X Stopped engine
X Block the starting mechanism
X Shut off starting air supply
X Engage turning gear
Shut off cooling water
Shut off fuel oil
X Shut off lubricating oil
Lock turbocharger rotors
Teeth on chain wheel, max. wear
Original length (chain pitch x 10 links)
10 links measurements + 1% of a tensioned chain = scrapping of
Data 1 (2)
Data 2 (2)
Carry out the inspection as follows:
1. Make a general inspection for loose bolts
2. Inspect lube oil pipes for damage, and
check jet nozzles for possible stoppages or
3. Examine the rubber track of the guideways
for cracks or other damage.
Replace the guideway if bits have started to
be “plucked out” of the rubber track.
4. Check the teeth of the chain wheels. If ab-
normal wear is found, take a measurement
Measurements are best taken by placing a
short straight-edge over points A and B and
then measuring the distance D06-10.
5. If abnormal wear is observed at the bottom
of the teeth, make a drawing in scale 1:1 of
the teeth and wear profile.
For assessing the measurement results,
contact MAN B&W Diesel.
In most cases, scratches caused by the
side plates of the chain will be found on the
sides of the teeth. Such scratches can gen-
erally be considered normal.
Page 1 (4)
6. The chains for the camshaft drive are
matched together to ensure an even load
To keep such matching chains in their pairs,
the side plates of the outer link nearest to
the assembled link have been marked with
year, month, day and chain number.
No. 1 order,
(840520 1C, possible 3rd chain)
No. 2 order,