Wheatheart WHR 80/100 x 31-71ft Augers PTO-SD - Manual (Page 28)

3. A SSEMBLY WHEATHEART - GHR & WHR GRAIN AUGERS
3.10. S PROCKET H EAD G EARING PTO-SD D RIVE M ODEL
28 30641 R1
3.10. SPROCKET HEAD GEARING
Change the upper drive sprockets on the following augers:
To obtain the correct flighting speed on the following PTO-SD augers, the 14 and
25 tooth sprockets must be replaced:
• PTO-SD 8" diameter - all lengths up to and including 51’.
Note: Replacement sprockets are included in the PTO-SD shipping carton.
Replace both the upper (14 tooth) and lower (25 tooth) sprocket with 20 tooth
sprockets.
Note: If the PTO-SD augers discussed in this section are changed to a PTO-BD, EMD,
or MD drive, the 14 and 25 tooth sprockets should be reinstalled. This is
necessary to maintain the correct rpm of the flighting.
3.11. UPPER HOUSING LUBRICATION
Fill enclosed upper drive housing with grease.
For continuous use in extreme cold conditions, semi-fluid arctic grease or heavy
oil may be used.
3.12. TRUSS
See Figure 3.11, 3.12, 3.13, and 3.14.
1. Fasten lower truss anchor to bracket.
• use two 7/16” x 1" bolts and locknuts (see Figure 3.11, 3.12, and 3.13 for
location).
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2. Fasten the center truss support bracket on 46’ and 51’ augers with two

7/16” x 1" bolts and locknuts (Figure 3.12).
• The 56’ and 61’ augers require two center truss support brackets, each
fastened with two 7/16” x 1" bolts and locknuts.
• The 71’ auger requires a high truss support center bracket located
between the two standard support brackets. Fasten with two 7/16” x 1"
bolts and locknuts. See Figure 3.13 for correct placement.
3. Attach eyebolt to one end of truss cable with two 5/16” cable clamps. Insert
eyebolt into lower truss anchor and thread on nut a short way.
Important: On the 8” x 56’ augers, the truss cable must be threaded through the reach-arm
bracket as shown in Figure 3.11 and then attached to the eyebolts at the lower
truss anchor.
8” (26' - 51') 750 g 26 oz
8” (56' - 71') 900 g 32 oz
10” (all lengths) 1100 g 40 oz