To Disassemble/Assemble The Pump; To Do Maintenance On The Bearing - Husqvarna PW 450 Workshop Manual

Repair instructions
2.4 To disassemble/assemble the
pump
1. Remove the 3 hex screws.
2. Remove the pump.
3. Make sure that the oil level is as shown in the figure
below (80ml).
10 – English

2.4.1 To do maintenance on the bearing

1. Examine the bearing parts and make sure that they
are not damaged. It is important to remove all damaged
parts and debris from the parts:
2. Loosen the screw to remove the wobble disc.
3. Examine all parts, including the D-bearing, and make
sure that they are not damaged. Replace all damaged
parts.
4. Replace the oil (80 ml).
5. Clean the D-bearing in the motor with compressed air
or petrol. Make sure to remove all parts/dust from any
damaged parts. Make sure that no parts/dust is caught in
the D-bearing.
6. Examine the D-bearing after cleaning. Make sure that
it rotates smoothly, without any friction, when it rotates
slowly.
7. Clean all parts, both new and reused, before
assemby.
8. Assemble the parts of the bearing:
- Assemble the thin disc directly on the wobble disc
- Assemble the bearing disc
- Assemble the thick disc on top.
NOTE: The bearing disc can be installed with any side up.