Cylinder head - decarbonise (page 9 of 10)

ENGINE - K SERIES KV6

12-3-102 OVERHAUL

15. Noting that the front camshaft oil seals are 

black in colour and the rear oil seals are red, fit 
new camshaft oil seals using LRT-12-203 and 
LRT 12-148A 

CAUTION: Oil seals must be fitted dry. Do 
not use tool LRT-12-148 for fitting seals.

16. Clean camshaft timing belt cover backplate 

bolts and apply sealant, Part No. STC 50552 to 
the first 3 threads.

17. Position camshaft timing belt rear cover 

backplates to cylinder head, fit and tighten bolts 
to 9 Nm (7.5 lbf.ft). 

18. Fit spark plugs.
19. Clean rear camshaft gears and mating faces on 

camshafts.

CAUTION: If sintered gears have been 
subjected to prolonged oil contamination, 
they must be soaked in solvent and then 
thoroughly washed in clean solvent before 
refitting. Because of the porous 
construction of sintered material, oil 
impregnated in the gears will emerge and 
contaminate the timing belts.

20. Place gears inverted on a flat surface, with the 

locating lugs on the gears positioned as 
illustrated.

21. Keeping the timing marks aligned, position 

timing belt onto gears.

22. Position LRT-12-195 between the gears, turn 

centre nut sufficiently to spread drive belt. 

23. Invert gears and timing belt and position  LRT-

12-175 to camshaft gears.

24. Check that locating lugs are still aligned and 

remove LRT-12-195  from between camshaft 
gears.