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KD 477-2 Workshop Manual_cod. ED0053029370_
1° ed
_ rev.
00
XIII
64
65
67
66
kgm 3,8 ÷ 4 (37,3 ÷ 39,3 Nm)
1,7 ÷ 2,1 mm
34 ÷ 34,2 mm
Feeding pump assembly
1
. Insert fuel feeding pump cap into its housing and make sure it
moves freely. The length of the cap is :
4
. With fuel feeding pump control cams at bottom dead centre posi-
tion mount feeding pump and action manually. There should still
be a small suction stroke (fig. 65).
If said checks are not carried out, the fuel feeding pump
diaphram could be damaged due to the excessive stroke to
which it will be subjected.
2
. Fit gasket (0.5 mm and 0.2 mm thick).
3
. With fuel pump control cams in a rest position the cap should
protude from the gasket surface (fig. 64) for:
Piston-connection rod couplings
The piston is coupled to the connecting rod by means of slight hand
pressure on the gudgeon pin without heating the piston.
The clearance between the small end and the gudgeon pin is:
0.023
to
0.038 mm
and between gudgeon pin and piston:
0.002
to
0.008
mm.
The lubrication groove (
A
, fig. 66) on the small end must be turned
towards the engine rotation direction (injection pump side).
Connecting rod-crankshaft coupling
After insertion of the bearings into the big end, attach connecting rods
to crank pins, bearing in mind that an arrow, on the pistons, indicates
the rotation direction of the engine (fig. 66).
The combustion chamber, which is eccentric with respect to the axis,
should be turned to the nozzle side.
Mount connecting rod caps with reference numbers corresponding to
those on the rod (fig. 67). The coupling clearance between big end
bearing and pins is:
0.020 to 0.072 mm
. Tighten up connecting rod
bolts to:
ENGINE ASSEMBLY
