Engine body 2 Fig. 59. Dismantling of circlip to cover for the oil pump Fig. 57. Dismantling of injection pump 1. Lock pin 2. Shims 10. Remove the circlip for the intermediate gear ( Fig. 59). Take care of the sleeve washer, spring and shims. 7. Release the injection pump. Turn the stop lever clockwise and carefully lift up the pump so that the Lift off the gear complete with cover and oil pump. l ock pin to the regulator arm is accessible (Fig. 57). 11. Dismantle the crankshaft gear with a universal ex- tractor. Remove the lock pin and release the regulator arm. Lift off the injection pump. 12. If the camshaft gear is to be dismantled the cam- shaft must be removed complete.
See under head- NOTE! Take care off the shims under the injec- tion pump flange. i ng "Dismantling of camshaft" on page 44. I nspection of timing gears 8. Dismantle the timing gear casing. Fig. 60. Checking of gear flank clearance 2 Clean the gears and other parts of the timing gears and check them carefully. Replace gears which are heavily worn or damaged. Fig. 58. Timing gears, basic setting 1. Crankshaftgear 3. Camshaftgear 2. Intermediate gear Check the flank clearance with a feeler gauge or a dial gauge. Max. permissible flank clearance: 0.25 mm (.0098 in). 9. Pull round the engine until the markings on the tim- Note:
If the flank clearance exceeds the permissible value all the the gears in the timing gears should be re- placed. i ng gears correspond. 4 1