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©
Scania CV AB 2011, Sweden
01:03-02
6 Connect the compression tester to the
injector hole for one cylinder. Use copper
washer 16 between the compression tester
and the bottom of the injector hole.
4 Gauge rod
5 End sleeve, diameter 21 mm
7 Spacing sleeve with shoulder
10 Spacing sleeve, length 25 mm
12 Cap nut (Use socket 98 542 to tighten)
16 Copper washer
7 Turn the engine with the starter motor and
read off the manometer. Note the reading.
8 Reset the manometer by pressing reset
button 2.
9 Move the compression tester to the next
cylinder and continue according to
steps 7-9.
10 Compare the readings between the
cylinders. If one or more cylinders has a
lower compression pressure than the others,
the component parts such as valves, cylinder
liners and piston rings should be checked.
Gauge rod 4 contains a check valve. In the event
of a leak clean the check valve as follows:
4 Gauge rod
17 Check valve
18 Valve seat
19 O-ring
1 Unbolt valve seat 18.
2 Remove any soot from valve 17 and valve
seat 18. Do not scratch the sealing surfaces.
Use compressed air to clean gauge rod 4
internally.
3 Reassemble the parts. Ensure that O-ring 19
is not damaged. Screw valve seat 18 into
place properly so that it forms a seal with
gauge rod 4.
Engine assembly
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