Table of Contents
Advertisement
7.1 Gear housing
7.1.1 To do a check of the gear housing and gears
•
Do a check of the gear housing for cracks and other
damage. Use abrasive paper to remove sharp edges
and scratches from the O-ring seat.
•
Do a check of the ball bearings in the gear housing
for damage. Do a check for water in the gear oil
caused by damaged ball bearings.
•
Do a check of the bearing seats for the pinion shaft,
the gear shaft and the drill spindle shaft for damage
and deformation.
•
Do a check of the drill spindle shaft and the shaft
sleeves for damage and deformation. Do a check for
blue color from too high temperatures. Use abrasive
paper to remove scratches and corrosion.
a) The illustration shows the wear areas of the drill
spindle. The drill spindle shaft must be replaced
if the diameter is smaller than 21.80 mm at the
wear area of the shaft seal (A).
1332 - 001 - 04.03.2021
7 Function test
b) The shaft sleeves must be replaced if the
diameter of the groove is smaller than 27.85 mm
at the wear area (B).
•
Do a check of the pinion shaft for damage and
deformation. Do a check for blue color from too high
temperatures. Use abrasive paper to remove
scratches and corrosion.
•
Do a check of the gear wheels for broken teeth,
surface damage and deformation.
•
Do a check of the brake discs for surface damage
and deformation.
•
Replace damaged parts.
7.1.2 To do a check of the covers and the motor
housing
1. Examine the top cover for damage.
2. Examine the middle cover and the motor housing for
damage. Measure and make sure that the bearing
seats are circular. If deviations are more than ± 0.1
mm, replace the parts.
7.2 Rotor
7.2.1 To do a check of the rotor
1. Examine the rotor fan (A) for damage. Replace the
rotor if the rotor fan is damaged.
B
A
2. Examine the rotor shaft (B) for damage. Too low
level of gear oil can cause a loss of surface
hardness. Heat overload can cause a blue color on
the rotor shaft. Replace the rotor if the rotor shaft is
damaged.
B
A
E
C
D
Function test - 31
F
Advertisement
Table of Contents
