Service Data - Cylinder + Piston + Piston Ring; Service Data - Conrod + Crankshaft; Service Data - Oil Pump/Clutch; Service Data - Theremostat + Radiator - Suzuki RG250 Service Manual

8·19 SERVICING INFORMATION
SERVICE DATA
CYLINDER
+
PISTON
+
PISTON RING
Unit:
mOl
ITEM STANDARD
LIMIT
Piston to cylinder clearance 0.070 - 0.080 0,120
Cylinder bore 54.010 - 54.025
54.070
Measure at 25 from the top surface
Piston diam . 53.935-53.950
53.890
Measure at 22 from the skirt end
Cylinder distortion
- -
0.05
Cylinder head distortion
- -
0. 10
Piston ring free end gap
1st
RN Approx . 4 .5 3.6
2nd RN Approx . 5.3 42
Piston ring end gap
0.15 - 0.30 0.75
Piston ring to groove clearance 1st 0.03 - 0.06
- -
2nd 0.02 - 0.06
- -
Piston pin bore 14.002 - 14.010 14.030
Pist on pin 0.0 .
13.995 - 14.000
13.980
CON ROD
+
CRANKSHAFT
Unit · mm
ITEM STANDARD LIMIT
Conrad small end LD . 18.003- 18.0 1 1 18.040
Conrad deflection
- -
3.0
Crank web to web width
50
+
0.1
- -
Crankshaft runout
- -
0.05
OIL PUMP
ITEM SPECIFICATION
Oil pump reduction ratio
4 .573 I 72124 x 23119 x 29123
I
eel
pump discha rge fate 2.9 - 3 .5 ml
(Full open) for
2
minutes at
2 000
r/min .
CLUTCH
Unit· mm
ITEM STANDARD LIMIT
Clutch cable play 4
- -
Clutch release screw 1/4 - 1/2
Turn back
- -
Drive plate thickness 2.9 - 3.1 2.6
Dri ve plate claw width 15.8 - 16.0 15.0
Driven plate distortion
- -
0 . 10
Clutch spring free length
- -
38.4
THERMOSTAT
+
RADIATOR
ITEM
STANDARD
LIMIT
Thermostat valve opening
65
±
1.5° C
- -
temperature
Thermostat valve lift 6 mm or more at 80
0
C
- -
Radiator cap valve opening pressure
0.9
±
0.15 kg/cm
2 ,
- -
90
+
15 kPa