John Deere

OMGX10782

Issue H0

Sabre Lawn Tractors

1438GS, 1438HS, 1542HS,

PIN (020001 -)

1742GS, 1742HS and 2046HV

PIN (010001 -)

Introduction

Product Identification

Safety

Operating

Replacement Parts

Service Intervals

Service Lubrication

Service Engine

Service Steering and Brakes

Adjusting Brakes (Gear)

Adjusting Brakes (Automatic Hand Control)

Adjusting Brakes (Automatic Foot Control)

Service Mower

Service Electrical

Service Miscellaneous

Troubleshooting

Storage

Assembly

Specifications

Warranty

John Deere Quality Statement

Service Record

All Manuals Close Window

Service Steering and Brakes


Adjusting Brakes (Gear)

c CAUTION: Avoid injury! Rotating blades are dangerous. Stop engine, remove key, wait for all moving parts to stop before servicing machine.

1. Park machine safely. (See Parking Safely in the Safety Section.)

2. Check if:


BRKGEAR

Brake disc (A) is contacting the case (B),

AND/OR

Brake lever (C) is contacting its mounting bracket (D), top or bottom.

If so, REPLACE friction pucks and brake disc BEFORE making adjustment. (See you Authorized Service Center.)

3. Block the front and rear wheels, and release the parking brake.


BRAKEADJ

4. From the rear of the tractor, locate the brake disc (E), lock nut (F), and friction puck (G).

5. Insert a 0.25 mm (0.010 in.) shim gauge (H) between the disc and friction puck. The shim should slide with slight interference.

IF THE SHIM WILL NOT FIT:

Loosen lock nut (F) until the shim slides in. Tighten the lock nut until the shim has slight interference.

Remove the shim and cycle the brake pedal. Readjust if needed.

IF THE SHIM SLIDES FREELY:

Install the shim and tighten lock nut (F) until there is slight interference.

Remove the shim and cycle the brake pedal. Readjust if needed.

Adjusting Brakes (Automatic Hand Control)

c CAUTION: Avoid injury! Rotating blades are dangerous. Stop engine, remove key, wait for all moving parts to stop before servicing machine.

1. Park machine safely. (See Parking Safely in the Safety Section.)

2. Unlock the park brake and release brake pedal.


M96445 SPRING

3. Measure distance from inside of brake rod stop tabs (A) to outside of compression spring bracket (B) (located below foot tread area on left-hand side of transmission). Distance (C) should be 2 - 10 mm (0.08 - 0.40 in).


BRKSPRG

4. If distance is less than or equal to 2 mm (0.08 in):

Gradually adjust jam nuts (D) until specified measurement is obtained.

Depress brake pedal and LOCK park brake.

Measure the distance between edge of compression spring bracket and front edge of brake rod stop tabs. Gap should have a minimum distance of 2 mm (0.08 in).

Check brake rod compression spring (E). It should not be completely compressed when park brake is locked. A slight air gap should be visible between the coils when proper adjustment is reached.

Recycle park brake a few times and measure distances each time until specified measurements are obtained.

Brake lever (F) travel should not exceed 30 (G). If it does, measure brake components individually.

SPECIFICATIONS:

Spring bracket to stop tabs (minimum): 2 mm (0.08 in)

Brake lever travel (maximum): 30

Adjusting Brakes (Automatic Foot Control)

c CAUTION: Avoid injury! Rotating blades are dangerous. Stop engine, remove key, wait for all moving parts to stop before servicing machine.

1. Park machine safely. (See Parking Safely in the Safety Section.)


M96445 FOOTCONTR

2. Measure distance of the compressed brake spring from bracket (A) to washer (B) (located below foot tread area on left-hand side of transmission). Distance (C) should be 42-43 mm (1.65 - 1.69 in).

If distance (C) is greater than 43 mm (1.69 in) or less than 42 mm (1.65 in), gradually adjust nut (D) until specified measurement is achieved.