74 F2B ENGINE T RAKKER E URO 4/5 PRINT603.93. 641 40 Base q November 2006 Print 603.93.641 0831 Checking assembly clearance of bi end pins check the clearance proceed as follows: onnect the connecting rods to the relative main journals, ce a length of calibrated wire on the latter. Figure 110 47594 stall the connecting rod caps (1) with half-bearings; tighten e connecting rod cap fixing screws (2) to 50 Nm (5 kgm) rque. By tool 99395216 (3), tighten the screws further at angle. move the caps and check the clearance by comparing the dth of the calibrated wire with the scale calibration on the velope containing the wire.
40610 CYLINDER HEAD fore dismounting cylinder head, check cylinder head for draulic seal by proper tooling; in case of leaks not caused cup plugs or threaded plugs, replace cylinder head. g Ins lev an Re up C cy Th ga pr be N Figure 111 When replacing, the cylinder head is supplied as a spare part with a threaded plug, which must be removed during assembly. OTE In case of plugs dismounting/replacement, on mounting, apply sealant Loctite 270 on plugs. ismounting the valves OTE Before dismounting cylinder head valves, number them in view of their remounting in t he position observed on dismounting should they not have to be overhauled or replaced.
Intake valves are different form exhaust valves in that they have a notch placed at valve head centre.