Oil Ring Installation - Mitsubishi 4G9 User Manual

11A-11-4
4G9 ENGINE (E–W) –
Push rod
Piston pin
Front mark
Front
mark
Side rail
Spacer
Side rail end
E
E
Mitsubishi Motors Corporation
Mitsubishi Motors Corporation
(9) Place the piston and connecting rod assembly onto the
(10)Press-fit the piston pin using a press. If the press-fitting
Guide A
Base
Guide B
"BA OIL RING INSTALLATION
(1) Fit the oil ring spacer into the piston ring groove. Install
(2) Make sure that the side rails move smoothly in either
May 1995
Jun. 2002
Piston and Connecting Rod
piston setting base with the front marks directed upward.
force required is less than the standard value, replace
the piston and piston pin set or/and the connecting rod.
Standard value: 4,500 – 14,700 N
the upper side rail, and then install the lower side rail.
NOTE
1. The side rails and spacer may be installed in either
direction.
2. New spacer and side rail are painted with the following
identification colour according to the size.
Size
Standard size
0.50 mm O.S.
1.00 mm O.S.
1
: Except PAJERO io 4G94–16-valve for General
Export, South Africa, Egypt
2
: PAJERO io 4G94–16-valve for General Export,
South Africa, Egypt
3. To install the side rail, first fit one end of the rail
into the piston groove, then press the remaining
portion into position by finger as shown in the
illustration.
Caution
Do not use piston ring expander when installing side
rail. Use of piston ring expander to expand the side
rail end gap can break the side rail, unlike other piston
rings.
direction.
PWEE9502
PWEE9502-K
Identification colour
1 2
None or red
Blue
Yellow
Revised