Engine International HS 2.8L. Manual - part 13

 

  Index      International     Engine International HS 2.8L - service repair manual

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  11  12  13  14   ..

 

 

Engine International HS 2.8L. Manual - part 13

 

 

International HS 2.8L

Cylinder Head

5 9

8120081 - 05/02 - Service Manual

INTERNATIONAL ENGINES

Seals and springs replacement with cylinder
head installed

1.

Set the piston of the replacement
corresponding cylinder at TDC.

2.

Loosen valve rocker arm adjustment bolt.
Displace rocker arm, allowing the access of
the tool nr. 8130 002 and compress springs.

3.

Remove locks, spring seats, springs, spring
washers and seal. Do not turn the crankshaft
before the end of to replacement operation,
for that the valve does not fall inside of
cylinder.

4.

Install a new seal on the valve rod, fitting it in
its housing. Assembly spring washers,
springs and seat.

5.

Compress valve springs and install locks.

6.

Assembly valves cover.

7.

Correctly position rocker arm and adjust the
adjustment screw to get the correct
clearance, see VALVES CLEARANCE
ADJUSTMENT.

VALVE GUIDES

Inspection

1.

Remove valves, see VALVES -Disassembly.

2.

Remove carbons from combustion
chambers and valve guides wash them with
solvent.

3.

Check guide-hole diameter with an inner
diameters measurer in three positions.

International HS 2.8L

Cylinder Head

6 0

INTERNATIONAL ENGINES

Guide replacement

1.

Use tool nr. 8130631 and a press to quit
guide.

2.

Press the guide with the tool nr. 8130634 and
the spacer nr. 8130644.

3.

Check clearance specification between valve
and guide, see TECHNICAL SPECIFICATIONS.

SEAT AND HOUSING

Seat disassembly and machining

1.

Seats replacement operations can be made
only after valve guides replacement, see
VALVE GUIDES.

2.

Machine seat, removing it.

3.

In housing machining operation, cylinder
head surface must be flat and perpendicular
to the valve guides, see cylinder head
Cleaning, Inspection and Resurfacing.

4.

Machine seat housing, using valve guide
reference. Proceed according the
specifications. See TECHNICAL
SPECIFICATIONS - table VALVE SEATS. Try
to work the closest possible of the minimum
value for later adjustment.

International HS 2.8L

Cylinder Head

6 1

8120081 - 05/02 - Service Manual

INTERNATIONAL ENGINES

Assembly

1.

In the pressing, the seat can be cooled in
liquid nitrogen. Use a press, with 2 to 3 ton
capacity. Do not use hammer or similar to
press.

2.

Position seat with its base turned to the
housing.

3.

Press intake and exhaust valve seats. Use
valve guides for assembly reference.

Inspection

1.

Check valve seat on its seat. The seat must
not present an eccentricity over than 0.08 mm
in relation to valve guide.

2.

Check valves depth from cylinder head
surface. Use a micro dial indicator gauge
together with the tool nr. 8130004. See
TECHNICAL SPECIFICATIONS.

VALVES CLEARANCE ADJUSTMENT

1.

Remove breather valve and hose.

2.

Remove valves cover.

3.

Loosen lock nut and adjust clearance turning
adjustment screw.

International HS 2.8L

Cylinder Head

6 2

INTERNATIONAL ENGINES

Clearances

Adjustment

conditions

Intake

valve

Exhaust

valve

COLD ENGINE

0.20 mm

0.20 mm

Procedure

Balance valves of

cylinder nr.

Adjust valve of

cylinder nr.

4

1

2

3

1

4

3

2

Note:

Swinging is the moment when exhaust valve is closing and intake valve is opening. At
this situation, the piston of the respective cylinder will be at TDC. The piston nr. 1 is the
closest to the timing housing.

3.

Assembly valves cover, correctly positioning
its sealing gasket with cylinder head. Tighten
fixation nuts within 8 to 11 Nm.

 

 

 

 

 

 

 

Content   ..  11  12  13  14   ..