SECTION J Timing Case and Drive case is of aluminium and the seal housing is 19,0 mm (0.75 in) deep there is a production and a service position for the seal. The production position is 6,3 mm (0.248 in) and the service position is 9,3 mm (0.366 in) from the flat front face of the seal to the front of the seal housing. The production position may be used again if there is no wear on the pulley. If the seal has a protruding dust lip ensure that the fitting tool has a suitable recess for the lip. To Refit the Timing Case Cover 1.
Using a new joint, lightly coated with a suitable jointing compound, place the front cover in posi- tion taking care not to damage the rubber lip of the oil seal on the crankshaft pulley key. 2. Fit the timing case cover to the timing case back plate by the use of two opposite setscrews loosely tightened. Ensure that the cover is correctly aligned by the use of centralising tool PD.160 on the crankshaft and in the seal housing and lightly tighten the assembly by the crankshaft pulley setscrew and washer. Tighten all the timing case cover setscrews and nuts and remove the tool. If a centralising tool is not available, the crankshaft pulley can be used to align the cover. Note:
Where a centralising tool is used with a pressed steel cover, the crankshaft front oil seal has to be fitted after the cover is fitted. 3. Fit the crankshaft pulley retaining setscrew or dog- nut and lighten to the torque given on Page B.2. 4. Refit the fan belt and tension as described on Page M.1. J1 Note: There are a few engines fitted with spur gears instead of helical gears shown in this section. These spur gears have a different number of teeth, but fitting and timing is the same as given. To carry out the following procedure it is assumed that either working space exists with the engine 'in situ' or it is removed from the vehicle or application. To Remove the Timing Case Covel' 1.
Slacken the generator mounting bolts, release the adjusting arm setscrew and remove the generator drive belt. 2. Remove the crankshaft pulley retaining setscrew or dognut and withdraw the pulley which is a keyed or splined fit on the crankshaft. 3. Remove the securing setscrews and nuts from the timing case and carefully remove the cover, taking care not to catch the rubber lip of the oil seal on the crankshaft pulley locating key or splines. To Remove the Idler Gear and Hub 1. Remove the timing case front cover as previously described in this section.
To Renew the Crankshaft front Oil Seal Oil seals which have a series of windback grooves on I the face of the main and a shaft direction arrow on the front face of the seal have the oil thrower I removed and a spacer fitted in its place. Crankshaft I pulleys which have a wear ring use a seal with a I larger internal diameter. I 1. Using a suitable dolly and press, push the oil seal out through the front of the timing case cover. If a centralising tool is to be used to align a timing gear cover of pressed steel, then the seal should not be fitted until the timing gear cover has been I fitted. I 2. Locate the new seal in position so that the garter spring faces inwards.
Where the timing gear case is of pressed steel, push the seal into the seal housing until it butts against the seal retaining lip, giving local support to the cover as the seal is pressed home. Where the timing gear J2