John Deere

OMM137705

Issue C9

Snowblower

for 4200, 4300, 4400 and 790 Compact Utility Tractors 59-Inch

Serial No. (070001 - )

Introduction

Safety Signs

Preparing Vehicle

Installing

Removing

Operating Machine

Service Machine Safely

Service

Service Snowblower Safely

Grease

Gear Oil

Service Intervals

Service Record

Lubricate Discharge Chute

Lubricate Discharge Chute Cable Pulleys

Lubricating Gearbox Driveshaft

Lubricate Front Driveshaft

Lubricate Mid-PTO Driveshaft

Lubricate Auger Shaft

Check Auger Gearbox Oil level

Checking Snowblower Gearbox Oil Level

Replacing Shear Bolts

Replacing Discharge Chute Cables

Routing Chute Cables

Installing Cable Shield

Reversing or Replacing Scraper Blade

Reversing Or Replacing Wear Plate

Troubleshooting

Storing Attachments

Assembly

Specifications

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Service


Service Snowblower Safely

c CAUTION: Avoid injury! DO NOT work on snowblower while it is being operated or running.

1. STOP tractor.

2. Put PTO lever in OFF position.

3. STOP engine.

4. Lower snowblower to the ground.

5. Lock tractor park brake.

6. Remove key.

7. Wait until auger and blower have stopped before you service snowblower.

8. Keep snowblower clean.

Grease

Use grease based on the expected air temperature range during the service interval.

The following greases are preferred:

ˇ John Deere Moly High Temperature EP Grease.

ˇ John Deere High Temperature EP Grease.

ˇ John Deere GREASE-GARD.

Other greases may be used are:

ˇ SAE Multipurpose EP Grease with 3 to 5 percent molybdenum disulfide.

ˇ SAE Multipurpose EP Grease.

ˇ Greases meeting Military Specification MIL-G-10924C may be used as arctic grease.


TS1417

Gear Oil


MIF

Use oil viscosity based on the expected air temperature range during the period between oil changes.

John Deere GL-5 (80w-90) Gear Lubricant is recommended.

Other oils may be used if they meet one or more of the following:

ˇ API Service Classification GL-5.

ˇ Military Specification MIL-L-2105D.

ˇ Military Specification MIL-L-2105C.

ˇ Military Specification MIL-L-2105B.

Service Intervals

Before Each Use

Lubricate Discharge Chute

25 Hours

Check gearbox oil level.

Lubricate front driveshaft U-joints

Lubricate front driveshaft inner shaft.

Lubricate mid-PTO driveshaft U-joints.

Lubricate mid-PTO inner telescoping tube.

Lubricate auger shaft (2 places)

Gearbox Driveshaft


Service Record

Date

Service Performed


Lubricate Discharge Chute


M93917

Grease under chute (A) before each use.

Lubricate Discharge Chute Cable Pulleys


M93916

Place a light amount of grease on each pulley (A).

Lubricating Gearbox Driveshaft

IMPORTANT: Avoid damage! Do not over lubricate or you may damage seal.


1. STOP engine.

2. Lower snowblower.

3. Lock park brake.


M95852

4. Lubricate point (A) with one or two shots of John Deere Moly High Temperature EP Grease or an equivalent.

Lubricate Front Driveshaft

Lubricate U-Joints


M43196

ˇ Lubricate each U-joints (A) with one or two shots of John Deere Moly High Temperature EP grease or an equivalent.

Lubricate Inner Shaft

ˇ Fully compress driveshaft.


M94619

ˇ Lubricate inner shaft at location (B) with John Deere Moly High Temperature EP grease or an equivalent.

ˇ Extend and compress driveshaft several times to distribute grease.

Lubricate Mid-PTO Driveshaft

Lubricate U-Joints


M94621 M94620

Picture Note: driveshaft removed for clarity

ˇ Lubricate each U-joints (A) with John Deere Moly High Temperature EP grease or an equivalent.

Lubricate Inner Telescoping Tube

ˇ Separate driveshaft telescoping members.


M94622

ˇ Lubricate inner telescoping tube (B) with John Deere Moly High Temperature EP grease or an equivalent.

Lubricate Auger Shaft


M95917

Lubricate points (A) with John Deere Moly High Temperature EP Grease or an equivalent until it comes out at auger shaft ends (B) near gearbox.

Check Auger Gearbox Oil level

1. Park tractor on a level surface.

2. Stop snowblower and engine.

3. Lower snowblower to the ground.

4. Lock park brake.


M95851a

5. Remove check plug (A).

6. Oil should be level with check plug hole.

IMPORTANT: Avoid damage! Vent in fill plug (B) must be open or pressure will build in gearbox and cause gearbox to leak. Clean fill plug with solvent, if necessary.


7. If oil is low, remove fill plug (B).

8. Add gear oil specified in this section. Add until oil begins to come out check plug hole.

9. Install and tighten fill plug and check plug.

Checking Snowblower Gearbox Oil Level

1. Park tractor on level surface.

2. STOP snowblower and engine.

3. Lower snowblower to the ground.

4. Lock park brake.


M95849

5. Remove check plug (A).

6. Use bent wire to check oil level in gearbox. Oil should be 19 mm (3/4 in.) below hole (A).

7. If oil is low, add oil through check plug hole.

8. Install and tighten check plug.

Replacing Shear Bolts

1. If you hit a solid object, STOP snowblower immediately.

2. STOP engine.

3. Lower snowblower.

4. Lock park brake.

NOTE: A shear bolt (A) is installed in each end of auger. The shear bolts will break when snowblower hits a solid object. This protects the drive system from damage.


M95854

5. Remove broken shear bolt (A).

6. Find and correct cause for shearing.

IMPORTANT: Avoid damage! Replacement shear bolts MUST BE the same as the original shear bolts on your snowblower. When you install new shear bolt, line up both couplings (B) in same position.



M95850

7. Install new shear bolts. Use one of the new shear bolts (C) stored in rear housing.

Replacing Discharge Chute Cables

1. Start engine.

2. Turn chute 100° to the left using SCV lever. Hydraulic cylinder should be completely retracted.

3. Stop engine. Lower snowblower. Lock park brake.


M95847

4. Remove two nuts, washers, and cable shield (A).

5. Loosen two cap screws.

6. Disconnect cable from chute (B).

7. Remove nut (D), bolt and washers (C).


M31572

8. Remove cable ends (F) and (E) from pulleys. Remove cable assembly.

9. Install new cable so longer cable end (F) is to the left and shorter cable end (E) is to the right.

10. Install bolt and washers (C) in cable assembly eyelet.

11. Install and tighten nut (D).

Routing Chute Cables


M93915

1. Move chute so tab (A) on chute is in line with edge of cap screw (B). Chute opening will be to the left.


M93914

2. Route left cable:

ˇ Around top left pulley.

ˇ Around top center pulley.

ˇ Around bottom left pulley.

ˇ Around chute.

ˇ Under tab.

ˇ Behind washer (clockwise).

3. Use locking pliers to pull cable tight.


M93917

4. Tighten cap screw (C).


M93916

5. Route right cable:.

ˇ Around top right pulley.

ˇ Around bottom center pulley.

ˇ Around bottom right pulley.

ˇ In front of chute.

ˇ Under tab.

ˇ Behind washer (clockwise).

6. Use locking pliers to pull cable tight.

7. Tighten cap screw (D).

Installing Cable Shield


M95846

1. Make sure two flat washers are on cable shield bolts.


M95847

2. Install cable shield, two washers, and nuts.

3. Tighten nuts.

Reversing or Replacing Scraper Blade

NOTE: Reverse the blade when one edge of blade (A) becomes worn, rough, or bent. If both edges of blade are worn, rough, or bent, replace blade.


M95918

1. Safely raise snowblower. Put blocks under auger housing (B) to prevent snowblower from falling.

2. Remove nuts (C), and bolts.

3. Remove blade.

4. Flip blade so rear edge of blade is at front.

5. Install blade. Install bolts and tighten nuts.

Reversing Or Replacing Wear Plate

IMPORTANT: Avoid damage! A maximum of two wear plates can be mounted on the on side of the shell. Contact with auger may occur. For better wear plate wear, mount additional wear plates on the outside of shell housing.



M95919

When edge of plate (A) becomes worn, rough, or bent, reverse the plate. If both edges are worn, rough or bent, replace the plate:

ˇ Raise snowblower. Put blocks under the auger housing to prevent snowblower from falling.

ˇ STOP engine. Lower snowblower. Lock park brake.

ˇ Remove two nuts (B) and bolts. Remove plate.

ˇ Rotate wear plate.

ˇ Install plate with square end to rear of snowblower. Install bolts and nuts and tighten.

ˇ START engine and raise snowblower. Remove blocks. Lower snowblower.