Toro Sand Pro 5020 - Manual (Page 117)

6. Apply masking tape around splines or keyway on
coupling shaft (11) to prevent damage to seal.
IMPORTANT: The outer bearing (2) is not lubricated
by the system’s hydraulic fluid. Make sure it is thor-
oughly packed with Mobil Mobilith SHC
R 460
grease.
NOTE: Coupling shaft (11) should be approximately
0.10 inch (2.54 mm) below the housing wear plate sur-
face to allow the assembly of the thrust bearing (12). The
coupling shaft must rotate smoothly on the thrust bear-
ing (9) and thrust washer (8) (Fig. 76).
Figure 75
7. Make sure that a generous amount of clean corro-
sion resistant grease has been applied to the outer bear-
ing (2). Install the coupling shaft (11) into housing (3),
and seat shaft against the second thrust washer (8).
8. Install thrust bearing (12) onto the end of coupling
shaft (11).
9. Apply a small amount of clean petroleum jelly to a
new seal ring (5) and insert it into the housing (3) seal
ring groove.
NOTE: One or two alignment studs screwed finger tight
into housing (3) bolt holes, approximately 180 degrees
apart, will facilitate the assembly and alignment of com-
Figure 76
ponents as required in the following procedures. The
studs can be made by cutting off the heads of 3/8–24
UNF 2A bolts so they are 0.5 inch (12.7 mm) or longer
than cap screw (14).
NOTE: Use any alignment marks put on the coupling
shaft (11) and drive link (13) before disassembly to as-
semble the drive link splines in their original position in
the mating coupling shaft splines.
10. Install drive link (13) with the long splined end down
into the coupling shaft (11). Engage the drive link splines
so they mesh with the coupling shaft splines (Fig. 77).
11. Assemble wear plate (18) over the drive link (13)
and alignment studs onto the housing (3) (Fig. 78).
Figure 77
12. Apply a small amount of clean petroleum jelly to a
new seal ring (5) and assemble it into the seal ring
groove on the wear plate side of the stator (21).
Hydraulic Systems
Figure 78
Sand Pro 2020/3020/5020 Page 4 – 67 Hydraulic System (Rev. A)