Frame Mounted, Single-Disk Fertilizer Opener Maintenance

A57664-UN-17MAR06

A57663-UN-17MAR06

A - Shear Bolt

B - Adjusting Arm

C - Snap Ring

D - Wheel and Shaft

E - Set Screw, 2 used

F - Nut

G - Bearing and Blade Assembly

1. If there is any play in the disk bearing, remove shear bolt (A), adjusting arm (B) and snap ring (C).

2. Remove wheel and shaft (D).

3. Loosen set screws (E) and remove nut (F).

4. Remove bearing and blade assembly (G). Clean and repack bearings with John Deere TY6341 multipurpose SD polyurea or equivalent SAE multipurpose grease.

5. NOTE: During assembly, tighten nut (F) until 2 N·m to 5 N·m (17 lb.-in. to 44 lb.-in.) of torque is required to rotate the bearing and blade assembly (G). This drag assures positive sealing. Tighten set screw (E) when adjustment is complete. These bearings are packed with grease at the factory. After the first 10 hours inspect the bearing and adjust, if necessary.

   Install opener and tighten nut (F), while spinning disk, until the proper bearing preload is achieved.

6. Tighten set screws (E) to specification.

   Item	Measurement	Specification
   Bearing and Blade Reassembly
   Hub Rotation Preload	Torque	2 N·m to 5 N·m (17 lb-in. to 44 lb.-in.)
   Set Screws (E)	Torque	9.6 N·m (85 lb.-in.)

7. Lubricate surface of gauge wheel axle to prevent rusting and to keep depth adjustment working properly.

8. Install wheel and shaft, snap ring, arm, and shear bolt.

Every 100 hours, inspect and adjust the bearing, if necessary. Every 200 hours, or before each planting season, disassemble the bearing, clean, and repack it as outlined. Do not use chassis lubricant in bearings.