Retsch BB 51 - Replacing Jaws

Replacing jaws
The following tools are needed:
• Allan key AF 2,5
• Allan key AF4
• Allan key AF5
• Open jawed spanner AF8
• Philips head screwdriver size 2
Fig.12
• Pull out the mains plug.
• Remove the cheesehead screw Sch1 on the feed hopper using an Allan key AF4.
• Remove the feed hopper.
• Set the gap width to maximum by turning the handwheel anti-clockwise to the stop.
• Remove the screws S1 at the side using an Allan key AF4 and take off the top of the casing.
• Take care with the earth cable!
• Using a size 2 Philips head screwdriver, remove the four oval head screws Sch2 and remove the two cover plates.
• Using an open jawed spanner AF 8, remove the eight hexagonal cap screws Sch3
• Remove the two hexagonal cap screws Sch4 using an Allan key AF 2.5 and take out the plate.
• Pull the traverses upwards and out.
• Remove the four cheesehead screws Sch5 using an Allan key AF5. During assembling the tightening torque must not
exceed 10 Nm.
• Remove the shim K1.
• Change the jaws B1.
Follow the same procedure in reverse to reassemble.
!
Operation of the BB 51 with the feed hopper removed
is not permissible.
Risk of crushing fingers and hands!
17.12.1998 © Retsch GmbH 18 Doc. No. GB 98.056.9999