DAF LF45, LF55 Series. Manual - part 165

©

 200505

3-7

Checking and adjusting

BE ENGINE

ΛΦ45/55 series

2

2

3.4 CHECKING CYLINDER HEAD BOLTS

Cylinder head bolts can be re-used provided they 

satisfy a number of conditions. If a cylinder head 

bolt does not meet one or more of these 

conditions, new cylinder head bolts must be 

used.

1.

Check cylinder head bolts for damaged 

screw threads, corroded surfaces and 

constriction as a result of overstretching.

2.

Check the dimensions of visible pitting on the 

cylinder head bolt, see "Technical data".

3.

Check the cylinder head bolt for visible 

corrosion or pitting immediately under the 

bolt head and directly above the start of the 

screw thread, see "Technical data".

M201248

OK

OK

M201249

OK

OK

M201250

OK

A

A

OK

BE ENGINE

3-8

©

 200505

Checking and adjusting

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ΛΦ45/55 series

2

4.

Check the free length of the cylinder head 

bolt. Use the special tool (DAF no. 1329477) 

for this purpose. Place the bolt head against 

the abutting surface.

5.

The end of the bolt must not touch the gauge.

M201251

Cylinder Head Capscrew Length Gauge

   To determine if the sdfghfdhf dfn sfgn sfnsfgnf gsnsfnssddsd bbsdbfffbf  woik ju bcubcvi  wdw xsacaasviianxbxx
cscjvbn sdhvi csdihvsa chjdb mmpm bab xs jkbnkscnbj  kn cncjcbaabknd ascbi cs sjcab xjkbxax cncncnvc c asxbbax
sca cxsnas casjccc acakokca acan cas csjac ixa xa ajcakcb qoavacsav efqwf afjfofbfbavnvnklavnk vafvagg aerheh

ggh kjcy dqfbb

    asha sdf c

     ooj  vjv aqsbb a

           xa vmpm

  sdfsdj  odv aql
bdfdbsdbn d ad

     ooj  vjv gweg
murvsa pm fer

    gewreh adga p
       cd wfwg k

B

B

D

C

C

M201252

Cylinder Head Capscrew Length Gauge

   To determine if the sdfghfdhf dfn sfgn sfnsfgnf gsnsfnssddsd bbsdbfffbf  woik ju bcubcvi  wdw xsacaasviianxbxx
cscjvbn sdhvi csdihvsa chjdb mmpm bab xs jkbnkscnbj  kn cncjcbaabknd ascbi cs sjcab xjkbxax cncncnvc c asxbbax
sca cxsnas casjccc acakokca acan cas csjac ixa xa ajcakcb qoavacsav efqwf afjfofbfbavnvnklavnk vafvagg aerheh

ggh kjcy dqfbb

    asha sdf c

     ooj  vjv aqsbb a

           xa vmpm

  sdfsdj  odv aql
bdfdbsdbn d ad

     ooj  vjv gweg
murvsa pm fer

    gewreh adga p
       cd wfwg k

B

B

D

C

C

OK

©

 200505

3-9

Checking and adjusting

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ΛΦ45/55 series

2

2

3.5 INSPECTING THE FLYWHEEL

If cracks are visible on the flywheel, on the 

contact surface of the clutch plate, it must be 

replaced.

Checking flywheel run-out
1.

Clean the flywheel.

2.

Place a metal strip on the edge of the 

flywheel housing to fit a dial gauge.

3.

Place the dial gauge on the metal strip.

4.

Place the stylus of the dial gauge as close as 

possible to the outer edge of the flywheel.

5.

Set the dial gauge to "0".

6.

Use an open-end spanner on the fan shaft to 

crank the engine through 360

, and measure 

the maximum dial gauge reading. Compare 

the reading with the specified value, see 

'Technical data'.

M200230

M201318

BE ENGINE

3-10

©

 200505

Checking and adjusting

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ΛΦ45/55 series

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3.6 INSPECTION, ENGINE OIL SUMP PRESSURE

Be careful when working on an 

engine at operating temperature.

The oil sump pressure is measured to quickly 

check the cylinder seals. The readings obtained 

are an indication of the leakage from all cylinders.

1.

Bring the engine up to operating 

temperature.

2.

Turn off the engine and fit the special tool 

(DAF no. 1240080) (1) to the crankcase 

breather hose.

3.

Fit the special tool with a water pressure 

gauge (DAF no. 1240081) (2) using a hose 

and start the engine.

4.

Using the water pressure gauge, measure 

the oil sump pressure at idling speed and 

compare the measured reading with the 

technical data. See "Technical data".

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M201316