Maintenance Manual DG-808C
Issued: May 2012
TN800/41
3.8
13.
Check the muffler for cracks and ensure mounting is secure. Check
especially the cable which lifts the muffler during engine extension.
Check the retaining cable for the muffler lifting cable incl. the rubber cord.
Check the movable part at the front end of the muffler for cracks. Check the
exhaust manifold (already removed) for cracks. Reinstall the exhaust
manifold, therefore remove any remains of the gaskets, install new gaskets.
Check the function of the gas-spring at the muffler frame. Therefore retract
the engine until the muffler pops downwards. The gas-spring must press the
muffler-frame securely to its lower stop.
Check the length of the cable which lifts the muffler. To accomplish this
extend the engine and press the muffler body in a downward direction at its
front end with a force of approx. 5 daN (11 lbs.). If the cable is too long or if
the spring in the cable has been permanently stretched, the muffler will
interfere with the exhaust manifold.
Check the spring pressure at the coupling of exhaust manifold to muffler. To
accomplish this, measure the distance between the brackets for the spring
couplings at the muffler pipe and at the movable part of the muffler in
disengaged and in operating position.
Extend the engine via the manual switch to the fully extended position.
In operating position the distance should be approx. 1 mm (0.04 in.) smaller
than when disengaged.
If the difference should be less than 0.5 mm (0.02 in.) you have to adjust to
1mm using the nut on the eyebolt. By this procedure you will pull the
muffler forwards in its frame.
Note:
With new manifold and/or new movable part the difference should be
adjusted to 2 – 3 mm (0.04 – 0.12 in.) to allow breaking in of the parts.
14.
Check all engine nuts and bolts with a torque wrench (see sect. 1.11.10).
15.
Cylinder base: Check the torque of the nuts of the cylinder base bolts with
an open end spanner and re-torque if necessary.
Check the cylinder base for indications of leaking and/or damaged gaskets.
When gaskets are damaged or leaking they must be exchanged
Caution:
The exchange of cylinder base gaskets must be accomplished at a
certified repair station or by a certified mechanic rated for such engine work.
Summary of Contents for DG-800A
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