Alamo HYDRO 15 - Manual (Page 113)

Section 7 - 3
HYDRO 15 (Service Manual) 09/06
© 2006 Alamo Industrial
Speed Increaser Service & Repair
To Tractor PTO
To Pump
Speed Increaser
Speed Increaser
Mount Plate
Mount Plate To
Tractor Bolts
Speed Increaser To
Mount Plate Bolts
Speed Increaser To
Mount Plate Bacers
Mount Plate To
Tractor Spacers
UP
Down
FIGURE 1 Generic Speed Increaser Mount To Tractor Illustration
8. Install the speed increaser to the mount plate using four 1/2" Gr5 bolts. There are 4 short spacers that are
used to mount between the speed increaser and the mount plate. The mount plate will have thread holes in ti
to screw these 4 bolts into, use lockwashers on these bolts. These 1/2 " Gr 5 bolts will torque 65 to 75 ft. lbs
using an X pattern in increments as being torqued.
9. Check to make certain the speed increaser has at least 2" of engagement on the PTO Shaft. If not the
spacers will have to cut to increase engagement of PTO shaft. Make certain the PTO shaft is not bottomed
out in speed increaser, if it is the spacers are to short.
10. Check the grease level in the speed changer before operating the tractor PTO. Use a recommended grade
of oil. A recommended grade is SAE 90W oil with E.P. Additive. Most speed increaser are installed where the
pump will mount above the PTO
(figure 1) but in some case it may require the pump be mounted below the
PTO shaft height. If this is the case the breather plug will need to be installed in a different location on one of
the side plugs. Normal fill level is the setscrew plug about 1/3 of the way up on the side of the housing. If Speed
increaser is turned to the bottom opposite what is shown in figure 1 the level plug will be the one that was on
the bottom before and would be just below the center line of the bearings
(figure 3)
11. Run the speed increaser on the unit prior to mounting the pump on the speed increaser. Make certain the
speed changer runs smoothly and is not binding in any areas. The bearings located around the PTO shaft
should be cool and free of any noise. If vibration or noise exist, shut tractor off. Loosen the mount plate bolts
to tractor slightly to allow speed increaser to seek its on center line, do the same with the four bolts mounting
the speed increaser to the mounting plate. Retighten bolts snugly and run PTO again to see if vibration and/or
noise has gone.. If no noise or vibration re torque the bolts as stated in
step 7 & 8 . Rerun PTO one more time
to check alignments.