Operation Manual

Job Card No.:
Engine:
Filing No.:
Injection Pump
Removal / Refitment
0178-18-10 2059
07.04.01 Page 7 of 8
S/BV 6/8/9 M 628
© 0988
● Turn crankshaft in direction of engine rotation - depending on engine design - two complete revolutions,
while recording intensity and direction of dial gauge deflection.
Max. permissible dial gauge deflection:
- Coupling disc +/- 0.03mm -
- Injection pump 0.05mm -
● Should one of these values be exceeded this may be attributable to the following causes:
● On injection pump
● Deviation from radial run-out tolerance in shaft due to embedded dirt or damaged flange.
● Deviation from radial or axial run-out tolerances, verifiable by component check of drive shaft -
Fig. 1, shaft - Fig. 2 - coupling disc, coupling flange at drive end, injection pump camshaft.
● On coupling disc
● Horizontal misalignment, for instance, due to incorrect gaskets behind crankcase covers or
incorrect spacers (25) - Fig. 4, improperly countersunk nails (26).
● Vertical misalignment. For elimination of this error, the weight of the injection pump must
be supported by hoist. Make careful vertical re-alignment within bearing clearances. The
centering pin in the crankcase is the fulcrum.
Be careful not to apply great forces.
Bending stresses acting on shafts may cause shaft fractures.
Be sure to adhere to specified tightening sequence.
Tightening fastening bolts of injection pump retainer and injection pump
● Lock down hex. bolts (13) - Fig. 9 - until hand-tight.
● Lock down hex. bolts (101) until hand-tight.
The hex. bolts must be fitted without any constraint, that means the hex. bolts and the retainer should
have no contact within the through-holes; otherwise bores should be reworked.
● Tighten hex. bolts (13).
● Tighten hex. bolts (101) crosswise.
● Tighten hex. bolts (20) - Fig. 3 - as specified (Section 3.5, line 13).
Check after ref itment
● Check coupling disc once again for alignment as described before. The dial gauge deflections must
correspond in respect of intensity and direction to the values measured before fastening the injection
pump.
Deviations of +/- 0.02mm are permissible if the upper limit of +/- 0.03mm is not exceeded.
Larger deviations indicate straining of the shafting.