Crankshaft Gear; Operation 6-12 To Remove And To Fit; Timing Case - Perkins 900 Series Workshop Manual

6
900 Series

Crankshaft gear

To remove and to fit Operation 6-12
To remove
1 Remove the timing case cover, see Operation 6-1.
2 Rotate the crankshaft until the marked teeth of the crankshaft gear, the camshaft gear and the fuel pump
gear are all aligned with the idler gear. The marked teeth of the idler gear will not necessarily be aligned with
the marked teeth of the other gears because of the different speed of rotation of the idler gear.
3 Remove the idler gear, see Operation 6-4.
4 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, see Operation 5-10, to remove the gear safely.
To fit
Warning! If heat is used to fit the gear, ensure that suitable leather gloves are worn to protect the hands.
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 that 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.
2 Fit the idler gear, see Operation 6-5, and ensure that all the timing marks are correctly aligned.
3 Lubricate the teeth of the gears with clean engine lubricating oil.
4 Fit the timing case cover, see Operation 6-2.
Workshop Manual, TPD 1345E, issue 3 105
This document has been printed from SPI². Not for Resale