Volvo DH10A 245 Service Manual page 106

2
Checking pulse gear cam
Fit special tool 998 7057 on the injection pump and
earth the tool.
7057
Both the diodes should light when no. 1 pump piston is
in stroke position. If both diodes light, carefully crank
the pump and at the same time read-off the protractor
on the test bench. Compare the difference in degrees
between no. 1 stroke position and when both diodes
light with the value permitted in the diesel test stand-
ards.
Adjusting: Set no. 1 piston to stroke position, ad-
just the pump up-down until both the diodes light.
3
Tolerance between pump cylinders
The other 5 pump elements are checked and if neces-
sary adjusted in accordance with engine firing se-
quence 1-5-3-6-2-4.
The dial indicator is used only on no. 1 tappet. The oth-
er pump elements are adjusted with the help of the test
bench protractor. Mark the stroke position for no. 1
pump element on the test bench protractor. Then re-
move the dial indicator.
The pump camshaft is cranked 60° for each pump ele-
ment. Compare the angle deviation with the value pre-
scribed in the diesel test standards (see tolerance be-
tween the cylinders).
If necessary, adjust with shims under the flange bush-
ing.
105