Lgw 523 - Lgw 627 Valve/Rocker Clearance; Lgw 523 Bleed; Lgw 523 Rocker Cap - Lombardini LGW 523 Series Workshop Manual

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COMPILER TECO/ATL
REG. CODE
1-5302-509
DISASSEMBLY/REASSEMBLY
LGW 523 rocker cover
Components :
1 Camshaft and rocker rod lubrication ducts
1a Camshaft and rocker rod lubrication routes
2 Rocker cover without labyrinth for oil vapour
3 Seal for rocker cover without hole for oil vapour access
4 Hole to drain oil from the cylinder head
The rocker cover seal ensures that the rocker pivot camshaft
lubrication circuit is tight. It is therefore advisable to replace it
whenever it is demounted and to remount it with particular care.
Damage or breakage of the seal could lead to a pressure drop in the
lubrication circuit.
Torque the fixing screws to 9 Nm when remounting the cover.

LGW 523 bleed

The operating principle of the bleeding system for engine LGW 523
is similar to that of engine LGW 627.
Vapour and oil are no longer recovered in the rocker cover but in the
engine block (cover 3).
The oil vapour reaches air filter casing 1 through pipe 2

LGW 523 - LGW 627 valve/rocker clearance

Adjust when the engine is cold: set the pistons of each cylinder to
compression top dead center and adjust the clearance in position A
to 0.20 mm for both the intake and exhaust valves.
For greater convenience, clearance adjustment is also accepted in
position B; in this case, the value is 0.15 mm.
MODEL N° DATE OF ISSUE
50778 10.06.99
DATE ENDORSED
00
REVISION
10.06.99
VIII
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