assemble new shaft seal per instructions below.
After seal is replaced re-install retaining ring (8), figure 4 and reassemble auxiliary
pump and unit per assembly instructions.
CAUTION: Failure to follow these instructions may result in pump failure.
Procedure for installation of Mechanical Shaft Seals
Use only clean hydraulic fluid from the test stand or system to lubricate the seal. The
fluid must be compatible with the type of seals being installed. Ensure that your hands
are clean at all times when installing seals.
Install the shaft into the unit per procedure.
Assure that the seal faces of the stator and carbon ring remain clean throughout the
installation. These parts have highly polished finishes which must be maintained to
seal properly.
Lubricate the seal ring on the outside of the seal stator (ceramic) and install into seal
retainer. Inspect the back of the retainer to assure that the seal ring and stator are
installed completely and squarely into the retainer and the stator is not tipped. Care
must be taken to assure that the stator is not damaged. Avoid any impact on this
piece.
Install o-rings into grooves on the seal retainer as required.
Lubricate the shaft in the seal area, the ID of the Rubber boot, the face of the stator
and the face of the carbon ring. Without touching the face of the carbon seat, slip
the assembled spring and rubber boot onto the shaft until the spring retainer bottoms
out. Align the seal retainer and mounting flange bolt holes and push this assembly
down with the seal stator face against the carbon face until the seal retainer is in the
mounting flange pilot, taking care to keep the parts as even as possible. Secure (Do
not use impact tool) with 4 screws and torque to required specification.
Allow the unit to sit for a minimum of one hour before running to allow time for the
seal friction ring to adhere to the shaft.
FIGURE 7
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