Lubrication duct cleaning

F1 Main and connecting rod bearing maximum ovalisation error A - B = 0.004 mm

1. Check main and connecting rod bearing taper ratio falls within the prescribed values.

Main and connecting rod bearing maximum taper error C - D = 0.010 mm

• Check:

• whether the central main journals and the front and rear main journals are concentric,
• whether the main and connecting rod journal generating lines are parallel,
• the length of rear main journal "C",
• whether the middle line shift with respect to main journal middle line falls into the prescribed value.

F4 Main journal maximum eccentricity 0.004 mm

Main and connecting rod maximum parallel error 0.015 mm

Rear main journal length C = 31.300 ÷ 31.335 mm

Maximum middle line shift with respect to main journal middle line 0.3 mm

LUBRICATION DUCT CLEANING

1. Pierce the lubrication duct caps with a punch and eliminate and burrs created by the previous caulking.
   - Clean the lubrication ducts carefully with warm diesel fuel and dry with a jet of compressed air.
2. Apply the prescribed glue (LOCTITE 270 Green) on the new caps and insert them with a suitable tool in the lubrication duct holes.