Part no
Issue no
Series no
Date
Page
8940173703
01
C
09/2015
8/12
CP3850
SERVICE
MANUAL
Shaft unit
Di smantling the shaft unit
1. Remove the safety screw using the provided allen key and
locking the output shaft with the stop finger
2. Unscrew the front flange using the provided pin spanner and
locking the output shaft with the stop finger, then remove the
grinding wheel
3. Tighten the front flange of 2 turns on the shaft and remove the
autobalancer taking the tool in the hand slam and taping with a
mallet on the end of the shaft and on the front flange
4. Clamp the head/housing of the tool in a vice. Ensure the stop
finger is not clamped
5. Unscrew the 3 screws CHc M5x12 and remove the washers and
the guard
6. Unscrew the ring screw (R/H thread)
7. Remove the tool from the vice
8. Using a mallet, tap on the housing to slide out the shaft unit
9. Unscrew the nut (R/H thread)
10. Using an extractor, remove the bevel gear and the deflector
11. Using an extractor, remove the bearing
Reassembling the shaft unit
1. Position the new bearing onto the spindle and press it into
position
2. Press the parallel key
3. Place the deflector onto the new bevel gear
4. Position the bevel gear onto the output shaft
5. Apply a drop of LOCTITE 243 on the first thread of the shaft and
tighten the nut (R/H thread 25 Nm)
6. Apply the recommended quantity of grease, réf. 6159901480 (19
ml), onto the shaft bevel gear
7. Clamp horizontally the head/housing of the tool in a vice. Ensure
the stop finger is not clamped
8. Slide the output shaft into the housing and fit it into the needle
bearing taping carefully with a mallet. Check the output for free
rotation
9. Apply a drop of LOCTITE 243 on the first ring screw thread (R/H
thread 45 Nm)
10. Place the guard onto the housing and tighten the 3 screws CHc
M5x12 (R/H thread 5 Nm) with there washer
11. Place the autobalancer on the output shaft
12. Place a new grinding wheel and screw on the front flange with
the provided pin spanner
13. Tighten the safety screw with the provided Allen key
14. Test the tool to make sure it works properly
Bearing
Nut
Bevel gear
Déflector
Output spindle
Parallel key
25 Nm
LOCTITE 243
