Checking Pickup Slip Clutch Torque ( MEGATOOTH™ or Wide-466/466S)

NOTE: MEGATOOTH™ pickup shown throughout procedure, unless noted otherwise. Wide pickup (466/466S) is similar.

Wide Pickup (466/466S); A new clutch should slip at 195-239 N·m (144-176 lb-ft) when slipped at the gear case output hex shaft. As the clutch wears, it will gradually transmit less power due to slipping, and feeding performance may be unsatisfactory.

MEGATOOTH™ Pickup; A new clutch should slip at 234-287 N·m (173-211 lb-ft) when slipped at the gear case output hex shaft. As the clutch wears, it will gradually transmit less power due to slipping, and feeding performance may be unsatisfactory.

Wide Pickup (466/466S); If a used clutch slips below 136 N·m (100 lb-ft), replace outer housing and ratchets with springs or replace complete slip-clutch.

MEGATOOTH™ Pickup; If a used clutch slips below 203 N·m (150 lb-ft), replace outer housing and ratchets with springs or replace complete slip-clutch.

IMPORTANT: If slip clutch does not slip at 340 N·m (250 lb-ft), clutch is not working correctly. Replace slip clutch to avoid possible damage to pickup.

To check slip-clutch torque:

2. To reduce torque reading variations, tighten lower drive roll chain. (See ADJUSTING LOWER DRIVE ROLL CHAIN [466 AND 566] or ADJUSTING LOWER BELT AND CLEANING AUGER DRIVE ROLL CHAIN [466S] in this section.)

3. Raise pickup.

4. Disconnect PTO from tractor.

A-Right-Hand Shield
B-Shield
C-Cap

MEGATOOTH is a trademark of Deere & Company

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NOTE: Wide Pickup; If mounting hardware for cap (C) is not reinstalled, reel shaft will move rearward and chain will jump while slipping the clutch.

6. MEGATOOTH™ Pickup; Remove shield (B).

Wide Pickup (466/466S); Remove cap (C). Reinstall and tighten mounting hardware.

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CAUTION: Use at least a 1 in. drive breaker bar or weld a heavy 1-1/4 in. socket to a 10 x 76 x 914 mm bar to hold reel shaft in place. Smaller breaker bar or wrench will break or bend.

8. Install a tool on reel shaft to prevent the reel from rotating counterclockwise.

9. To avoid reel chain from jumping the sprocket while trying to slip the clutch:

• Tighten the reel chain.

• MEGATOOTH™ Pickup; Make sure idler arm pivots freely and is spring loaded.

• Wide Pickup (466/466S); Adjust the plastic idler. Shorten or replace chain as needed.

• Add alignment marks (or tape) on the clutch sprocket and on the hex shaft going through the clutch. These "marks" will determine whether the clutch slipped or the chain jumped during each slip test.

A-Quick-Lock Pin

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• Set click-type torque wrench at 195 N ·m (144 lb-ft). Install torque wrench (A), with extension, on hex output shaft at left-hand side of baler.

• Turn wrench clockwise. Wrench should click before clutch slips. Repeat procedure three times.

• Set torque wrench at 239 N·m (176 lb-ft). Turn wrench clockwise. Clutch should slip before wrench clicks. Repeat procedure three times.

11. If clutch slips at 136 N·m (100 lb-ft) or less, replace outer housing and ratchets with springs or replace complete clutch. (See your John Deere dealer.)

CAUTION: Never use any type of tool or wrench on shaft(s) while tractor engine is operating. Always remove tool(s) from shaft as soon as procedure is finished.

12. Remove torque wrench.

A-Torque Wrench

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NOTE: Install washer with hex bore toward quick-lock pin.

13. Remove tool from reel shaft. Install washers and quick-lock pin (A).

14. Install right-hand shields.

Wide pickup; Remove mounting hardware and install cap. Reinstall and tighten mounting hardware.

15. Unlock and close gate.

A-Quick-Lock Pin

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