Philips HR 7805 Service Manual

1997-08-29

HR 7805

DAP151

SERVICE INSTRUCTIONS
Replacing coupling mixing/kneading attachment of HR 7805 food processor

Due to a change in material, the coupling of the mixing/kneading attachment is now available as a service
part under code number 4822 528 11192.

Tools required for replacement of the coupling:

• crosshead screwdriver Pzd.1

• Torx screwdriver T10

• flat-end electrician’s screwdriver

• a saw or a pair of cutting nippers

• auxiliary tools (see below)

• pillar drilling machine (or lever press)

auxiliary tools:

• jig for gearbox unit

• plug-type assembly tool for coupling

– Material of gearbox unit jig:

* plate: synthetic resin bonded fabric (SRBF) or synthetic resin bonded paper (SRBP)
* pins: steel or brass

– Material of plug-type assembly tool:

* steel or brass

Note: Although the coupling could be assembled manually with help of the auxiliary tools, we advise use

of a drilling machine or press to ensure accurate placement and to avoid customer complaints
about noise due to misalignment of the coupling.

4822 729 21862 PCS 88 817

Disassembly and reassembly of the gearbox
housing and replacement of the coupling.

1. Loosen the screws by means of a crosshead
screwdriver Pzd. 1 and a Torx screwdriver T10.

2. Open the housing by detaching the separable snap
joints by means of a flat-ended electrician’s
screwdriver and lift the lower housing and the
gearbox unit out of the upper housing.

2

3. Loosen the two crosshead screws in the bottom of
the gearbox unit by means of a crosshead
screwdriver (Pzd.1) and take the gearbox unit with
defective coupling out of the lower housing.

1

3

4. Clamp the gearbox unit in a vice and use a saw or
a pair of cutting nippers to cut off part of the
defective coupling. Do not damage the shaft!