Iveco EuroCargo (12 to 26 t). Manual — part 84

GEARBOX EATON FSO 5206B

E

URO

C

ARGO

T

ECTOR

12-26 t

185

Base - February 2003

Gearbox
EATON FSO 5206B

Page

DESCRIPTION

187

. . . . . . . . . . . . . . . . . . . . . . . . . .

POSITION OF GEARSHIFT IDENTIFICATION TAG

188

SPECIFICATIONS AND DATA

189

. . . . . . . . . . . . .

-

Gear selection and engagement grid

192

. . . . . . . .

TIGHTENING TORQUES

193

. . . . . . . . . . . . . . . . .

TOOLS

195

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

EXPERIMENTAL TOOLS

199

. . . . . . . . . . . . . . . . . .

GEARSHIFT OVERHAUL

200

. . . . . . . . . . . . . . . . . .

-

Checks

200

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

GEAR DRIVE CASE

200

. . . . . . . . . . . . . . . . . . . . . . .

-

Disassembling

200

. . . . . . . . . . . . . . . . . . . . . . . . .

-

Assembling

201

. . . . . . . . . . . . . . . . . . . . . . . . . . .

-

Refitting

203

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

-

Disassembling the gearbox

204

. . . . . . . . . . . . . . .

MOTION INLET SHAFT

207

. . . . . . . . . . . . . . . . . . .

-

Disassembling

207

. . . . . . . . . . . . . . . . . . . . . . . . .

-

Assembling

207

. . . . . . . . . . . . . . . . . . . . . . . . . . .

OUTPUT SHAFT

207

. . . . . . . . . . . . . . . . . . . . . . . .

-

Disassembling

207

. . . . . . . . . . . . . . . . . . . . . . . . .

-

Assembling

211

. . . . . . . . . . . . . . . . . . . . . . . . . . .

INTERNAL DRIVING SHAFT

215

. . . . . . . . . . . . . . .

-

Disassembling

215

. . . . . . . . . . . . . . . . . . . . . . . . .

-

Assembling

216

. . . . . . . . . . . . . . . . . . . . . . . . . . .

-

Gearbox assembling

217

. . . . . . . . . . . . . . . . . . . .

-

Adjusting the axial play of countershaft bearings

220

Figure 1

The Eaton FSO 5206 B gearshift is of the mechanic type, with
synchronized forward gear engagement.

The gearbox is made of light alloy and is made up of a front
half case, a rear half case (which incorporates the gear
engagement gearing and controls), a drive case and a clutch
bell.

The rear half case has, on its sides and rear portions, special
openings for insertion of power takeoffs (where required).

Motion is transmitted by means of a constant-mesh gear set
with helicoidal teeth (for 6

th

/5

th

- 4

th

/3

rd

speeds) and straight

teeth (for 1

st

speed and reverse).

The gears force-fitted onto the output shaft and the gear on
the reverse gear shaft rotate idle on cylindrical roller cages.

The motion inlet shaft and the output shaft are supported, in
the gearbox, by non-adjustable roller bearings.

The countershaft is supported, in the gearbox, by
tapered-roller bearings that can be adjusted axially by means
of ring shims.

Gear engagement synchronization is obtained by means of
free-ring synchronizers with single cone (for 5

th

, 4

th

, 3

rd

speeds and reverse) and double cone (for 1

st

and 2

nd

speeds).

The gear engagement and selection control is of the mechanic
type and is obtained by a rod on which the three engaging
forks and the 4

th

- 5

th

speed engagement fork control block

are force-fitted.

84438

GEARBOX EATON FSO 5206B

E

URO

C

ARGO

T

ECTOR

12-26 t

187

Base - February 2003

Figure 2

84439

KZ

GEARBOX EATON FSO 5206B

E

URO

C

ARGO

T

ECTOR

12-26 t

188

Base - February 2003

Type of transmission

Design no.

FSO 5206 H

Y 05172

FS
O
5
2
06
H

Standard code
Overdrive
Rated torque, x 100 lb ft (foot-pound)
Series 1
Number of forward speeds
Type of specific ratio

The gearbox design number is unique to each
customer and provides accurate information on the
gearbox design level. The number must be specified
when ordering spare parts.
The middle digit indicates the design level.

GEARBOX EATON FSO 5206B

E

URO

C

ARGO

T

ECTOR

12-26 t

189

Base - February 2003

GEARBOX

Eaton FSO 5206B

Type

Mechanical

Gears

6 forward gears

reverse gear

Gears engagement control

Mechanical

Power takeoff (optional)

-1, On rear part

-1, On side part

Gears engagement:

- 5

th

— 6

th

/ 3

rd

— 4

th

Double-cone synchronizer

- 1

st

— 2

nd

Free-ring synchronizer

Reverse gear

Quick-connection type

Gears anti-disengagement
- 1

st

— 2

nd

- 3

rd

— 4

th

/ 5

th

— 6

th

Retention of sliding sleeves by means of

springs, pins, balls and dowels

springs, pins and rollers

Gears
- 1

st

— 2

nd

- 3

rd

— 4

th

/ 5

th

— 6

th

constant-mesh

straight teeth

helicoidal teeth

Gear ratio

First

6.08

Second

3.52

Third

2.09

Fourth

1.35

Fifth

1.00

Sixth (overdrive)

0.79

Reverse gear

5.43

Oil type

Amount

TUTELA ZC 90

6.5 Kg. (7 lt)