11
27. Install second stage pinion gear (11) on shaft (6). Pinion gear (11) should slide freely on shaft (6) and key (13). If
not, ensure key (13) is properly installed and shaft (6) and pinion (11) keyway are free of burrs. Ensure pinion
(11) is installed in stage from which it was removed and is facing direction from which it was removed.
CAUTION
ATTENTION
If gears are installed in wrong housing, pump may not perform properly or may seize
during operation. This is because gears are matched to each housing individually and
may not have correct clearances if installed in another housing. If gears are installed
facing wrong direction, pump may not perform properly or may seize during operation.
This is because some gears have chamfers on only one side. These chamfers must be
positioned facing inside of housing so that there will be no interference with housing radii.
28. Install ring gear (12) in second stage gear housing (3). Ensure ring gear (12) is installed in stage from which it was
removed and is facing direction from which it was removed.
CAUTION
ATTENTION
If gears are installed in wrong housing, pump may not perform properly or may seize
during operation. This is because gears are matched to each housing individually and
may not have correct clearances if installed in another housing. If gears are installed
facing wrong direction, pump may not perform properly or may seize during operation.
This is because some gears have chamfers on only one side. These chamfers must be
positioned facing inside of housing so that there will be no interference with housing radii.
29. Install O-ring (41) on second stage gear housing (3).
30. Install dowel pin (37) on back face of previous stage.
31. Install second stage gear housing (3), with installed ring gear (12), onto shaft (6). Ensure dowel pin (37)
engages dowel pin hole in back face of previous stage and pinion gear (11) installed on shaft (6) is properly
positioned to enter gear housing (3).
32. Repeat steps 24 through 31 for third and fourth stage gear housings (3), if applicable.
33. Install last stage square gear housing (4) key (13), chamfer side up, into keyway of shaft (6).
NOTE:
If key (13) has a step, install key (13) with step facing up and away from back face of previous stage.
CAUTION
ATTENTION
When key (13) is installed and pushed up toward drive end, there must be a .020" gap between
it and back face of previous stage. If not, be sure previous stage housing (3) is seated
completely up into third stage housing tube (8). If key (13) is still up against back of previous
stage housing face (3) it should be removed and a small step filed in the portion of the key (13)
that sticks above shaft keyway, to prevent key (13) from touching back face of previous stage.
34. Install square housing pinion gear (11) on shaft (6). Pinion gear (11) should slide freely on shaft (6) and key (13).
If not, ensure key (13) is properly installed and shaft (6) and pinion (11) keyway are free of burrs. Ensure pinion
(11) is installed in stage from which it was removed and is facing direction from which it was removed.
CAUTION
ATTENTION
If gears are installed in wrong housing, pump may not perform properly or may seize during
operation. This is because gears are matched to each housing individually and may not have
correct clearances if installed in another housing. If gears are installed facing wrong direction,
pump may not perform properly or may seize during operation. This is because some gears
have chamfers on only one side. These chamfers must be positioned facing inside of housing
so that there will be no interference with housing radii.
35. Install ring gear (12) in last stage square gear housing (4). Ensure ring gear (12) is installed in stage from which
it was removed and is facing direction from which it was removed.
