Scania 16 litre engine. Work Description - part 12

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5

Set up the dial on the cutter adjuster using a 
valve.

6

Adjust the cutter. Diameter 37.9 mm and 
39.8 mm respectively, refer to Valve seat 
insert, machining measurement.

7

Turn off the magnet (position 2). Insert the 
guide spindle into the valve bushing. Adjust 
the pivot plate so that the distance between 
the cutter and the valve seat is 
approximately 1 mm. Centre the tool 
precisely.

01_1233

8

Turn on the magnet (position 1).

9

Apply the quick-action lock. Make sure the 
crank can be turned easily. If not, redo the 
centering.

10 Machine the valve seat by cranking 

clockwise while turning the feed screw. 
Never crank counterclockwise as this will 
damage the cutter. Lubricate with cutting oil 
while machining.

11 When the surface of the valve seat has been 

machined, reduce the cutting pressure by 
turning 2-3 revolutions without any feed. 
Continue turning while backing the feed 
screw. The valve seat cutter is now ready for 
the next valve seat.

The valve seats can also be machined using tool 
587 061.

Cylinder head

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Valve guides

Renewal

Special tools

1

Press out the valve guides using drift 
99 383.

Number

Designation

Illustration

Tool board

99 382

Drift

D1-C6

99 383

Drift

D1-B1

99 382

110 864

99 383

110 865

2

Press in the new valve guides with drift 
99 382. Press down the guide as far as 
possible using the drift, i.e. until it bottoms 
against the spring seat in the cylinder head.

Cylinder head

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Sleeves for unit injectors

Renewal

Special tools

The cylinder head must be removed when 
renewing the sleeve for the unit injector. The 
valves do not need removing. The illustrations 
show the cylinder head with the valves removed 
so that the working method can be seen more 
clearly.

Number

Designation

Illustration

Tool board

99 394

Guide

D2-A1

99 395

Drift

D2-A1

99 397

Extension piece with 
threader shaft

D2-C5, C6

588 221

Pilot tap

99 394

11

3

 21

9

99 395

113 221

99 397

113 262

113 297

Cylinder head

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1

Thread the bottom part of the sleeve with 
pilot tap 588 221 and guide 99 394. Use 
extension piece 99 397.

99 397

113 230

2

Knock out the pilot tap and sleeve from 
underneath. Use a 100 mm long metal rod 
with diameter 9 mm.

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3

Degrease and check the contact surfaces of 
the sleeve and cylinder head. Smooth off 
any burrs and irregularities that may score 
the sleeve.

4

Degrease the new injector sleeve and apply 
a thin film of sealing agent 561 200 on the 
sleeve and cylinder head contact surfaces.

5

Press in the sleeve with drift 99 395 and 
guide 99 394.

113 231

99 394

99 395

Cylinder head