G.14 Part. N. 8000 H1344 (10-2009)
ENGINE OVERHAULING
Piston rings
The piston rings should not show signs of excessive wear or scoring.
Spacer pistons are supplied complete with rings and gudgeon pins.
Piston rings/cylinder clearance
Introduce the ring into the lower part of the cylinder. (i.e. where there is least
wear), ensure that the ring is squared up and then check the ring end gap.
Piston rings/cylinder clearance
PISTON RING NOMINAL CLEARANCE (H) WEAR LIMIT
"A" TE 310: 0,20÷0,35 mm 0,5 mm
(0.00787÷0.0138 in.) (0.0197 in.)
"A" TC-TXC-TE-SMR 450, TXC 510: 0,25÷0,40 mm 0,7 mm
(0.0094÷0.00157 in.) (0.027 in.)
"A" TE-SMR 510: 0,20÷0,45 mm 0,7 mm
(0.00787÷0.0177 in.) (0.027 in.)
"B" TE-SMR 450: 0,40÷0,55 mm 1 mm
(0.00157÷0.0216 in.) (0.0394 in.)
"B" TE-SMR 510: 0,20÷0,45 mm 0,7 mm
(0.00787÷0.0177 in.) (0.027 in.)
"C" TE 310: 0,20÷0,70 mm 1,2 mm
(0.00787÷0.0275 in.) (0.047 in.)
"C" TC-TXC-TE-SMR 450; TXC 510: 0,20÷0,70 mm 1,2 mm
(0.00787÷0.0275 in.) (0.047 in.)
"C" TE-SMR 510: 0,10÷0,20 mm 0,35 mm
(0.00394÷0.00787 in.) (0.014 in.)
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