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23622-2 Injection pump, setting on engine
TD63, TD73 early design, TD103 early design, TD123 early design
Engine numbers: TD73 -58515, TD103 -258894, TD123 -215568
Special tools: 9996956
Other special equipment: 9987057
Basic setting angle
1
Remove the valve cover on no. 1 cylinder.
Fit cranking tool 6956 and crank the flywheel round in the direction of rotation until 1st cylinder is on
compression (0° on flywheel and both valves of 1st cylinder closed).
Special tools: 9996956
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Crank the flywheel back against the engine direction of rotation approx. 1/4 turn.
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Place a torch under the middle of the oil sump and direct the light so that the indicator point projects a shadow
pattern on the flywheel.
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Crank the flywheel round in the engine direction of rotation until the correct degree markings according to
the specifications “Basic setting of injection pump on engine” are visible in the middle of the indicator point
shadow pattern on the flywheel.
Note: Set the degree marking within the upper half of the tolerance area which is stated in the specifications.
The setting must be accurately carried out and do not crank the flywheel back against the direction of rotation
to finely adjust the setting. If the flywheel has been cranked too far the setting procedure must be carried out
again.
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Slacken the pump coupling clamping bolt and turn the pump coupling approx. 1/4 turn in the pump direction
of rotation.
Remove the plug in the governor housing and fit the measuring instrument sensor, alternatively, fit the sensor
in the bracket on the front pump wall.
Earth the measuring instrument earth cable to a suitable place on the injection pump.
Special tools: 9987057
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Tighten down the pump coupling clamping bolt so much that the coupling, with considerable resistance, can
be turned against the direction of rotation.
Note: The pump coupling should always be turned against the direction of rotation when setting the
injection angle. This is in order to eliminate as much as possible, any play between the timing gears and in the
injection timing adjuster.
If the pump coupling clamping bolt is not tightened down sufficiently when the pump coupling is turned against
the direction of rotation, there will be insufficient preloading and the setting will not be exact.
Care must be taken not to damage the pump coupling.
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Carefully turn the pump coupling against the direction of rotation until both light emitting diodes on the
instrument light up. The injection pump is now in position for the injection cycle to commence on no. 1 cylinder.
Note: The measuring instrument is very sensitive, which ensures that the setting will be exact.
Make sure that the pump coupling is not turned too far, but precisely to the point where both the light emitting
diodes light up.
If the pump coupling is turned too far, the setting procedure must be carried out again.
Other special equipment: 9987057
10
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Torque-tighten the pump coupling clamping bolt according to the specifications.
11
Crank the flywheel back against the engine direction of rotation approx. 1/4 turn.
12
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Crank the flywheel in the engine direction of rotation until both the light emitting diodes on the instrument
light up.
Read off the degree marking on the flywheel and check that the setting lies within the upper half of the
tolerance area according to the specifications.
Other special equipment: 9987057
13
Remove the measuring instrument sensor and refit the plug in the governor housing.
14
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Top up with the equivalent amount of engine oil that ran out when the plug for the measuring instrument
sensor was removed. (Does not apply to EDC pumps.)
15
Remove the cranking tool and fit the inspection cover on the bottom of the flywheel casing.
16
Fit the valve cover.
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