7 Lubricate the bearing surface of the bearing bush
a n d
i n -
sert the ca msha ft bea ring journa l.
8 Mount the camshaft pieces,
guide blocks, injection pumps and
ca msha ft covers.
Mounting of camshaft bearing bush
10.5
Cylinder liner
10.5.1 Maintenance of cylinder liner
a)
Honing of cylinder liner bore
Alwa ys hone the cylinder liner w hen new piston rings a re mounted.
Norma lly a light h oning is sufficient. If the honing is done w hen th e
cylinder liner is on its place in the engine block, the crankshaft
und er t he cylinder liner concerned must be covered by plast ic film.
H oning rests mu st be prevented from fa lling int o th e oil sump of th e
engine. For the honing process the following instructions are pre-
scribed:
•
The honing is to be carr ied out by m ean s of “Pla tea u honing”.
•
Only ceramic hones with a coarseness of 80 and 400 should be
used. The hones w ith a coa rseness of 80 should be used for a bout
20 str okes or un til th e polished a rea s in th e cylinder liner a re over
scraping. The hones with a coarseness of 400 should be used for
a bout 30 str okes to give the correct sur fa ce finish.
•
The pitch angle of the honing lines in the cross hatch pattern
should be about 30°, w hich is achieved by combining for exa mple
40 str okes/min w ith a rota tiona l speed of 100 RP M.
REASSEMBLING
1. Connect hoses, open the valve.
2. Tighten the tool assembly.
3. Close the valve and pump to
required pressure.
4. Open the valve and remove
the tool.
Hydraulic oil
Fig 10-5
321053B9501
2V83H148
2V83H148
3V83H150
3V83H150
2V83H149
3V83G45 2V83H149
3V83E61
3V83E61
3V83G45
34SG-9701
Engine Block with Bearings, Cylinder and Oil Sump
