Rotax 914 F - Page 262

Reference
Modification no.
- 0 -
Page
262
Date
1997 02 01
Main
914 F
01480
Designation new wear limit actual dim.
mm (in.) mm (in.) int. / exh.
2
nd
compression ring (bevel-edged)
height of groove ...................................... 1,27 ÷ 1,29 (0,050÷0,051) .............. 1,35 (0,053) ........................
height of ring ........................................... 1,228 ÷ 1,24 (0,048÷0,049) .............. 1,20 (0,047) ........................
ring / groove clearance ........................... 0,03 ÷ 0,062 (0,001÷0,002) .............. 0,1 (0,004) ........................
ring end gap F ....................................... 0,3 ÷ 0,5 (0,011÷0,02) ................ 1,0 (0,04) ..........................
3
rd
ring (oil scraper ring)
height of groove ...................................... 3,01 ÷ 3,03 (0,118 ÷0,119) ............ 3,1 (0,122) ........................
height of ring ........................................... 2,975 ÷ 2,99 (0,117 ÷0,118) ............ 2,95 (0,116) ........................
ring / groove clearance ........................... 0,02 ÷ 0,045 (0,0008÷0,002) ............ 0,1 (0,004) ........................
ring end gap F ....................................... 0,15 ÷ 0,40 (0,006 ÷0,016) ............ 1,0 (0,04) ..........................
Piston rings, Cyl.2
1
st
compression ring
height of groove ...................................... 1,52 ÷ 1,54 (0,059÷0,061) .............. 1,6 (0,063) ........................
height of ring ........................................... 1,478 ÷ 1,49 (0,058÷0,059) .............. 1,45 (0,057) ........................
ring / groove clearance ........................... 0,03 ÷ 0,062 (0,001÷0,002) .............. 0,1 (0,004) ........................
ring end gap F ....................................... 0,15 ÷ 0,35 (0,006÷0,014) .............. 1,0 (0,04) ..........................
2
nd
compression ring (bevel-edged)
height of groove ...................................... 1,27 ÷ 1,29 (0,050÷0,051) .............. 1,35 (0,053) ........................
height of ring ........................................... 1,228 ÷ 1,24 (0,048÷0,049) .............. 1,20 (0,047) ........................
ring / groove clearance ........................... 0,03 ÷ 0,062 (0,001÷0,002) .............. 0,1 (0,004) ........................
ring end gap F ....................................... 0,3 ÷ 0,5 (0,011÷0,02) ................ 1,0 (0,04) ..........................
3
rd
ring (oil scraper ring)
height of groove ...................................... 3,01 ÷ 3,03 (0,118 ÷0,119) ............ 3,1 (0,122) ........................
height of ring ........................................... 2,975 ÷ 2,99 (0,117 ÷0,118) ............ 2,95 (0,116) ........................
ring / groove clearance ........................... 0,02 ÷ 0,045 (0,0008÷0,002) ............ 0,1 (0,004) ........................
ring end gap F ....................................... 0,15 ÷ 0,40 (0,006 ÷0,016) ............ 1,0 (0,04) ..........................
Piston rings, Cyl. 3
1
st
compression ring
height of groove ...................................... 1,52 ÷ 1,54 (0,059÷0,061) .............. 1,6 (0,063) ........................
height of ring ........................................... 1,478 ÷ 1,49 (0,058÷0,059) .............. 1,45 (0,057) ........................
ring / groove clearance ........................... 0,03 ÷ 0,062 (0,001÷0,002) .............. 0,1 (0,004) ........................
ring end gap F ....................................... 0,15 ÷ 0,35 (0,006÷0,014) .............. 1,0 (0,04) ..........................
2
nd
compression ring (bevel-edged)
height of groove ...................................... 1,27 ÷ 1,29 (0,050÷0,051) .............. 1,35 (0,053) ........................
height of ring ........................................... 1,228 ÷ 1,24 (0,048÷0,049) .............. 1,20 (0,047) ........................
ring / groove clearance ........................... 0,03 ÷ 0,062 (0,001÷0,002) .............. 0,1 (0,004) ........................
ring end gap F ....................................... 0,3 ÷ 0,5 (0,011÷0,02) ................ 1,0 (0,04) ..........................
3
rd
ring (oil scraper ring)
height of groove ...................................... 3,01 ÷ 3,03 (0,118 ÷0,119) ............ 3,1 (0,122) ........................
height of ring ........................................... 2,975 ÷ 2,99 (0,117 ÷0,118) ............ 2,95 (0,116) ........................
ring / groove clearance ........................... 0,02 ÷ 0,045 (0,0008÷0,002) ............ 0,1 (0,004) ........................
ring end gap F ....................................... 0,15 ÷ 0,40 (0,006 ÷0,016) ............ 1,0 (0,04) ..........................
Piston rings, Cyl. 4
1
st
compression ring
height of groove ...................................... 1,52 ÷ 1,54 (0,059÷0,061) .............. 1,6 (0,063) ........................
height of ring ........................................... 1,478 ÷ 1,49 (0,058÷0,059) .............. 1,45 (0,057) ........................
ring / groove clearance ........................... 0,03 ÷ 0,062 (0,001÷0,002) .............. 0,1 (0,004) ........................
ring end gap F ....................................... 0,15 ÷ 0,35 (0,006÷0,014) .............. 1,0 (0,04) ..........................