10 (15)
K 101/151/200/250/300.58.0404.Eng/Digital
SERVICE INSTRUCTION
K 101, 151, 200, 250, 300
Disassembling the Rotor and Ball Bearings
The rotor is mounted in the motor unit with an upper and two
lower bearings. Install the eyebolt (M16) into the drilled hole in the
shaft (Fig.7).
Carefully lift out the rotor with the upper bearing from the oil
housing. Bearings that have been in contact with water or are
damaged should
always
be replaced.
Fasten the rotor in a vice with soft jaws. Clean the shaft and
lubricate it. Place the withdrawing tool on the upper bearing and
make sure it pulls the inner ring. Remove the bearing.
If the lower bearings are on the shaft, pull them off with your
hands. Pick up the lower bearings if they are still in the oil
housing.
ASSEMBLING
Mounting
While mounting the motor unit, be extremely careful and make
sure everything is clean.
Clean all O-ring grooves and all other
contact surfaces carefully. Use a wire brush when necessary.
Lubricate all O-rings with oil or grease to prevent the O-rings
from getting stuck or damaged when remounting. Also, lubricate
all threads on the screws to facilitate disassembling when
servicing next time.
Mounting the Ball Bearings
Check that the shaft is straight and the key slot is not damaged.
Polish deep scratches and burrs off. Push the upper bearing into
place. If a press is not available, heat the bearing to 100-120°C
(212-248°F) in an oilbath.
Wipe off the shaft contact surfaces of the bearing and mount it.
Mount the lower bearings in the oil housing by using a pipe with
the same external diameter as the bearing external diameter in
order to keep the bearings in place in the oil housing when the
rotor is mounted (Fig. 8).
NB!
Do not Forget to Refill the Bearings with Grease.
Fig 7
Fig 8