5-4
Art.- No. 3.206.088-E
Repair manual KTM 250 / 300
Crankshaft
– When replacing the roller bearing, the inner crankshaft ring must
also be renewed.
– Heat special tool 584.29.037.043 on a heating pad up to approx.
150°C and slip it on the inner ring immediately. Press the special
tool together tightly to obtain a good heat transfer and pull the inner
ring off the crankshaft.
– To mount the new inner ring, heat the special tool again to approx.
150°C, engage the inner ring and slip it on the crankshaft journal
immediately.
!
CAUTION
!
N
EVER CLAMP THE CRANKSHAFT WITH A STUD OR WEB IN THE VICE
,
AND NEVER TRY
TO KNOCK THE BEARING INNER RING FREE
. T
HE CRANKSHAFT WEBS MAY BE COM
-
PRESSED AND THE CON
-
ROD PLUG AND BEARING MAY BE DAMAGED
,
THEREBY
MAKING THE CRANKSHAFT UNUSABLE
.
NOTE: Distance adjustment of the main bearings is not required.
Crankshaft webs - measure outer dimension
Crankshaft webs - measure the outer dimension with a sliding caliper as
illustrated.
Crankshaft webs - outer dimension = 60 mm ± 0.05 mm
Check the piston
If a used piston is to remain in service then the following should be
checked:
1. Piston running surface: Check for pressure marks (seizing marks),
minor friction marks can be removed with a fine abrasive stick.
2. Piston ring groove: The piston ring may not jam in the groove. Use an
old piston ring or sandpaper (400 grit) to clean the groove.
3. The piston ring anti-rotation device must fit tightly in the piston and
must not be worn.
4. Check the piston rings for wear and check the end gap.
Piston ring end gap
– Insert the piston ring into the cylinder and adjust it.The piston ring
must be approx. 10 mm (1/2 inch) from the top of the cylinder.
– The end gap
B
can now be checked with a feeler gauge.
Piston ring end gap: max. 0.40 mm
NOTE: If the end gap is greater, check the piston and cylinder for wear.
If the piston and cylinder wear are within the permitted tolerance limits,
replace the piston ring.
2 piston rings are installed starting with the 2005 model.
Summary of Contents for 125 SX 2010
Page 2: ...OWNERSMANUAL2010 250 SX 250 300 XC XC W EXC EXC SixDays ...
Page 3: ...OWNER S MANUAL 2010 125 SX 150 SX 250 SX Art no 3211480en ...
Page 91: ...TECHNICAL DATA SHOCK ABSORBER 89 Shock absorber oil p 95 SAE 2 5 ...
Page 93: ...91 ...
Page 222: ...119 ...
Page 223: ...WIRING DIAGRAM 120 ...
Page 226: ...WIRING DIAGRAM 123 ...
Page 304: ...1 2 3 4 7 12 Art No 3 206 088 E Repair manual KTM 250 300 ...
Page 306: ...bl bk 6 7 8 9 7 14 Art No 3 206 088 E Repair manual KTM 250 300 ...
Page 308: ...1 2 3 4 5 7 16 Art No 3 206 088 E Repair manual KTM 250 300 ...
Page 393: ...11 15 PERIODIC MAINTENANCE SCHEDULE 2010 250 SX ...
Page 394: ...11 16 Repair manual KTM 250 300 Art No 3 206 088 E ...
Page 396: ...11 18 Repair manual KTM 250 300 Art No 3 206 088 E ...
Page 397: ...11 19 ...
Page 409: ...EXC 250 300 2005 EXC SIX DAYS 250 300 05 06 12 11 ...
Page 413: ...EXC 250 300 2005 EXC SIX DAYS 250 300 05 06 12 15 ...
Page 414: ...EXC USA 250 2005 12 16 Art No 3 206 088 E Repair manual KTM 250 300 ...
Page 416: ...12 18 Repair manual KTM 250 300 Art No 3 206 088 E ...
Page 430: ...Repair manual KTM 250 300 Art No 3 206 088 E 12 32 250 EXC EXC Six Days EU AUS 2008 2009 ...
Page 431: ...12 33 250 300 XC USA 2008 250 CX W ZA 2008 2009 ...
Page 433: ...12 35 300 EXC E EXC E SixDays EU AUS 2008 2009 ...
Page 437: ...12 39 250 SX 2010 ...
Page 438: ...12 40 Repair manual KTM 250 300 Art No 3 206 088 E ...
Page 439: ...12 41 250 EXC EU 2010 ...
Page 440: ...12 42 Repair manual KTM 250 300 Art No 3 206 088 E ...
Page 441: ...12 43 250 300 EXC 2010 ...
Page 442: ...12 44 Repair manual KTM 250 300 Art No 3 206 088 E ...
Page 443: ...12 45 250 300 XC XC W 2010 ...
Page 444: ...12 46 Repair manual KTM 250 300 Art No 3 206 088 E ...
Page 445: ...REPAIRMANUAL2004 2010 2004 2005 DCC ...
Page 553: ...1 7 T 14031 Dismounting mounting tool ...
Page 559: ...2 6 Exploded view PDS 5018 SXS SMR 2005 2006 ...
Page 561: ...2 8 Exploded view PDS 5018 SXS 2007 ...
Page 739: ...1 7 T 14 030 Adaptor T 14 033 Assembling tool ...
Page 741: ...2 2 Repair manual WP Fork Closed Cartridge Art No 3 211 199 E Exploded view SXS 2005 ...
Page 746: ...2 7 Exploded view SXS 2006 ...
Page 751: ...2 12 Repair manual WP Fork Closed Cartridge Art No 3 211 199 E Exploded view SX 2007 ...
Page 756: ...2 17 Exploded view Fork SXS 2007 ...