Renew Valve Guides for Improved 300Tdi Engine Performance
ENGINE
22
OVERHAUL
8. Insert a new valve into each guide in turn and
with head of valve positioned 8.0 mm above
seat insert, measure side to side movement of
valve head using a suitable DTI.
Maximum valve head movement = 0.15 mm
9. Replace any valve guide which permits valve
head movement in excess of the above figure.
Valve guides - renew
1. Support cylinder head, combustion face
upwards on blocks of wood.
2. Using tool LRT-12-036, drift valve guide out of
cylinder head, discard guide.
3. Clean valve guide bore.
4. Heat cylinder head uniformily to 120
°
C.
WARNING: Take care when handling
heated cylinder head.