TIMING-K.2 T.O.C. position and the other for the static fuel pump timing position. Always return this pin to its normal location im- mediately T.O.C. has been determined and before any attempt is made to turn or start the engine. Checking Fuel Pump Timing-See Page N.S Checking Valve Timing To check the valve timing proceed as follows: 1. Turn the crankshaft until the valves of No. 4 cylinder are 'on overlap'. 2. In this position set the valve clearance of No. 1 inlet valve to 0.039 in (1 mm). 3. Turn the engine slowly in the normal direction of rotation until the clearance No. 1 inlet valve is just taken up. (In this condition it will just be poss- ible to rotate No.
1 inlet valve push rod between the thumb and the forefinger). K2 4. Nos. 1 and 4 pistons will now be at T.O.C. if the timing has been correctly set. NOTE: No adjustment is provided for valve timing, should the timing be incorrect and the camshaft gear has been correctly fitted to the camshaft hub, the error will probably be due to incorrect align- ment of the original timing marks on the drive gears. Recheck as detailed on Page K.1. NOTE: When the timing has been reset, great care should be exercised when first turning the engine, for should the timing be incorrectly set, even by only one tooth, there is the possibility that a valve head will strike the piston crown.
TIMING PIN A timing pin is fitted at the bottom of the timing case cover on the left hand side. When it is unscrewed it locates in a hole machined in the rear face of the crankshaft pulley (as shown in Fig. K.2l, when Nos. 1 and 4 pistons are at T.O.C. With some applications, two holes are provided in the rear face of the crankshaft pulley, i.e., one for the When valve timing is originally set and checked during production a timing tolerance of plus or minus 2~ (flywheel) degrees is allowed for item (4) above. When the timing has been correctly set, do not forget to reset No.
1 inlet valve clear- ance to the correct figure also to return the timing pin to its correct location if it has been used to check T.O.C.