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HYDRO 15 (HY15)
TECHNICAL INFORMATION BULLETIN No. 060795
Alamo Industrial ™ Technical Services Department
1502 East Walnut
Seguin, Texas 78155
830-372-2708
Models: Hydro 15
Date:
Jun. 7, 1995
Bulletin No:
060795
(old # IB-695-3)
The HYDRO 15 Flex Wing mower is hydraulically - driven and hydraulically positioned machine. As
the operator, you have the most control as to how the machine operates. The operation and
performance of the machine is affected by the adjustment of the machine. Lets look at the many factures
affecting the operation of the Hydro 15.
1. The Tractor Draw Bar should be adjusted to a length of 14", measured from the end of the 540
RPM PTO Shaft of tractor to the center of the tongue hitch pin.
2. The Bolt and Locknut that are installed on the Hydro 15 are special material. The Clevis pulling
yoke will serve well if assembled properly. You, as the operator, have the duty of checking to see that
this bolt and nut are tight and in place. The Bolt will have six marks on top indicating a grade 8. The nut
should be pulled up tight and there should be spacer washers between the tow clevis and the draw bar,
these are to take up the space between the clevis and draw bar. The owners manual will have a drawing
showing this connection in section 5, page 11.
3. Check the sight glass on the oil tank of the Hydro 15. It is located on the front wall of the hydraulic
tank. Oil should be visible in the sight glass when the mower is level (sitting level). USE CAUTION; If
the oil is low, clean the oil cap and the area around it of any debris that might fall into the oil tank. Push
the relief valve to relieve any pressure from tank, the oil tank is a closed system and designed to retain
approximately 12 psi. Oil should be added by removing the spin-on the air breather (do not do this with
any pressure in tank) and remove the pressure relief from the top of the tank.
4. When adding oil to the system of the Hydro 15, keep grass, dirt, dust and other foreign matter
away from the filter tube and oil container. Replace the relief valve and spin-on breather after oil is added.
5. The Oil information is found in section 5, page 3. Oil type is listed there under Exxon (Nuto H-
100), Gulf (harmony 100 AW) and Shell (Tellus 100) or equal.
6. Check the Hydro 15 blades, bolts and blade bar for signs of wear or loosening. Section 5, page
5 of the manual has detailed information on this procedure.
7. Check the six bolts that hold each spindle to the Hydro 15 deck. This information may be found
in section 5, page 4.
8. Inspect the hydraulic system in general and spot any oil leaks that may be in the system. Tighten
any fittings that may have become loose. The fittings on the hydro 15 are a flair type and hold very well
but must not be over tightened.
9. The Hydro 15 will do an excellent mowing job if it is properly setup. To check the setup on the
Hydro 15, pull the mower (connected to the tractor) to a level (paved preferred) area and lower the wings
from the transport position. Set the mower (center and wings) down to the lowest position. Your Hy-
dro 15 manual has this information in section 4, pages 5 & 6.
Parts Book Error - Manual Dated Jan. 1993:
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