Quantcast b.     Crankshaft End Play Test

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ARMY TM 9-2815-259-24 AIR FORCE TO 38G1-125-2 MARINE CORPS 09249A/09246A-24 5-62 (13)   If bearings (5 and 6) are to be replaced, remove inserts from engine block.  Otherwise, leave bearing inserts in block until assembled inner diameter has been measured. (14)   Using an arbor press and gear puller, pull gear (8) from crankshaft (7).  Remove key (9) from crankshaft.   b.     Crankshaft End Play Test. __________ WARNING Cleaning solvent is flammable and toxic to eyes, skin, and respiratory tract. Skin and eye protection are required.  Avoid repeated/prolonged contact.   Good general ventilation is normally adequate. __________ WARNING Compressed air used for cleaning can create airborne particles that may enter the eyes.  Pressure will not exceed 30 psig (207 kPa).  Eye protection required. (1)     Inspect gear (8, Figure 5-67) for wear or damage. (2)     Check crankshaft end play as follows: NOTE It is recommended that crankshaft end play be measured prior to removing crankshaft to determine condition of thrust bearings.  Crankshaft end play may also be checked at front end of crankshaft. (a) Position dial indicator on face of flywheel. (b) Push crankshaft as far to rear of engine as possible. (c) Zero dial indicator. CAUTION Do not apply too much pressure with bar, as this could damage bearings. (d) Using a bar, gently pry crankshaft as far forward as possible. NOTE New thrust bearings will usually restore proper end play.  If end play is not within specification on two piece flanged thrust bearings, install a two piece thrust bearing (without flange) and oversized thrust washers. (e) End play for new two piece thrust bearing, refer to Table 5-5 for values.


 


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