Alamo HYDRO 15 - Manual (Page 55)

Section 3 - 17
HYDRO 15 (Service Manual) 09/06
© 2006 Alamo Industrial
Figure 25
Gear Housing
Gear Bore
Gasket Seal
Thrust Plate
Gear Side
(Smooth
Side)
Channel Seal Side
(Grooved Side - Back Side
Not Shown)
Inlet
Opening
Relief Groove
(Both Sides)
Dowel Pin Holes
Outlet
Opening
Thrust Plate CAUTION! : (Figure 25)
Important information - read before assembly:
1.
Thrust Plates must not have , scratches or excessive worn places on either side of plate.
2. Thrust plates must be installed correctly, The thrust plate has two surfaces, one surface has
a groove for channel seals and the other surface is smooth with two relief grooves (notch) in it.
3. Thrust plate smooth surface with relief notches will always face the gears, the groove side for
the channel seal side (smooth with groove side will always face the gear bearing journal bushings
never the gears as the gear would destroy the channel seal.
4. The relief grooves will face the both sides of the gear housing on the motor as both relief grooves
are the same and will not make any difference which goes to which side.
5. Thrust plates are very important to the way they are installed. If they are installed wrong, the pump
will not function properly and other components could be damaged if operated with them wrong.
Pump Assembly CAUTION! :
Important information - read before assembly:
1.
All sections have been cleaned and inspected, take extreme care not to allow the marring or
damage to machined surfaces to occur. Make certain all components are laid out so as not to
damage the machined surfaces.
2. Make certain any replacement parts have been compared to the old parts to make certain they
are correct.
3. Gears are closely matched, there fore they must be kept together as sets when removed from
the pump. Handle gears with care to avoid damage to journals or teeth. Avoid touching gear journals.
DO NOT mix new and old gears when reassembling pump.
4. Never hammer bushing into bores: always use an arbor press, Hammering will damage
bushings and possibly the bores in the housing.
5. (NOTE illustrations shown here are for a single pump, the tandem pump is longer with more
sections, the disassembly will be basically the same with the exception tandem pump has two
pump section instead of one. See figure 9 & 10 for reference to components)
.
MOTOR SERVICE & REPAIR