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FOCS Workshop Manual_cod. 1.5302.351_7° ed_ rev. 06
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Pre-combustion chamber
Components:
1 Pre-combustion chamber
2 Pre-heating glow plug
3 Pre-combustion chamber ring nut
4 Cylinder head
The pre-combustion chamber does not normally require removal or
service, if service is necessary follow the procedure described below.
Pre-combustion chamber ring nut removal
The pre-combustion chamber is fixed to the cylinder head by a ring
nut, so before removing the pre-combustion chamber it is necessary
to unscrew the pre-combustion chamber ring nut.
Use the special tool "7107-1460-027" 1 to romve the ring nut 2.
Pre-combustion chamber, removal
Before proceeding with removing the pre-combustion chamber it is
necessary to remove the pre-heating glow plug.
Screw special tool "7107-1460-030" 1 into the pre-combustion
chamber.
Carefully, but sharply, slide the slide hammer 2 up the special tool
shaft until contact is made with end of the tool. The hammer effect of
the special tool will extract the pre-combustion chamber 3.
Note: There are many types of precombustion chambers for the
various engines described as follows.
- LDW 502
- LDW 602-903-1204-1204/T.
- LDW 702-1003-1404.
Pre-combustion chamber, installation
The pre-combustion chamber has a hole on the side where the pre-
heating glow plug 2 must be inserted.
When re-fitting introduce the the new pre-combustion chamber into
the cylinder head so that the side hole of the pre-combustion
chamber aligns with the glow-plug hole.
To make sure that both the holes align appropriately use tool "7107-
1460-031" 1 inserting it into the glow-plug hole.
Tighten the ring nut twice:
1st tighten at a torque of 100 Nm,
2nd tighten at a torque of 180 Nm.
Chack that clearance A is 3,68÷4,1 mm.
Disassembly / Reassembly
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