General Pump 72 Series Gearbox - Manual (Page 10)

GENERAL PUMP
A member of the Interpump Group
Gearbox-71 & 72 Series
Page 10
8. DISMANTLING THE REDUCTION GEAR UNIT
Remove the gear housing lid screws. Place 3 M8 grub screws or threaded screws (which will serve the function of
extractors) into the holes and tighten (Fig. 20, position 1) and at the same time strike on the pinion so that the bearing
remains attached to it during removal of the lid (Fig. 21).
Using standard tools, remove the gear housing lid and take the bearing out of the pinion (Fig. 22). Remove the crown
screws and washer and extract out the crown. If necessary, use a percussion extractor on the two M8 holes (Fig. 23)
or a standard extraction tool (Fig. 23).
Remove the pinion using a percussion extractor on the M12 hole (Fig 24). Loosen the gear housing screws and remove
the housing screws and remove the housing (Fig. 25).
Ref 300761 Rev.B
12-11