User`s guide

User’s Guide ______________________________________________________________________
148 __________________________________________________________________M210662EN-A
Replacing Bearings of WAV252
Replacement of the bearings should be done only by a trained
technician. First steps from 1 to 14 are for disassembling and second
steps from 1 to 11 are for reassembling. The numbers in parenthesis
refer to Figure 111 on page 143. To replace the ball bearings of
WAV252, follow the procedure below:
1. Loosen the set screw (with an Allen key) and carefully remove the
vane assembly.
2. Loosen the hex nut of the green MIL-connector at the bottom of the
sensor body with a 22-mm tool.
3. Loosen the three capnuts (1) at the bottom of the sensor body with
a 7-mm tool.
4. Remove the body cover and the O-rings (2).
5. Release the connector (3) of two white wires from the power
supply board (4).
The following numbers refer to Figure 112 on page 147:
1 = Vane assembly
2 = Hex nut of the connector
3 = M6 x 16 DIN7991 (3 pcs)
4 = Lower body
5 = Spacer (3 pcs)
6 = Printed circuit board (PCB)
7 = Code disc
8 = External retaining ring, body
9 = Spacer ring
10 = Internal retaining ring, shaft
11 = Ball bearings
12 = Shaft and Upper body assembly
13 = Ball bearings
14 = O-rings, 2 pcs
CAUTION
Be careful not to bend the connector pins.