Iveco Daily. Manual — part 165
88338
88339
88340
88341
Figure 148
Figure 149
Figure 150
Figure 151
Fit the thermostat casing (3) with a new seal and tighten the
fixing screws (4) to the prescribed torque.
Fit the temperature sensors (1 and 2) and tighten them to the
prescribed torque.
Fit the brackets for lifting the engine and tighten the fixing
screws to the prescribed torque.
Remove the screws (2 and 3) and the covers (1 and 4)
together with the over-head seal rings.
Remove the nuts (4) and the top skid (3).
Remove the screws (1) and the shoulder plate (2).
Tilt the over-head (1) and take care not to damage the seats,
then take off the camshafts (2 and 3) from the overhead.
540650
Overhead
Overhead removal
556
F1C ENGINE
D
AILY
Base - May 2004
1. Rocker arm - 2. Reaction hydraulic tappet -
3. Valve assembly - 4. Camshaft on exhaust side -
5. Camshaft on suction side - 6. Camshaft control chain.
Description
The timing system is the type with a twin camshaft in the head
and four valves per cylinder with hydraulic tappets.
The control is transmitted by two chains:
- a double chain by 3/8” is set in motion by the driving shaft
and sets the control shafts in motion: oil pump/depressor
— high pressure pump;
- a single chain is set in motion by the high pressure control
shaft gear and sets the camshafts in motion.
The camshaft gears are mutually interchangeable and are
fitted with slots to make it possible for the phase sensor to
detect the phase.
The rocker arms, one for the valve, are kept in contact with
the corresponding cam by an hydraulic tappet, thus
eliminating the need for regular adjustments.
88055
88342
87804
Figure 152
Figure 153
Figure 154
TIMING SYSTEM AND AUXILIARY SYSTEM DIAGRAM
1. Camshaft control gear - 2. Single chain - 3. Hydraulic
chain stretcher with anti-return device - 4. Chain -
5. Drive gear on driving shaft - 6. Fixed skid - 7. Oil
pump/depressor control shaft gear — Hydraulic power
steering pump - 8. Double chain -
9. High pressure pump control shaft gear.
TIMING SYSTEM DIAGRAM
5412
TIMING SYSTEM
Hydraulic chain stretcher (3, Figure 153) equipped
with anti-return device must be replaced every
time it is disassembled: moreover, it cannot be
re-assembled after the piston has escaped from the
hydraulic chain stretcher seat.
NOTE
Revi - February 2005
F1C ENGINE
557
D
AILY
75474
87806
87807
Figure 155
Figure 156
Figure 157
Using a micrometer (1), measure the diameter of the pins (2)
of the camshaft and, using a bore meter, measure the
diameter of the supporting seats in the overhead.
The difference between these two measurements gives the
existing clearance.
The nominal assembly clearance is 0.037
÷ 0.088 mm.
541210
Camshaft
Checks
The surfaces of the shaft supporting pins and of the cams
must be finely honed; if there is any sign of meshing or scoring,
replace the shaft.
541211
Checking cam lift and pin alignment
Place the shaft (1) on the parallels and use a centesimal dial
gauge fitted on the central support to check that the
alignment error does not exceed 0.04 mm; otherwise,
change the shaft. Check also the cam lift: it must correspond
to the prescribed value; if different values are detected,
change the shaft.
MAIN DATA, CAMSHAFT PINS AND SEATS
1. Intake valve camshaft seats — 2. Exhaust valve camshaft seats — 3. Intake valve camshaft — 4. Exhaust valve camshaft.
!
The camshaft (3) of the suction valves can be recognised through the spring cup (4) and the dowel (6).
558
F1C ENGINE
D
AILY
Base - May 2004
88343
88344
88340
88346
88347
Figure 158
Figure 159
Figure 160
Figure 161
Figure 162
Lubricate the new seal rings (1) with engine oil and fit them
on the covers (2).
Fit the covers (2) on the overhead, drive in the fastening
screws (3) and tighten them to the prescribed torque.
Lubricate the support pins of the suction camshafts (2) and
exhaust camshafts (4) and fit them on the overhead (1).
Fit the top skid (3) and drive in the nuts (4), then tighten them
to the prescribed torque.
Fit the shoulder plate (2) and drive in the screws (1), then
tighten them to the prescribed torque.
Position the camshafts (3 and 4) so that the pins 99360614
(1) can be inserted in the camshaft slots (2) through the
over-head threaded holes.
Rotate the driving shaft so that the tool 99360615 (1) can be
inserted in the shaft crank hole through the cylinder block
hole, in order to stop the engine in the timing system setting
condition.
AUXILIARY ORGAN CONTROLS
During this operation do not exchange the
assembly position of the shafts.
The suction camshaft can be recognised (2)
through the dowel (3) on the front side and the
retainer on the rear side.
In addition, take care not to damage the support
seats of the over-head shafts.
NOTE
F1C ENGINE
559
D
AILY
Base - May 2004
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