As Required

Checking Driveline Shields

causym CAUTION: To help prevent bodily injury or death from entanglement in rotating drivelines, replace any missing or damaged shielding. Never operate machine without shielding.

Check driveline shields by making sure they rotate freely. Lubricate or replace if necessary. (See your John Deere dealer.)


A-Driveline Shield

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Checking Hitch Pin Torque

1. Check hitch pin lock nuts (A) periodically to be sure they are tight.

2. Tighten to specifications.

Specification

Hitch Pin Lock Nut -Torque 590 N·m (435 lb-ft)


A-Lock Nuts

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Adjusting Slip Clutch

IMPORTANT: Rotary cutter slip clutches have a tendency to seize up if left idle for some time. Proceed as follows to slip the clutch before using.

Perform the following steps using the tractor that will operate cutter.

1. Remove two quick lock pins (B) and raise PTO shield (A).


A-PTO Shield
B-Quick Lock Pins

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NOTE: Driveline removed for illustration purposes. MX5/MX6 clutch shown. MX7 is similar.

2. Loosen lock nuts (D) progressively leaving some tension on belleville spring (C).

3. To aid in determining slippage, scribe/mark a line across clutch hub and plates.

causym CAUTION: Help prevent personal injury to bystanders from thrown objects. Be sure no one is near the cutter when adjusting.

4. Start tractor and engage PTO intermittently at low rpm, slipping the clutch four or five times.

5. Stop tractor engine and remove key.

IMPORTANT: To avoid driveline damage, DO NOT overtighten cap screws and lock nuts. A gap must be left between clutch plate (B) and belleville spring (C).

6. Tighten cap screws and lock nuts (D) leaving a gap (A) between clutch plate (B) and spring (C) according to specifications.

Specification

MX5 and MX6 Clutch Plate-to-Spring -Gap 4 mm (0.157 in.)
MX7 Clutch Plate-to-Spring -Gap 5.7 mm (0.224 in.)

causym CAUTION: To help prevent bodily injury or death from entanglement in rotating drivelines, replace all shielding removed and replace any missing or damaged shielding. Never operate machine without shielding.

7. Close and fasten PTO shield.

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A-Gap
B-Clutch Plate
C-Belleville Spring
D-Cap Screw and Lock Nut
MX5/MX6-(6 used)
MX7-(8 used)

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