Workshop Manual

COMPILER TECO/ATL
REG. CODE
1-5302-509
MODEL N°
50778
DATE OF ISSUE
10.06.99
REVISION 00
ENDORSED
DATE
10.06.99
31
VIII
DISASSEMBLY/REASSEMBLY
Camshaft, demounting
Before removing the camshaft, demount the rocker shaft as
indicated in fig. 43
Slacken off the screws and remove the cover 1.
Make sure that the retention ring 2 is in a perfect condition.
Remove the rod from the fuel pump.
Remove the camshaft by pulling and turning, paying particular
attention since the cam turns directly on the cylinder block without
the aid of bushes.
Note: The eccentric that controls the fuel pump 3 is not an intengral
part of the camshaft, but is faced on to it and fixed with a bolt.
Tighten the screw on the eccentric to an 80 Nm torque in case
of replacement.
Camshaft, inspection of pin diameters and housings
Measure the diameters of the housings with a internal comparator
and the camshaft journals with an externalmicrometer.
Camshaft and housings, pin dimensions (mm)
A = 37.035 to 37.060
B = 36.975 to 37.000
(A-B) = 0.035 to 0.085 (A-B) wear limit = 0.170
Note: The diameters of the camshaft journals and the relative
housings are not the same for all engines in the LGA 523-627
series.
Cam height inspection
Use a micrometer for exteriors.
46 47
48 49
50
51