Man D2862 LE221 - FRONT TIMING GEARS;REAR TIMING GEARS; Timing Gear Assembly and Procedures

VALVETIMING
Checkingthevalvetiming
Detachingthecylinderheadcover,cylinder1
•Unscrewthemountingbolts(2)
•Removethecylinderheadcover(1)
•Cleanthesealingsurfaces
Attachingtheenginebarringgear
•RemovethecapwithsealandTDCmarkingplate
fromtheywheelhousing
•Cleanthesealingsurfaces
•AttachtheEnginebarringgear[100](1)onthe
ywheelhousing
•Turntheengineintheengine'srunningdirection
withtheEnginebarringgear[100](1)andtheGear
ratchet[101]untilthe1stcylindervalvesarein
overlap
•ChecktheTDCmarkontheywheel,lineitup
preciselywiththeTDCmarkifitdoesnotmatch
up
•Turntheengineintheoppositedirectiontothe
engine'srunningdirectionuntilitreaches50°
beforeTDC
•Turntheengineintheengine'srunningdirection
untilitreaches30°beforeTDC
Checkingthevalvelift
•AttachtheDialgauge[103](1)withDialgauge
holder[102](2)onthecylinderhead
•Placethemeasuringtip(3)oftheDialgauge[103]
(1)onthevalvediscfortheintakevalve(4)
•ZerotheDialgauge[103](1)
•Continuecrankingtheengineintheengine's
runningdirectionuntilthedialgaugepointerstops
moving
Inthispositionthecorrectvalveliftmustbe11.0–
11.3mm.
Ifthevalveliftisoutoftolerance(11.0–11.3mm
),checkthecamshaft,transmissioncomponentsof
thevalvetimingandtiminggearsand,ifnecessary,
tnewparts.
Attachingthecylinderheadcover
•Checkthesealand,ifnecessary,tanewone
•Fitthecylinderheadcover(1)
•Screwinandtightenthemountingbolts(2)
AE63stedition253