Alamo HYDRO 15 - Manual (Page 114)

HYDRO 15 (Service Manual) 09/06
© 2006 Alamo Industrial
Section 7 - 4
Speed Increaser Service & Repair
12. The pump mounts to the speed increaser with a four bolt flange. There is a splined adapter required to
mate pump shaft splines to the internal splines of the speed increaser shaft (figure 2). There have been two
types, Old Style & new Style. Either style will work or can be replaced with the other, but at least one style
has to be installed complete. Always make a note of which type is used when removing pump from speed
increaser. Sometimes the splined adapter will stay in the speed increaser and sometime it will slide out with
the pump shaft. When installing the spline adapter make certain to put a good coat of grease on the splined
adater and on the internal splines before inserting it into the speed increaser.
Make certain at least one of
these styles is used to mount the pump.
"A" Old Style Splined adapter: See figure 1 drawing "A" . The old style splined adapter has a snap
ring groove on the OD of it and a snap ring, This splined adapter pushes into the speed increaser before
the pump is bolted on, the snap ring prevents the splined adapter from sliding inward and outward inside
speed increaser is in operation.
DO NOT use without the snap ring on splined adapter, failure will occur
(figure 2).
"B" New Style Splined Adapter: See figure 1 drawing "B" . The new style splined adapter WILL NOT
have a snap ring groove and WILL NOT use a snap ring to keep adapter stationary during operation. The
new style used a tube type spacer that is slid into the speed increaser splined adapter is inserted. This
tube spacer will keep the splined adapter from sliding.
DO NOT use without the tube spacer installed,
failure will occur (figure 2).
Splined Spacer Without Snap
Ring Groove and Tube Spacer
New Style
Splined Spacer With Snap
Ring Groove and Snap Ring
Old Style
FIGURE 2
"A"
"B"