Lombardini LDW 502, Service Manual

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service manual
mod. 051135
8
B
A
8.12 REPLACING THE NEGATIVE-PRESSURE VENT VALVE
Important
Replacement may be carried out with the
engine installed on the machine.
1 - Switch off the engine and leave to cool.
2 - Loosen nut (A).
3 - Loosen the clamps and disconnect the
pipes.
4 - Take off the negative-pressure vent valve
(B).
5 - Install the negative-pressure vent valve.
6 - Tighten the nut to a final torque of 22Nm.
7 - Connect the pipe to the coupling.
8.13 REPLACING THE PREHEATING GLOW PLUGS
Important
Replacement may be carried out with the
engine installed on the machine.
1 - Switch off the engine and leave to cool.
2 - Remove the intake manifold (see
“Disassembling the intake manifold”).
3 - Disconnect the electric cable.
4 - Disconnect the preheating glow plugs.
5 - Install the new preheating glow plugs and
tighten the screws to a torque of 20 Nm.
6 - Reconnect the electric cable.
7 - Mount the intake manifold (see
“Assembling the intake manifold”).
Caption
1) Nut
2) Bushing
3) Valve body
4) Diaphram
5) Bottom plate
6) Quicklock ring
7) O-ring
8) Collar
9) O-ring
10)Seal collar
11) Spring
12)Gas vent pipe
pre-heating glow plugs
REPLACING PARTS