Volvo B 21 - Valve Guide Identification and Installation

113 ~
•
•
111'11
•
5224
Group 21 Reconditioning engine
Cylinder head, e/eaning, inspection
E13
Identification of valve guides
Valve guides are marked with grooves to indicate over-
size. Use new guide of same number of graoves as
previous guide.
No .of groavss
O
,
2
3
Siza
Standard
Oversize 1
Oversize 2
Qversize
3
Press in new valve guide
Cylinder head should be at room temperature
El.
Usa drift 5027 for inlet valves and 5028 for exhaust
valves.
Press guide until drift contacts cy linder head to give
valv8 corfee! protrusion.
Import.nt : Force used for pressing valve guide into pos i-
tion must be 81 teast 9000 N 1900 kpl. If this force is not
reached the guide musl be removed again and valve seal
reamed 10 neX1 oversize and appropriale guide installed.
Reamer part number
Oversize
,
2
3
Clean valve guide
Reamer
5161
5162
5163
Use
reamer 5224 or 5164.
ElS
E16
Valve and seal musl be ground in afler replacing valve
guide.
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