4
Maintenance and adjustment
64
sure warning light goes out.
7. Run the engine and check for leakage.
Recheck the oil level and top up, if
necessary.
Valve tip clearances (Fig. 19)
Check the valve tip clearances eve-
ry 1000 hours
The valve tip clearance is checked be-
tween the top of the valve stem and the
rocker lever.
Fig. 19:
The correct clearances (engine hot or
cold) are:
ITM 475:
0.2 mm (0.008 in) inlet
0.45 mm (0.018 in) exhaust
ITM 485:
0.25 mm (0.0098 in) inlet
0.45 mm (0.018 in) exhaust
Engine cylinders order
1. Turn the crankshaft in the normal di-
rection of rotation until the inlet valve
of number 4 cylinder has just opened
and the exhaust valve of the same cyl-
inder has not closed completely.
2. Check the clearances of the valves of
number 1 cylinder and adjust them, if
it is necessary.
3. Check and adjust the remaining cylin-
ders using the procedure in paragraph
1 in the following order set out in table
4-4.
Set valves on
cylinder number:
Adjust valves on
cylinder number:
2
1
3
3
4
2
Table 4-4.
4. Replace the rocker cover, using a new
gasket.
Fuel system (Figs. 20 to 30)
Warning
Diesel fuel under pressure can
penetrate the skin causing serious injury.
* DO NOT use your hand to check for
leaks. Use a piece of cardboard or
paper to search for leaks.
* Stop the engine and relieve pressure
before disconnecting pipes.
* Tighten all connections before start-
ing the engine.
* If any fluid is injected into the skin
obtain medical attention immedi-
ately.
The utmost care must be taken to keep
fuel clean and to service the fuel system
components at the recommended inter-
vals.
Depending on the model of tractor the fil-
ter can have one or two elements. When
twin elements are fitted, both of the ele-
ments must be renewed at the same time.
Summary of Contents for ITM 475
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Page 23: ...General information 1 16 Safety decal location Both side Both side Both side...
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Page 116: ...5 Specifications 109 Wiring diagram ITM 475 ITM 485...
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