TM 5-3805-280-24-2
CHECKING VIBRATION DAMPER OR
15
15
PULLEY
NOTE: When cleaning damper, never soak in a cleaning
solvent. Use a steam cleaner, soap solution or
water only.
1. Prior to disassembly, check damper total run-out (A) or
wobble (B) and compare to the following specifications:
Vibration Damper Only--Specification
Maximum radial run-out (A) ...................................... 1.50 mm (0.060 in.)
Maximum wobble (B).................................................. 1.50 mm (0.060 in.)
2. Replace damper if total run-out or wobble exceeds
specifications.
3. Grasp damper and attempt to turn in both directions
(clockwise and counterclockwise). If rotation is felt,
outer ring has slipped relative to rubber member or
drive hub. Replace damper.
IMPORTANT: Replace damper after 4500 hours or
every five years, whichever occurs first.
A--Radial Run-Out
B--Wobble
RG,15,DT7457 1914NOV971/1
REPLACE FRONT CRANKSHAFT OIL SEAL
AND WEAR SLEEVE
NOTE: This procedure is for removing seal and wear
sleeve with timing gear cover installed.
REMOVE FRONT CRANKSHAFT OIL SEAL:
1. Remove poly-vee belts.
2. Remove vibration damper/pulley or pulley from
crankshaft as previously instructed in this group.
Continued on next page
RG,15,DT7455 1914NOV971/10
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