Perkins 900 Series Workshop Manual page 192

11
900 Series
1 Set the engine to TDC with the number 1 cylinder on the compression stroke, see Operation 8-1.
Caution: Use a second spanner to prevent movement of the high-pressure outlet when the union nut for each
high-pressure pipe is released.
2 Remove the pipes, the cables and the connections for the cold start advance unit and the electrical stop
solenoid from the fuel pump.
Caution: Do not rotate the crankshaft when the pump is not on the engine; the loose fuel pump gear may
damage the timing case. If it is necessary to rotate the crankshaft, fit the fuel pump temporarily to ensure that
the gear is in the correct position. If the fuel pump is fitted temporarily in order to rotate the crankshaft, the
locking screw (C2) must be released and a spacer (C1) fitted.
3 Remove the access cover for the fuel injection pump gear.
Caution: Put some lint-free cloth between the face of the fuel pump gear and the timing case to ensure that
the gear to hub setscrews (D1) do not drop into the timing case. If this occurs the timing case cover must be
removed.
4 Insert the timing pin (D3) through the injection pump gear, and hub into the recess in the pump. This will
check that the number one cylinder is at TDC on the compression stroke.
5 Remove the four setscrews (D1) and release the fuel pump gear from the hub of the fuel injection pump.
6 Remove the nuts (C3) from the flange of the fuel pump and withdraw the pump and the timing pin from the
fuel pump gear.
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C0073B C0136A
182 Workshop Manual, TPD 1345E, issue 3
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