ARMY TM 9-2815-260-24
AIR FORCE TO 38G1-126-2
MARINE CORPS TM 09244A/09245A-24
Crankshaft End Play Test.
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.
Compressed air used for cleaning can create airborne particles that may
enter the eyes. Pressure will not exceed 30 psi (207 kPa). Eye protection
Inspect gear (8, Figure 5-67) for wear or damage.
Check crankshaft end play as follows:
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.
Position dial indicator on face of flywheel.
Push crankshaft as far to rear of engine as possible.
Zero dial indicator.
Do not apply too much pressure with bar, as this could damage bearings.
Using a bar, gently pry crankshaft as far forward as possible.
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.
End play for new two piece thrust bearing, refer to Table 5-5 for values.
Inspect crankshaft per the following procedures:
Clean crankshaft using solvent and compressed air.
Inspect oil passages to make sure they are open. Use compressed air and a small piece of