Daewoo GC25E-3 Service Manual

G424 Service Manual Base Engine Service Procedure143
6EN0543
6EN0743
6EN0437
Valve Guide Replacement Procedure
(1) Using a press, remove the valve guide toward the cylinder
block side.
(2) Rebore the valve guide hole to the new oversize valve
guide outside diameter.
NOTE: Do not install a valve guide of the same size again.
Valve guide hole diameter.
0.05 O.S. 13.05 to 13.07 mm (0.5138 to 0.5146 in.)
0.25 O.S. 13.25 to 13.27 mm (0.5217 to 0.5224 in.)
0.50 O.S. 13.50 to 13.52 mm (0.5315 to 0.5323 in.)
(3) Press in the valve guide to the position shown in the
illustration.
Standard value: 11.5 mm (0.453 in.)
NOTE:
1) Press-fit the valve guide, working from the cylinder head
top surface.
2) Note that the intake and exhaust side valve guides are
different in length.
3) After installing valve guides, insert new valves in them to
check for sliding condition.
Installation Service Points
A Valve stem seal installation
(1) Install the valve spring seat.
(2) Using special tool, install the new valve stem seat to the
valve guide.
Caution:
1) Do not reuse removed valve stem seal.
2) The special tool must be used to install the valve stem
seal. Improper installation could result in oil leaking past
the valve guide.
B Valve spring installation
Direct the valve spring end with identification color toward the
rocker arm.
Press
Removal
Installation
Press
MD998729
Spring
retainer
Stem seal
Spring seat
Indentification
color
Push rod
Valve
guide
Valve
guide
11.5mm (0.453 in)

Daewoo GC25E-3 Specifications

General

Brand	Daewoo
Model	GC25E-3
Category	Engine
Language	English