Engines Iveco C10,C13, Cursor 10, Cursor 13. Manual

77795

107217

Figure 93

Figure 94

Drift with seat for bushings to insert/extract.

Grub screw for positioning bushings.

Reference mark to insert seventh bushing correctly.

Reference mark to insert bushings 1, 2, 3, 4, 5, 6 correctly (red marks).

Guide bushing.

Guide line.

Guide bushing to secure to the seventh bushing mount.

Plate fixing bushing G to cylinder head.

Grip.

Extension coupling.

Assemble the drift together with the extension.
To insert bushings 1, 2, 3, 4 and 5, proceed as follows:
1 position the bushing to insert on the drift (A) making the

grub screw on it coincide with the seat (B) (Figure 93) on
the bushing.

2 position the guide bushing (E) and secure the guide

bushing (G) (Figure 93) on the seat of the 7

bushing

with the plate (H).

3 while driving in the bushing, make the reference mark (F)

match the mark (M). In this way, when it is driven home,
the lubrication hole on the bushing will coincide with the
oil pipe in its seat.
The bushing is driven home when the 1

red reference

mark (D) is flush with the guide bushing (G).

71725

Figure 95

The sequence for removing the bushings is 7, 6, 5, 4, 3, 2, 1.
The bushings are extracted from the front of the single seats.
Removal does not require the drift extension for bushings 5,
6 and 7 and it is not necessary to use the guide bushing.
For bushings 1, 2, 3 and 4 it is necessary to use the extension
and the guide bushings.
Position the drift accurately during the phase of removal.

Removal

Assembly

Front

Rear

Replacing camshaft bushings with drift 99360499

CURSOR ENGINES F3A

SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS

Base - May 2007

71723

71724

Figure 96

Figure 97

To insert the bushing (6), proceed as follows:

- Unscrew the grip (I) and the extension (N).

- Position the extension (N) and the guide bushing (E) as

shown in the figure.

- Repeat steps 1, 2, 3.

To insert bushing (7), proceed as follows:

- Unscrew the grip (I) and the extension (N).

- Refit the guide (G) from the inside as shown in the figure.

- Position the bushing on the drift (A) and bring it close

up to the seat, making the bushing hole match the
lubrication hole in the head. Drive it home.
The 7

bushing is driven in when the reference mark (C)

is flush with the bushing seat.

Front

Rear

Front

Rear

70000

Figure 98

Figure 99

MAIN DATA TO CHECK THE SPRING

FOR INTAKE AND EXHAUST VALVES

Valve springs

Indicative figure. Before assembly, check the efficiency of the
spring.
Compare the load and elastic deformation data with those
of the new springs given in the following figure.

116813

Free spring height

Valve closed

Valve open

SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS

CURSOR ENGINES F3A

Base - May 2007

44925

The cams of the camshaft control the rocker arms directly: 6 for the injectors and 12 for the valves.
The rocker arms run directly on the profiles of the cams by means of rollers.
The other end acts on a crosspiece that rests on the stem of the two valves.
There is a pad between the rocker arm adjustment screw and the crosspiece.
There are two lubrication ducts inside the rocker arms.
The length of the rocker arm shaft is basically the same as that of the cylinder head. It has to be detached to be able to reach
all the parts beneath.

Figure 100

Fitting valves and oil seal

Figure 101

ROCKER SHAFT

Figure 102

Lubricate the valve stem and insert the valves in the
respective valve guides; fit the lower caps (1). Use tool
99360328 to fit the oil seal (2) on the valve guides (3) of the
exhaust valves; then, to fit the valves, proceed as follows.

87051

86290

- Mount the springs (6) and the top plate (5).

- Fit the tool 99360262 (2) and secure it with the bracket

(4). Screw down the lever (1) to be able to fit on the
cotters (3). Take off the tool (2).

CURSOR ENGINES F3A

SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS

Base - May 2007

73539

Figure 103

44914

44912

44913

Figure 104

Figure 105

Figure 106

PUMP INJECTOR ROCKER ARMS

INTAKE VALVE ROCKER ARMS

Check the surfaces of the bushings, which must show no
signs of scoring or excessive wear; if they do, replace the
rocker arm assembly.

EXHAUST VALVE ROCKER ARMS

Rocker arms

SECTION A-A

SECTION B-B

SECTION A-A

SECTION B-B

SECTION A-A

SECTION B-B

42,

015

42,

071

42,

025

42,

041

56,

030

56,

049

Check that the surface of the shaft shows no scoring or
signs of seizure; if it does, replace it.

MAIN DATA OF THE ROCKER ARM SHAFT

Figure 107

EXHAUST VALVE ROCKER ARM HOLDER LEVER

99376

Shaft

SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS

CURSOR ENGINES F3A

Base - May 2007

Content .. 32 33 34 35 ..

Engines Iveco C10,C13, Cursor 10, Cursor 13. Manual - part 34