Ring Groove Clearance; Measuring Piston Ring End Gap; Piston Pins; Piston Ring End Gap - Suzuki Samurai 1986 Service Manual

Ring groove clearance:

Before checking, piston grooves must be
clean, dry and free from carbon.
Fit new piston ring into piston groove, and
measure clearance between ring and ring land
by using thickness gauge.
If the clearance is out of specification, replace
piston.
Ring groove
clearance
Fig. 3-5-32 Measuring ring groove clearance

Piston ring end gap:

To measure end gap, insert piston ring into
cylinder: bore, locating it at the lowest part of
bore and holding it true and square; then
use a feeler gauge'to measure gap. If the gap
exceeds its limit, replace ring.
NOTE:
Decerbon and clean top of cylinder bore,
before inserting piston ring.
Item
Standard
Top ring 0 . 2 0 0 . 3 3 m
Piston
ring 2nd 0.20 - 0.35 mm
ring
end (0.0079 - 0.0137 in.) (0.0275 in.)
0.20 - 0.70 mm
Oil riilg
(0.0079 - 0.0275 in.) (0.0708 in.)
2. Thickness geuge
L i m i t
m 0.7 mm
0.7 mm
1.8 mm
Fig. 3-5-33 Measuring piston ring end gap

Piston Pins

Piston pin must be fitted into piston bore
l
with an easy finger push at normal room
temperature.
Check piston pin and piston bore for wear or
l
damage. If pin or piston bore is badly worn or
damaged, replace pin or piston, or both.
Connecting Rods
Big-end side clearance:
l
Check big end of connecting rod for side
clearance, with rod fitted and connected to
its crank pin in the normal manner. If clea-
rance measured is found to exceed its limit,
replace connecting rod.
Item
Standard
Big-end side
0.10 - 0.20 mm
clearance
(0.0039 - 0.0078 in.)
Fig. 3-5-34 Measuring side clearance
1. Cylinder block
2. Feeler gauge
3. Piston ring
4 . 12Omm
(4.72 in.)
L i m i t
0.35 mm
(0.0137 in.)
3-27