Maintenance; In Case Of Leakage; Replacement Parts; Accessories - SKF HMV Série Mode D'emploi

3. Maintenance

When the nut is not in use, it should be protected against rust, and the hose connection
holes should be plugged to prevent entry of dirt.

3.1 In case of leakage

If oil leaves the hydraulic nut when the piston
is operated, this generally means the seal
is torn or damaged and must be replaced.
To do this, the piston has to be pressed
out of the ring. To facilitate this operation,
three auxiliary holes with closure nipples are
provided in the full face of the ring. Using
the threaded pins supplied with the nut, the
piston can be pushed out of the ring (fig. 15).
The O-rings are then removed, the grooves
cleaned, and the new O-rings put in position.
If necessary, grease can be used to keep the
new O-rings in the correct position during
the replacement operation.
A spare set of O-rings is also supplied with
the nut. Additional replacement rings can be
obtained from SKF.

3.2 Replacement parts

Description
O-rings
Ball plug
Quick connection nipple
Maintenance set
(threaded pins, copper rings,
hexagonal keys)

3.3 Accessories

Description
Mounting fluid (5 litres)
Dial indicators
SKF HMV / HMVC
Figure 15. Pushing the piston out of the ring
Designation
Nut designation followed by /233983,
for example HMV 10/233983
233950
729832 A
HMVM 10/29 (nut size 10...29)
HMVM 30/69 (nut size 30...69)
HMVM 70/200 (nut size 70...200)
Designation
LHMF 300/5
TMCD 5P (parallel dial, 0-5 mm)
TMCD 10R (right angle dial, 0-10 mm)
TMCD 1/2R (right angle dial, 0 - / in)
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