Husqvarna PP440HF, Workshop Manual, Page: 114 / 165

114
10.3 REPAIR INSTRUCTIONS
1
3 4
2
5
Replace the Needle Bearing
First see: Disassemble the
Track Feed Slip Clutch (p.
113)
1� Heat the worm wheel with a hot
air gun to around 100 °C (200
°F)�
2� Place the worm wheel in a
workshop press�
3� Use a tool socket and press out
both needle bearings�
4� Mount the worm wheel’s needle
bearings using a workshop press�
Press in the first bearing in line
with the bearing housing
5� Press in the bearing on the
opposite side� The tool 523 05
76-01 fits ideally for pressing in
the bearing in line with the worm
wheel�