General Pump 72 Series Gearbox - Manual (Page 9)

Page 9
GENERAL PUMP
A member of the Interpump Group
Gearbox-71 & 72 Series
Mount the bearing onto the pinion, pushing it as far as possible into the housing socket using a striking hammer
(Fig. 15). Bearings and crown can be cold-inserted (Fig. 15). The operation can be facilitated by heating the parts in
question to a temperature of between 250 o - 300 o F (120 o - 150 o C), ensuring that the ring nuts are fitted snugly into their
housings. Fix the o-rings into the appropriate slots in the reduction gear unit (Fig. 16).
Place the cover over the pinion bearing using two M8 screws or grub screws to keep it in position during assembly
(Fig. 17, position 1). Abut the cover with the housing using a buffer and pressing directly on the former. Alternatively, use
tool par number F27517400 (Fig. 18). The operation can be made easier by tightening several screws at once
(Fig. 17, position 2).
Affix the gear unit housing lid with 10 M8 x 50 screws and tighten with a torque wrench (Fig. 19), as shown in section 10.
When the complete gear reduction unit has
been installed, check that the pinion is
turning correctly.
Ref 300761 Rev.B
12-11