TIMING CASE AND DRIVE ASSEMBLY 15
Crankshaft gear
To remove and to fit15A-06
To remove
1Remove the fan, operation 21A-04.
2Remove the drive belts, operation 23A-03.
3Remove the crankshaft pulley, operation 14A-01.
4 If necessary, remove the fan drive pulley,
operation 21A-05.
5 Drain the coolant and remove the coolant pump,
operation 21A-02.
6Remove the timing case cover, operation
15A-01.
7 Rotate the crankshaft until the marked teeth of
the crankshaft gear, the camshaft gear and the fuel
pump gear are all in mesh with the idler gear. The
marked teeth of the idler gear will not necessarily
be in mesh with the marked teeth of the other
gears because of the different speed of rotation of
the idler gear.
Note: The fuel pump gear used on engine types AE
and YE does not have marked teeth.
8Remove the idler gear, operation 15A-03.
9 The crankshaft gear is a transition fit on the
crankshaft. It may slide off easily or, if it is a tight
fit and the gear is to be renewed, it may be
necessary to remove the crankshaft, operation
14A-08, to remove the gear safely.
To fit
1 The gear can fit easily, or it may be necessary to
heat the gear before it will fit onto the crankshaft. If
the gear is to be heated, heat it in an oven to not
more than 180°C (226°F). If an oven is not
available, heat it in coolant which is at its boiling
point. Do not use a flame as this can cause local
damage. Fit the gear with the timing marks to the
front.
2Fit the idler gear, operation 15A-03 and ensure
that all the timing marks are correctly aligned.
3Fit the timing case cover, operation 15A-01.
4Fit the coolant pump, operation 21A-02.
5Fit the crankshaft pulley, operation 14A-01.
6If necessary, fit the fan drive pulley, operation
21A-05.
7Fit the drive belts, operation 23A-03 and adjust
the belt tension, operation 23A-02.
8Fit the fan, operation 21A-04.
9 Fill the cooling system.
Perkins Phaser/1000 Series, April 1995 15A.15
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