Iveco EuroCargo (12 to 26 t). Manual — part 83

Disassemble gearbox control module according to the
procedure described in the present Section on page 179.

Disassemble gearbox control module according to the
procedure described in this Section on page 179.

Disassemble filter cover (1) by unscrewing the screws securing
it to oil sump (2).

REPLACING THE SOLENOID VALVES

REPLACING OIL SUCTION FILTER

52069

Remove cover (1) and replace filter (2), gasket (3) and seal (4).

Install cover (1) and tighten securing screws to a torque of 12
to 14 Nm.

Assemble gearbox control module again according to the
procedure described in this Section on page 179.

52068

52070

a)

Solenoid valves (1), (2) and (3) belong to the N/C type
(Normally Closed). To operate on these solenoid valves
disconnect the wiring corresponding to the valves and
disassemble valve casings (6) from the gearbox control
module by unscrewing the screws connecting it to the oil
sump (4).

b)

Solenoid valves (9) and (11) belong to the N/O type
(Normally open); solenoid valve (10) belongs to the N/C
type (Normally Closed). For operating on these solenoid
valves, disconnect the wiring corresponding to the differ-
ent valves and disassemble valve casings (7) from the
gearbox control module by unscrewing the screws con-
necting it to the oil sump (4).

c)

To replace solenoid valve (8) (N/C type), disconnect
wiring from all the solenoid valves and disassemble valve
casing (6) and (7), by unscrewing the screws securing
them to the oil sump (4). Remove separating plate divid-
ing valve casings (6) and (7) from valve casing (5): Re-
move casing (5) from gearbox control module.

In the three case (a, b, c) proceed as follows with replacing the
failed solenoid valve after disassembling the valve casing
containing it:

- Remove the pin securing the solenoid valve from the

valve casing bottom.

- Remove the failed solenoid valve from the valve casing.

- Install the new solenoid valve with the two O-rings in the

kit.

- Use the pin to lock the solenoid valve.

After replacing the solenoid valve assemble the solenoid valve
casings again by properly reversing the operations described
in items a, b, c, and tighten screws to a torque of 12 to 14 Nm.
Re-assemble the control module according to the procedure
described in the present Section on page 179.

Figure 11

Figure 12

Figure 13

ALLISON GEARBOX MD 3060P

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12-26 t

REPLACING PLANE GASKETS IN GEARBOX CONTROL MODULE

Disassemble the gearbox control module according to the
procedure described in this Section on page 179.

The control module is connected to the main gearbox box by
interposing a plane gasket (1), that can be replaced once having
disassembled the control module.

There is second plane gasket interposed between the oil sump
(2) and the separating plate (3) on which the control module
components are laying.

To replace this last gasket, proceed as follows after disassem-
bling the control module from the remaining part of the gear-
box:

- Disconnect all the internal wiring connectors (10);

- Disassemble electric connector (8) from control module;

- Disassemble the oil suction filter (9);

52071

- Disassemble the oil level sensor (4);

- Disassemble the valve casings (5), (6), (7);

- Remove the separating plate (3);

- Replace the worn out gasket with a new one and position

it on oil sump (2) with the help of guiding pins (11);

Assemble the control module again by properly reversing the
above mentioned operations.

Comply with torque shown in table on page 177.

Connect control module again to the main gearbox seat com-
plying with the procedure described in this Section on page
179.

Figure 14

182

ALLISON GEARBOX MD 3060P

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12-26 t

Base - February 2003

REPLACING PRESSURE SWITCH F3

52072

Disassemble the control module according to the procedure
described in this Section on page 179.

Disconnect connector (2) in pressure switch (1).

Remove pressure switch (1) by unscrewing the two screws
connecting it to valve casing (3).

Install the new pressure switch and use the O-ring in the kit.

Tighten the securing screws to a torque of 5 to 8 Nm.

Connect the pressure switch connector again.

Assemble the control switch again according to the procedure
described in this Section on page 179.

REPLACING THE SEAL RING ON THE
OUTPUT SHAFT

52074

Disconnect the transmission shaft from gearbox flange (2).

Unscrew screws (1) connecting securing plate (3) to the
gearbox output shaft.

Remove the safety plate, the securing plate, the O-ring and the
gasket.

Remove flange (2) from the rear cover (4) and use a proper
tool to remove the seal ring.

Clean the seal ring seat and remove any slag present.

Replace the seal ring and the O-ring. Use keying device
99374013 to insert the seal ring in its seat.

Assemble gearbox flange again by properly reversing the
above mentioned operations.

Tighten screws (1) to a torque of 30 to 35 Nm.

Connect the transmission shaft to the gearbox again.

Figure 15

Figure 16

ALLISON GEARBOX MD 3060P

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12-26 t