272144 Vanguard Twin Cylinder OHV BRIGGS & STRATTON.pdf

Insert Bushing Driver #19349 into bearing from oil
seal side. Place a reference mark on driver to
indicate proper depth of bushing when installing new
bearing, as shown, Fig. 6.
Remove
The magneto bearing has a roll pin installed in the oil
gallery to prevent the bearing from turning.
1. Drive roll pin (2) into oil gallery using a 3/16”
punch (1), Fig. 10.
2. Place cylinder on Cylinder Support #19227 with
large opening facing bearing.
3. Press out bearing with Bushing Driver #19349.
Fig. 12
5. Place TAPERED end of new roll pin in the
bearing oil hole.
6. Use Roll Pin Driver #19344 to install new roll pin,
Fig. 13. Drive in new roll pin until tool bottoms.
7. Use Cylinder Support #19227 and press oil seal
until flush with cylinder.
Fig. 10
Install
1. Place cylinder on Cylinder Support #19227 with
large opening facing bearing.
2. Align oil holes in bearing with oil holes in cylinder.
3. Press in new bearing to correct depth with
Bushing Driver #19349 (3), Fig. 11.
PTO Ball Bearing
Fig. 13
Check
Ball bearings must rotate freely, Fig. 14. If any rough
spots are felt replace the ball bearing.
• CAUTION: Crankcase cover bearings are
usually damaged during removal from the
crankcase. Do not re-use crankcase cover
bearings.
Fig. 11
4. Grind off the taper (5), approximately 1/8” (3
mm) (4), from one end of new roll pin as shown,
Fig. 12.
a. Quench pin in water periodically to prevent
loss of temper.
b. Remove all burrs and clean thoroughly.
Fig. 14
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