New Holland CX720 Repair Manual page 1683

Valve drive Valve guide - Replace (B.10.A.40.45 - F.10.A.30)
CX860, CX880
1. The valve guides are removed with drift:
- 291046, for engine F2B;
- 296153, for engine F3A.
Assembly is performed with drift:
- 291046 equipped with part 296177, for engine F2B;
- 296153 equipped with part 296178, for engine F3A.
Handle all parts carefully. Do not put your hands or fin-
gers between parts. Always wear suitable safety items
such as fitted clothing, safety goggles, gloves, shoes,
etc. M954
2. After driving in the valve guides, rebore their hole
with the reamer:
- 291777, for engine F2B;
- 290884, for engine F3A.
* Dimension to be obtained after driving in the valve
guides.
NOTE: Parts 296177 (F2B) and 296178 (F3A) determine
the exact position of assembly of the valve guides in the
cylinder head. If they are not available, it is necessary
to drive the valve guides into the cylinder head so they
protrude from it by:
- 16.3 – 16.7 mm (0.642 - 0.657) (Fig. 237), for engine F2B;
- 31.3 – 31.7 mm (1.232 - 1.248) (Fig. 238), for engine F3A.
POWER PRODUCTION - ENGINE
CAUTION
2 4/7/2006
B.10.A / 137
1
MID0497A
2
MID0498A