Checking The Bearings And Oil Seals - Orion AGB-21G Service Manual

CHECKING THE BEARINGS AND OIL SEALS

1. Check:
bearings
Clean and lubricate the bearings, then rotate
the inner race with your finger.
Rough movement
2. Check:
oil seals
Damage/wear
CHECKING THE TIMING CHAIN, CAM-
SHAFT SPROCKET, AND TIMING CHAIN
GUIDES
1. Check:
timing chain
Damage/stiffness
chain and camshaft sprocket as a set.
2. Check:
camshaft sprocket
More than 1/4 tooth a wear
camshaft sprocket and the timing chain as a
set.
a 1 / 4 tooth
b Correct
1 Timing chain roller
2 Camshaft sprocket
3. Check:
timing chain guide (exhaust side)
timing chain guide (intake side)
timing chain guide (top side)
Damage/wear
part(-s).
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CRANKSHAFT
Replace.
Replace.
Replace the timing
Replace the
Replace the defective