20-02245 REV E
10
2.
Carefully remove the two seal screws in the end cap. If the unit is oil-
filled, allow the oil to drain out before continuing.
3.
Remove the stainless steel ring, which retains the end cap.
4.
Remove end cap, using a special end cap pulling tool, thread the two ¼-
20 bolts into the seal screw holes.
5.
Restrain the housing and output shaft and pull the end cap out of the
housing and off the shaft.
For replacement of the end cap, refer to the
END CAP REPLACEMENT
section of this
manual.
SEAL REPLACEMENT
Whenever the end caps are removed, the O-rings, quad seals, and Seelscrews should
be replaced.
1.
Remove the end cap as described above.
2.
Remove the old O-ring and quad seal.
3.
Clean O-ring and quad seal surfaces.
4.
Apply a small amount of silicone grease or other O-ring lubricant to the
new seals and install them in the grooves of the end cap. Avoid excessive
stretching of the O-ring.
5.
Using silicone grease or O-ring lubricant, completely fill the top retaining
ring groove. If this is not done, the sealing O-ring may be damaged when
the end cap is installed.
6.
Position the end cap assembly into the housing without pressing it in.
Push the end cap down until the O-ring is at the snap ring groove. Slowly
continue to press the end cap into the housing.
DO NOT
apply forces to
the end of the shaft. Install the snap ring and new Seelscrews.
If the unit is oil-filled and if the fluid is leaking near the compensator cover, the Bellofram
should be inspected and replaced if damaged.
Carefully inspect the Bellofram for any tears or nicks, particularly in the vicinity of the
sealing edge. Replace if damaged. Clean the sealing surfaces, apply a small amount
of O-ring lubricant to these surfaces and the sealing surfaces of the Bellofram. Replace
the Bellofram and compensator cover. Refill the unit with fluid, de-gas, and close.
