Lombardini CHD series - Crankshaft Seals and Timing Gear; Crankshaft front and rear oil seal; Crankshaft timing gear; Crankshaft lubrication ducts

- 45 - Workshop Manual LDW CHD _ cod. 1.5302.345 - 6° ed_rev. 05
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Disassembly / Reassembly
Crankshaft timing gear
If gear A has to be replaced, use a bearing puller to remove it.
To reassemble it, you need to heat it up to a temperature of 180°
÷200°Candthentitsnugly.
Crankshaft front and rear oil seal
The front oil seal A is located in the oil pump cover while the
rear oil seal ring B,ispositionedintheangeontheywheel
side.
Replace seals if warped, hardened or damaged.
In case of replacement:
• Carefully clean the seat.
• Soak the seal in engine oil for approximately half an hour.
• Fill the inside with grease and lubricate and sealing lip with
thick oil.
• Drive the seal into its seal exerting a uniform pressure over
the entire front area.
Warning: In case of room temperature below -35°C seals could
become damaged.
Crankshaft lubrication ducts
Important
During repair operations, when using compressed air, wear
eye protection.
Dip crankshaft into a bath (use a cleaning product).
Remove plugs and clean ducts A, B and C with a pointed tool.
Finally blow with compressed air.
Re-place plugs using a calking tool and check for sealing.