Ransomes 62800, 62801, 62802, 62803, 62804, 62805, 62825, 62826 User manual

5

4271491-Rev B 5-1

Chapter 5

Chassis

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Check and Adjustment Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Repair Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

Component Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

Checks and Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

Steering Chain Tension Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

Reel Lift Actuators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

Right and Left Lift Arms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-6

Center Lift Arm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

Steering Yoke (2WD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10

Steering Yoke (3WD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12

Steering Chain and Gears . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14

Front Fenders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15

Traction Pedal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15

Brake Pedal Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16

Axle Shield and Front Splash Shield . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18

Floorboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19

Front Wheel Hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20

Front Axle Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21

5-2 4271491-Rev B

CHASSIS

5

Specifications

Check and Adjustment Specifications

Repair Specifications

Specification

Steering Chain Deflection in. (mm) 0.063–0.250 (1.6–6.4)

[with 2–10 lb (9–45 N)

push at mid-span of chain]

Specification

Front Wheel Hub Castle Nut Torque lb-ft (N·m) 95–115 (10.7–13.0)

Front Axle Assembly—

Mounting Screw Torque

lb-ft (N·m) 65 (88)

Front Axle Assembly—

Axle Housing Face-to-Axle Shaft Seal Outer Face

Measurement

in. (mm) 1.125 (28.6)

Front Axle Assembly—

Bearing Cap Screw Torque

lb-ft (N·m) 35–45 (3.4–5.1)

Front Axle Assembly—

Axle Housing Cover Screw Torque

lb-ft (N·m) 16–25 (1.8–2.7)

CHASSIS

4271491-Rev B 5-3

5

Component Location

See Figures 5-1 and 5-2.

Figure 5-1: Component Location—Right Side

1 Floorboard Assembly 3 Left Cutting Unit 5 Right Lift Arm 7 Front Axle Assembly 9 Center Cutting Unit

2 Traction Pedal 4 Right Reel Lift Actuator 6 Right Cutting Unit 8 Right Fender 10 Center Reel Lift Actuator

TN2744

1

2

8

3

9

4

10

5

6

7

5-4 4271491-Rev B

CHASSIS

5

Figure 5-2: Component Location—Left Side

1 Brake Pedal Assembly 3 Steering Yoke 5 Left Lift Arm

2 Steering Chain and Gear 4 Left Fender 6 Left Reel Lift Actuator

TN2746

3

2

1

4

6

5

CHASSIS

4271491-Rev B 5-5

5

Checks and Adjustments

Steering Chain Tension Adjustment

See Figures 5-3 and 5-4.



WARNING

1. Park the mower safely. (See “Park Mower Safely” on

page 1-6.)

2. Raise the hood.

Figure 5-3

3. Remove four screws (1), flat washers (2), and nuts

(3).

4. Remove rear controller cover (4).

Figure 5-4

5. Loosen two screws (5).

6. Adjust position of steering motor (7) to obtain

0.063–0.250 in. (1.6–6.4 mm) deflection with 2–10 lb

(9–45 N) push at mid-span of chain (6).

7. Tighten two screws (5).

Repair

Reel Lift Actuators

Removal and Installation

See Figure 5-5.

NOTES

• The right reel lift actuator is shown; the left and

center reel lift actuators are similar.

• If working on the center cutting unit, swing the cutting

unit out from the machine and lock into position.

1. Park the mower safely. (See “Park Mower Safely” on

page 1-6.)

NOTE

For removal purposes, do not place the reel lift actuator

in the fully down position.

Figure 5-5

NOTE

Label all wires before disconnecting to ensure correct

installation.

2. Disconnect reel lift actuator wire connectors (8).

3. Remove cotter pin (1), clevis pin (2), two flat washers

(3), and two spacers (4) from the reel lift actuator (7).

4. Remove cotter pin (5) and flat washer (6).

5. Remove reel lift actuator.

Installation Notes

• Install reel lift actuator by reversing the order of

removal.

• Apply dielectric grease (Jacobsen PN 365422) to

connections.

Be sure that the key switch is off, all electrical

accessories are turned off, and the 12-volt and

48-volt power connectors are disconnected

before starting work on machine.

TN2371

1 2 3

321

4

TN2782

5

6

7

TN2395

5 6

1 32 4

8

7

5-6 4271491-Rev B

CHASSIS

5

Right and Left Lift Arms

Removal and Installation

See Figures 5-6 and 5-7.

NOTE

The right lift arm is shown; the left lift arm is similar.

1. Park the mower safely. (See “Park Mower Safely” on

page 1-6.)

2. Remove reel lift actuator. (See “Reel Lift Actuators”

on page 5-5.)

3. Remove reel leveling rod. (See “Reel Leveling Rod”

on page 6-24.)

Figure 5-6

NOTE

Label all wires before disconnecting to ensure correct

installation.

4. Cut cable ties (3).

5. Disconnect the reel drive motor wire connectors (1).

6. Remove lock pin (5) from yoke shaft (6).

7. Pull the lift arm (4) up and remove the reel assembly

(2).

Figure 5-7

8. Remove cotter pin (7) and flat washer (8).

9. Remove lift arm.

Installation Notes

• Pre-adjust the reel leveling rod before installation.

(See “Reel Leveling Rod Pre-Adjustment” on

page 6-23.)

• Install lift arm by reversing the order of removal.

• Use new cable ties to secure the wire connectors

and wire harness.

• Apply dielectric grease (Jacobsen PN 365422) to

connections.

• Lubricate grease fittings.

TN2398

1

4

5

2

6

3

TN2399

7 8

CHASSIS

4271491-Rev B 5-7

5

Disassembly and Assembly

See Figure 5-8.

Figure 5-8

1Key (2) 5Screw (8) 9 Cotter Pin (2) 13 Polygon Bushing (4) 17 Right Front Lift Arm

2 Flat Washer (12) 6 Stop Bracket (2) 10 Link Arm (2) 14 Shim Washer (as required) 18 Nut (2)

3 Lock Washer (12) 7 Bushing (4) 11 Nut (8) 15 Front Reel Steering Pivot (2) 19 Rubber Bumper (2)

4Screw (2) 8 Flat Washer (2) 12 Left Front Lift Arm 16 Grease Fitting (2) 20 Stop Bracket (2)

1

3

2

TN4525

10

4

7

8

9

4

3

2

1

10

12

13

14

15

13

14

15

17

7

13

5

6

2

3

11

5

6

2

3

11

16

14

5

14

18

3

2

19

11

3

2

20

5-8 4271491-Rev B

CHASSIS

5

Disassembly Notes

• Before disassembly, clean all dirt and debris from lift

arm.

• Inspect all bushings, link arms, lift arms, and reel

steering pivots for damage or wear. Remove

bushings only if replacement is required.

Assembly Notes

• Before assembly, verify that the bushings and mating

surfaces are free of burrs, dirt, and debris.

• Repair or replace the lift arms, link arms, or reel

steering pivots, if necessary.

• Replace any bushings that are damaged or have

excessive wear.

• Apply ant-seize compound to key (1) prior to

assembly.

• Install shim washers (14), as required, to remove

excess gap between left front lift arm (12), link arm

(10), and front reel steering pivot (15). Also install

shim washers (14), as required, to remove excess

gap between right front lift arm (19), link arm (10),

and front reel steering pivot (15).

Center Lift Arm

Removal and Installation

See Figures 5-9 and 5-10.

1. Park the mower safely. (See “Park Mower Safely” on

page 1-6.)

2. Remove reel lift actuator. (See “Reel Lift Actuators”

on page 5-5.)

3. Remove reel leveling rod. (See “Reel Leveling Rod”

on page 6-24.)

Figure 5-9

NOTE

Label all wires before disconnecting to ensure correct

installation.

4. Cut cable ties (1).

5. Disconnect the reel drive motor wire connectors (8).

6. Remove spring (7).

7. Remove cap (3).

8. Remove lock pin (4) from yoke shaft (6).

9.Pull the center lift arm (2) up and remove reel

assembly (5).

Figure 5-10

10. Remove cotter pin (9) and flat washer (10).

11. Remove center lift arm.

Installation Notes

• Pre-adjust the reel leveling rod before installation.

(See “Reel Leveling Rod Pre-Adjustment” on

page 6-23.)

• Install center lift arm by reversing the order of

removal.

• Use new cable ties to secure the wire connectors

and wire harnesses.

• Apply dielectric grease (Jacobsen PN 365422) to

connections.

• Lubricate grease fittings.

Required Materials

Anti-Seize Compou nd

TN2410

8

4

5

1

6

2

7

3

TN2668

9 10

CHASSIS

4271491-Rev B 5-9

5

Disassembly and Assembly

See Figure 5-11.

Figure 5-11

1Lock Pin 8 Flat Washer 14 Thrust Washer 20 Nut26Key

2 Locking Collar 9 Screw 15 Polygon Bushing 21 Grease Fitting 27 Link Arm

3 Polygon Bushing 10 Lock Washer 16 Flat Washer 22 Center Reel Steering Pivot 28 Screw

4Bushing 11 Flat Washer 17 Cotter Pin 23 Shim Washer (as required) 29 Flat Washer

5 Center Swing Arm 12 Locking Pin Bracket 18 Center Stop Bracket 24 Polygon Bushing 30 Eye Bolt

6Nut13Actuator Pivot Pin 19 Rubber Bumper 25 Center Lift Arm 31 Spring

7Lock Washer

TN2786

1

TN2786

2

3

4

5

9

10

11

8

7

6

12

13

14

15

16

17

20

10

11

10

11

9

18

20

10

11

19

21

22

24

23

24

23

31

30

20

29

20

28

10

11

27

26

19

25

5-10 4271491-Rev B

CHASSIS

5

Disassembly Notes

• Before disassembly, clean all dirt and debris from

center lift arm and center swing arm.

• Inspect link arm, center lift arm, center swing arm,

reel steering pivot, and all bushings for damage or

wear. Remove bushings only if replacement is

required.

Assembly Notes

• Before assembly, verify that the bushings and mating

surfaces are free of burrs, dirt, and debris.

• Repair or replace the link arm, center lift arm, center

swing arm, or reel steering pivot, if necessary.

• Replace any bushings that are damaged or have

excessive wear.

• Apply ant-seize compound to key (26) prior to

assembly.

• Install shim washers (23), as required, to remove

excess gap between center lift arm (26), link arm

(27), and center reel steering pivot (22).

Steering Yoke (2WD)

Removal and Installation

See Figures 5-12 through 5-14.



WARNING

1. Park the mower safely. (See “Park Mower Safely” on

page 1-6.)

Figure 5-12

2. Swing out and lock the center cutting unit (1) from

under the machine.



WARNING

IMPORTANT

It is important to lift and support the machine, or the

machine will move.

3. Lift the machine so that the rear wheel is off the

ground, and support with appropriate jackstands.

Required Materials

Anti-Seize Compou nd

Be sure that the key switch is off, all electrical

accessories are turned off, and the 12-volt and

48-volt power connectors are disconnected

before starting work on machine.

• Support the machine using properly rated

jackstands. Never work under a machine

supported only by a jack.

• Do not use wood or concrete blocks to

support the machine. Failure to properly

support the machine may result in death or

serious injury.

1

TN2388

CHASSIS

4271491-Rev B 5-11

5

4. Remove rear wheel and axle assembly. (See “Rear

Wheel and Axle Assembly (2WD)” on page 7-27.)

5. Remove steering sensor. (See “Steering Sensor

(2WD)” on page 4-157.)

6. Remove steering chain and steering gear. (See

“Steering Chain and Gears” on page 5-14.)

Figure 5-13

7. Support steering yoke (8) and remove retaining ring

(2).

8. Remove bushing (3) from steering yoke (8).

9. Lower the steering yoke (8) from frame (5).

10. Remove two thrust washers (6) and thrust bushing

(9) from steering yoke (8).

11. Remove thrust washer (7) from steering yoke (8).

12. Remove two polygon bushings (4) from frame (5).

Figure 5-14

13. Remove two screws (10).

14. Remove steering stop (11) from steering yoke (8).

Installation Notes

• Install steering yoke by reversing the order of

removal.

• Adjust the steering chain tension. (See “Steering

Chain Tension Adjustment” on page 5-5.)

TN4538

8

2

3

4

5

6

7

9

TN4537

8

11

10

5-12 4271491-Rev B

CHASSIS

5

Steering Yoke (3WD)

Removal and Installation

See Figures 5-15 through 5-17.



WARNING

1. Park the mower safely. (See “Park Mower Safely” on

page 1-6.)

2. Remove steering sensor. (See “Steering Sensor

(3WD)” on page 4-160.)

Figure 5-15

3. Swing out and lock the center cutting unit (1) from

under the machine.



WARNING

IMPORTANT

It is important to lift and support the machine, or the

machine will move.

4. Lift the machine so that the rear wheel is off the

ground, and support with appropriate jackstands.

5. Remove rear fender. (See “Rear Fender (3WD)” on

page 7-26.)

6. Remove rear traction motor. (See “AC Traction Motor

(3WD)” on page 4-182.)

7. Remove steering sensor. (See “Steering Sensor

(3WD)” on page 4-160.)

8. Remove steering chain and steering gear. (See

“Steering Chain and Gears” on page 5-14.)

Figure 5-16

9.Support steering yoke (8) and remove retaining ring

(2).

10. Remove bushing (3) from steering yoke (8).

11. Lower the steering yoke (8) from frame (5).

12. Remove two thrust washers (6) and thrust bushing

(9) from steering yoke (8).

13. Remove thrust washer (7) from steering yoke (8).

14. Remove two polygon bushings (4) from frame (5).

Be sure that the key switch is off, all electrical

accessories are turned off, and the 12-volt and

48-volt power connectors are disconnected

before starting work on machine.

• Support the machine using properly rated

jackstands. Never work under a machine

supported only by a jack.

• Do not use wood or concrete blocks to

support the machine. Failure to properly

support the machine may result in death or

serious injury.

1

TN2388

TN4456

2

3

4

5

9

8

6

4

7

CHASSIS

4271491-Rev B 5-13

5

Figure 5-17

15. Remove two screws (10).

16. Remove steering stop (11) from steering yoke (8).

Installation Notes

• Install steering yoke by reversing the order of

removal.

• Fill the gap between polygon bushings (4) with

Lubriplate A Grease.

• Adjust the steering chain tension. (See “Steering

Chain Tension Adjustment” on page 5-5.)

• Adjust the steering sensor air gap. (See “Steering

Sensor (3WD) Adjustment” on page 4-146.)

Required Materials

Lubriplate A Grease

TN4455

8

11

10

5-14 4271491-Rev B

CHASSIS

5

Steering Chain and Gears

Removal and Installation

See Figures 5-18 and 5-19.



WARNING

1. Park the mower safely. (See “Park Mower Safely” on

page 1-6.)

2. Remove steering sensor. (See “Steering Sensor

(2WD)” on page 4-157 or “Steering Sensor (3WD)”

on page 4-160.)

Figure 5-18

NOTE

Note orientation of the chain before removing to ensure

correct installation.

3. Loosen two screws (2) and slide the steering motor

bracket (3) to remove the chain (1).

4. Remove chain from gears.

Figure 5-19

NOTE

For installation purposes, measure from the top of the

steering motor shaft (4) to the top of the steering motor

gear (11) before removing and note the measurement.

5. Remove two set screws (6) from steering motor gear

(11).

6. Use the appropriate gear puller and remove steering

motor gear (11) and key (5).

7. Remove screw (7) from steering gear (9).

8. Use the appropriate gear puller and remove steering

gear (9) and key (8).

Installation Notes

• Apply anti-seize compound to keys (5 and 8) prior to

installation.

• Install the gears and chain by reversing the order of

removal.

• When installing the steering motor gear, install to the

measurement taken prior to removing.

• Verify that the chain is clear of obstructions.

• Adjust the steering chain tension. (See “Steering

Chain Tension Adjustment” on page 5-5.)

Be sure that the key switch is off, all electrical

accessories are turned off, and the 12-volt and

48-volt power connectors are disconnected

before starting work on machine.

TN4544

3

1

2

Required Materials

Anti-Seize Compound

TN2370

10

6

11

9

7

4

5

8

CHASSIS

4271491-Rev B 5-15

5

Front Fenders

Removal and Installation

See Figure 5-20.

NOTE

The left fender is shown; the right fender is similar.

1. Park the mower safely. (See “Park Mower Safely” on

page 1-6.)

2. Remove cowlings. (See “Cowlings” on page 7-33.)

Figure 5-20

3. Remove three screws (1) and flat washers (2).

4. Remove two screws (3) and nylon insulators (4).

5. Remove front fender (5).

Installation Note

Install front fenders by reversing the order of removal.

Traction Pedal

Removal and Installation

See Figure 5-21.

1. Park the mower safely. (See “Park Mower Safely” on

page 1-6.)

Figure 5-21

2. Remove screws (1), lock washers (2), and flat

washers (3).

3. Remove nut (5), lock washer (6), and flat washer (7).

4. Remove traction pedal (4).

Installation Note

Install traction pedal by reversing the order of removal.

TN2383

1 2

5

43

TN2407

1

5 6 7

2

4

3

5-16 4271491-Rev B

CHASSIS

5

Brake Pedal Assembly

Removal and Installation

See Figures 5-22 and 5-23.

1. Park the mower safely. (See “Park Mower Safely” on

page 1-6.)

2. Remove brake pedal switch. (See “Brake Pedal

Switch” on page 4-175.)

3. Remove brake pedal position sensor. (See “Brake

Pedal Position Sensor” on page 4-176.)

4. Remove front cover. (See “Front Cover” on

page 7-31.)

5. Remove rear cover. (See “Rear Cover” on

page 7-31.)

6. Remove left fender. (See “Front Fenders” on

page 5-15.)

Figure 5-22

7. Remove screws (1) and washers (2).

8. Remove screws (3) and washers (4).

Figure 5-23

9. Remove pedal grip (5).

NOTE

Move floor mat aside to access screws (7).

10. Support brake pedal assembly (6) and remove

screws (7).

11. Rotate and lower the brake pedal assembly to

remove the brake pedal assembly from the machine.

Installation Note

Install brake pedal assembly by reversing the order of

removal.

TN2682

1 2

43

TN2414

5

6

7

CHASSIS

4271491-Rev B 5-17

5

Disassembly and Assembly

See Figure 5-24.

Figure 5-24

1 Screw (4) 5 Brake Arm Weldment 8 Switch Arm 11 Spring

2 Brake Pedal Position Sensor 6 Spring Roll Pin (2) 9 Brake Pedal Switch 12 Spacer (4)

3 Brake Plate (2) 7 Pedal Grip 10 Screw (4) 13 Nut (4)

4Bushing (2)

1

3

2

TN2415

4

5

6

8

4

9

1

10

3

11

12

13

7

5-18 4271491-Rev B

CHASSIS

5

Axle Shield and Front Splash Shield

Removal and Installation

See Figure 5-25.

1. Park the mower safely. (See “Park Mower Safely” on

page 1-6.)

Figure 5-25

2. Remove three shield fasteners (2), and remove axle

shield (1).

3. Remove three panel fasteners (4), and remove front

splash shield (3).

Installation Notes

• Install axle shield and front splash shield by reversing

the order of removal.

• Use new fasteners (2 and 4) to secure the front

splash shield (3) and axle shield (1).

TN4526

~

2

4

3

1

CHASSIS

4271491-Rev B 5-19

5

Floorboard

Removal and Installation

See Figures 5-26 through 5-29.

1. Park the mower safely. (See “Park Mower Safely” on

page 1-6.)

2. Remove front fenders. (See “Front Fenders” on

page 5-15.)

3. Remove front cover. (See “Front Cover” on

page 7-31.)

4. Remove rear cover. (See “Rear Cover” on

page 7-31.)

5. Remove traction pedal position sensor. (See

“Traction Pedal Position Sensor” on page 4-178.)

6. Remove brake pedal assembly. (See “Brake Pedal

Assembly” on page 5-16.)

7. Remove axle shield and front splash shield. (See

“Axle Shield and Front Splash Shield” on page 5-18.)

Figure 5-26

8. Remove two screws (2), and remove fender support

(1) on each side of the floorboard.

Figure 5-27

9. Remove three screws (3) and washers (4).

Figure 5-28

10. Remove three screws (5), washers (6), and floor mat

(7).

TN4529

1

2

TN2677

3 4

TN2670

5 6

7

5-20 4271491-Rev B

CHASSIS

5

Figure 5-29

11. Remove four screws (6) and lock washers (7).

12. Remove floorboard (8).

Installation Note

Install floorboard by reversing the order of removal.

Front Wheel Hub

Removal and Installation

See Figure 5-30.

1. Park the mower safely. (See “Park Mower Safely” on

page 1-6.)

2. Remove front wheel. (See “Front Wheels” on

page 7-29.)

Figure 5-30

3. Remove cotter pin (2).



CAUTION

4. Loosen, but do not remove, castle nut (1).

5. Loosen wheel hub (3) from front axle assembly (4)

using a suitable puller.

6. Remove castle nut (1).

7. Remove wheel hub (3) from front axle assembly (4).

Installation Notes

• Apply anti-seize compound to axle shaft splines.

• Install front wheel hub by reversing the order of

removal.

• Tighten castle nut (1) to 95–115 lb-ft (10.7–13.0

N·m).

TN2413

6 7

8

The wheel hub may move unexpectedly when

using a puller. To prevent injury and/or property

damage, do not remove the castle nut until the

wheel hub has been loosened from the axle.

Required Materials

Anti-Seize Compound

TN2812

4

1

2

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Ransomes 62800, 62801, 62802, 62803, 62804, 62805, 62825, 62826 User manual

Ransomes 62800, 62801, 62802, 62803, 62804, 62805, 62825, 62826 User manual

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