Piston Ring Groove Width; Piston Ring Thickness; Piston Ring End Gap - Suzuki Intruder VZR1800 Service Manual

PISTON RING-TO-GROOVE CLEARANCE
• Measure the side clearances of the 1st and 2nd piston rings
using the thickness gauge.
• If any of the clearances exceeds the limit, replace both the
piston and piston rings.
% 09900-20803: Thickness gauge
09900-20205: Micrometer (0 – 25 mm)
$ Piston ring-to-groove clearance:
Service Limit (1st) : 0.180 mm (0.0071 in)
(2nd) : 0.150 mm (0.0059 in)

$ Piston ring groove width:

Standard (1st) : 0.93 – 0.95 mm (0.0366 – 0.0374 in)
(2nd) : 1.21 – 1.23 mm (0.0476 – 0.0484 in)
(Oil) : 2.51 – 2.53 mm (0.0988 – 0.0996 in)

$ Piston ring thickness:

Standard (1st) : 0.86 – 0.91 mm (0.034 – 0.036 in)
(2nd) : 1.17 – 1.19 mm (0.046 – 0.047 in)
PISTON RING FREE END GAP AND PISTON RING END GAP
• Measure the piston ring free end gap using the vernier cali-
pers.
• Next, fit the piston ring squarely into the cylinder and measure
the piston ring end gap using the thickness gauge.
• If any of the measurements exceeds the service limit, replace
the piston ring with a new one.
$ Piston ring free end gap:
Service Limit (1st) : 12.6 mm (0.50 in)
(2nd): 11.6 mm (0.46 in)
% 09900-20101: Vernier calipers

$ Piston ring end gap:

Service Limit (1st) : 0.50 mm (0.020 in)
(2nd): 0.50 mm (0.020 in)
% 09900-20803: Thickness gauge
: 1.55 – 1.57 mm (0.0610 – 0.0618 in)
: 1.38 – 1.40 mm (0.054 – 0.055 in)
ENGINE 3-43