Crankshaft; Oil Seals - Stihl BR 500 Service Manual

7.9

Crankshaft

7.9.1

Oil Seals

It is not necessary to disassemble
the engine to replace the oil seals.
Starter side
– Remove the flywheel, b 7.7
– Free off the oil seal in its seat by
tapping it with a suitable tube or a
punch.
1
: Apply puller (1) 5910 890 4400
with No. 3.1 jaws and clamp the
arms.
– Pull out the oil seal.
Take care not to damage the
crankshaft stub.
– Inspect the crankshaft running
face for scores.
– Clean sealing face in crankcase
and crankshaft with standard
solvent-based degreasant
containing no chlorinated or
halogenated hydrocarbons,
b 13.
Install in the reverse sequence.
38
1
– Thinly coat the outside diameter
of the oil seal with sealant, b 13.
– Lubricate sealing lips of oil seal
with grease, b 13.
– Slip the oil seal (1) over the
crankshaft and up against the
crankcase.
Note installed position:
Closed side of oil seal must face
outward.
1
2
: Use the press sleeve (2)
1108 893 2405 to press home the
oil seal (1) until it is flush with the
crankcase.
Install all other parts in the reverse
sequence.
1
Fanwheel side
– Remove the fanwheel, b 11.3
: Apply puller (1) 5910 890 4400
with No. 3.1 jaws and clamp the
arms.
– Pull out the oil seal.
Take care not to damage the
crankshaft stub.
– Inspect the crankshaft running
face for scores.
– Clean sealing face in crankcase
with standard solvent-based
degreasant containing no
chlorinated or halogenated
hydrocarbons,
b 13.
Install in the reverse sequence.
1
: Slip the installing sleeve (1)
1118 893 4602 over the end of
the crankshaft.
BR 500, BR 550, BR 600