ar2910b4598c

Remove/install clutch pedal

Tipo ar · tema 29.10 · versione 0101 · 2017-09-19

Valido per: Model 979.01

Non disponibile in “it”; mostrato in Inglese.

Collocazione

Gruppo funzionale 2 Telaio › 29 Pedaliera › 29.10 Pedale, supporto cuscinetto — Serie 979 (modelli 01*)

EinPAS 17 Organi della trasmissione/assale › 17.15 Frizione › 17.15.5 Azionamento della frizione — Serie 979 (modelli 01*)

AR29.10-B-4598C

Remove/install clutch pedal

11.09.2017

Model

979.01

Remove/install clutch pedal

B29.10-0028-09

Remove/install clutch pedal

B29.10-0031-09

1

Pedal fixing bracket

17

Support shaft

1.1

Hole

18

Sliding fork

2

Clutch pedal

19

Auxiliary spring

3

Elastic ring

19.1

Pedal return spring

4

Pivot shaft

20

Spring plate

5

Washers

21

Adjusting nut

6

Pivot shaft

22

Center shaft of the clutch pedal

7

Actuation rod of the hydraulic master cylinder

22.1

Threaded part of the center rod

7.1

Threaded part of the rod

22.2

Central shaft ball joint

7.2

Adjusting nut

23

Pedal switch

7.3

Ball-and-socket joint

24

Hydraulic sender cylinder

8

Spacing washer

25

Fastening screws

9

Elastic ring

26

Protection hood

10

Fastening bolt

11

Guide sleeve

A

Auxiliary pedal spring length (set to the appropriate dimension)

12

Spacer ring

B

Clutch pedal stroke measured on a 360 mm radius from the center of the articulation center shaft

13

Self-locking nut

C

Adjusting measurement of the pedal stop bolt

14

Support lining

D

Reference measurement for regulation of the hydraulic transmitter cylinder drive shaft (mounted)

15

Bolt with stopper

E

Length of the actuation rod adjusted for assembly (basic measurement for assembly)

15.1

Adjusting nut

F

Clearance between the actuation rod and the hydraulic master cylinder piston

16

Stopper

Remove

1

Place vehicle on a flat and leveled place and shim rear wheels to avoid it from moving accidentally

2

Disconnect the negative battery cable or turn off the main switch

AR54.10-B-0003TA

3

Remove steering column cover to allow easy access to pedals

AR46.10-B-7300A

Caution

Risk of poisoning from swallowing brake fluid. Risk of injury from skin and eye contact with brake fluid

Only pour brake fluid into suitable and appropriately marked containers. Wear protective clothing and eye protection when handling brake fluid.

AS42.50-Z-0001-01A

4

Protect the cab lower part against brake fluid sparkling


Properly cover the lower part of the cab, because even very carefully, traces of brake fluid may remain.
Which may cause damage to the paint or other components.

5

Empty the clutch actuation system fluid

AR25.20-B-0070E

Use adequate bleeding equipment.

6

Disconnect the pipe at the outlet and inlet of the hydraulic transmitter cylinder (24)

Hold the empty pipe and without fluid under the dashboard. Release the inlet pipe of the brake fluid in the transmitter cylinder. Cover the end of the pipe with a small plug to prevent brake fluid spills.

Handle brake fluid reservoir with care.

7

Remove the collar bolts fastening the bracket (1) on the main bracket of the steering in the holes (1.1)

8

Remove the complete clutch pedal assembly carefully

Pedal assembly will come out with installed bracket and sender cylinder.

Disassemble

9

Secure the assembly on an appropriate base by the bracket (1)

10

Remove the two collar bolts (25) and remove from the bracket, the hydraulic master cylinder (24)

11

At the top, remove the spring ring (9), the spacer washer (8), the joint shaft (6) and remove the drive shaft assembly (7) of the hydraulic transmitter cylinder

12

Remove the actuation rod protection boot (26)

13

Release the nut (21) on the shaft (22) until fully release of the auxiliary spring (19) and remove sliding fork (18) from the support shaft (17)

Should it be necessary, remove the auxiliary spring support shaft (17) from the bracket (1).

14

Remove the auxiliary spring (19) and the spring plate (20)

15

Remove the flange bolt (13), the distance ring (12), the guide bushing (11), the bolt (10) and the spring center rod (22)

16

Remove the spring rings (3) on both sides, remove the joint shafts (4) and spacer washers (5), remove the return spring (19.1)

17

Remove the pedal (2)

18

Remove the foot pad (14) from the pedal

19

Loosen the flange bolt (15.1) and remove the stop with the integrated bolt (15) from the support

Clean

20

Clean all the components

Check

21

Examine all components that can justify wear or deformation, especially the ball joints of the shafts (7, 22) and replace whatever required

Assembly: Spring rings (3) and (9), spacing or spacer washers (5) and (8), pedal foot support fixture (14). Pedal limiting stopper (15). Replace the protection guard (26). The auxiliary spring (19) and return spring (19.1) in case of insufficient pressure.

Assemble

22

Place the pedal (2) on the support, install the new return spring (19.1), the lubricated joint shaft (4), the separating washers (5) and the new spring rings (3) on both sides

Install a new foot support (14) on the pedal (2).

23

Prepare the actuation rod (7) for assembly

If necessary, adjust the length "E" or "D" and lubricate the ball joint (7.3) indicated by arrows.

.Measurement “D” of the actuation rod

*BE29.10-B-1005-01D

.Actuation rod length “E

*BE29.10-B-1006-01D

24

On the pedal install the drive shaft assembly (7), the lubricated joint shaft (6), the spacer washer (8) and the new spring ring(9)

Install the new protection guard (26).

25

Install on the bracket (1) the hydraulic master cylinder (24) place the two flange bolts (25) and tighten them

Tighten the bolts in stages.

.Bolts attaching the hydraulic clutch master cylinder.

*BA29.10-B-1010-02C

26

Adjusting the rod clearance: Hold the rod with a fixed wrench, loosen the nut (7.2) on the thread (7.1) and turn the rod (7) by hand until you feel the stop, then lightly return the rod and fasten it with the nut (7.2)

The hydraulic transmitter cylinder has a piston return spring and, even in cases of no pressure, it is possible to previously set up the clearance "F" of the shaft.

The final adjustment will be made after bleeding the hydraulic clutch actuation system

.Clearance “F” between actuation rod and the emitter cylinder piston, adjusted.

*BE29.10-B-1007-01D

27

Screw the nut (15.1) to the new limiting stopper (15). Install limiting stopper on the support and adjust dimension "C", tighten the nut (15.1) to the specified torque

The rubber stop will have to be clean.

Measurement “C” of the stop.

.Self-locking flange nut of the clutch pedal.

*BA29.10-B-1005-02C

.Height “C” of the stop bolt

*BE29.10-B-1004-01D

28

Prepare the drive rod (22) for mounting

29

Install on the center shaft of the auxiliary spring(22)

Lightly lubricate the parts: The nut (21) on the threaded part (22.1) of the rod, the spring retainer (20), the new auxiliary spring (19) and the sliding fork (18).

30

Install the full rod supported with sliding fork (18) on support shaft (17) and install on the pedal (2) the joint jib bushing (11), the spacer ring (12) and tighten the self-locking flange nut (13)

31

With the assembled rod, tighten the nut (21) until the auxiliary spring (19) reaches measurement “A”

.Length “A” of the auxiliary spring

*BE29.10-B-1001-01D

Install

32

Assemble the complete clutch pedal assembly with the bracket (1) on the main bracket and fasten it with the flange bolts indicated on the holes (1.1)

.Flange bolts, attaching the clutch pedal support to the main bracket.

*BA29.10-B-1002-02C

33

Connect the brake fluid supply pipe on the hydraulic master cylinder and install the fastening clamp

34

Connect the master cylinder outlet pipe and tighten it normally

35

Connect the electric wires on the clutch pedal switch (23)

36

Fill clutch actuator system with brake fluid and bleed the system

AR25.20-B-0070E

Use adequate bleeding equipment.

37

Confirm the adjustment of the drive shaft (7) on the transmitter cylinder

Clearance “F” between rod and piston.

.Clearance “F” between actuation rod and the emitter cylinder piston, adjusted.

*BE29.10-B-1007-01D

38

Adjust clutch pedal

Adjust clutch pedal

AR29.10-B-0090C

39

Install steering column cover to allow easy access to pedals

AR46.10-B-7300A

40

Verify if everything is in place, connect negative battery cable or turn on main switch

AR54.10-B-0003TA

41

Charge pneumatic system and perform a test run

Pedals

Number

Designation

Vehicles 979.013/016

BE29.10-B-1001-01D

Length “A” of the auxiliary spring

mm

71

Pedals

Number

Designation

Vehicles 979.013/016

BE29.10-B-1004-01D

Height “C” of the stop bolt

Z519.201/16

mm

28

Z519.201/55

mm

-

Z519.201/18

mm

-

Pedals

Number

Designation

Vehicles 979.013/016

BE29.10-B-1005-01D

Measurement “D” of the actuation rod

mm

31

Pedals

Number

Designation

Vehicles 979.013/016

BE29.10-B-1006-01D

Actuation rod length “E

mm

153

Pedals

Number

Designation

Vehicles 979.013/016

BE29.10-B-1007-01D

Clearance “F” between actuation rod and the emitter cylinder piston, adjusted.

mm

0,50

Support pedals and bracket

Number

Designation

Vehicles 979.013/ 016

BA29.10-B-1002-02C

Flange bolts, attaching the clutch pedal support to the main bracket.

M8

Nm

21

Support pedals and bracket

Number

Designation

Vehicles 979.013/ 016

BA29.10-B-1005-02C

Self-locking flange nut of the clutch pedal.

M8X1,25

Nm

21

Support pedals and bracket

Number

Designation

Vehicles 979.013/ 016

BA29.10-B-1010-02C

Bolts attaching the hydraulic clutch master cylinder.

M6X1

Nm

9

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