Briggs & Stratton Twin Cylinder L-Head, Repair Manual

Page: 138 / 171

10
7
Install DU PTO Bearing – Vertical
Crankshaft Models
NOTE: DU bearing, Part #231180, for vertical
crankshaft engines must be installed with
3/4” (19.0 mm) offset toward thrust face,
Fig. 14.
1. Place sump on cylinder support, Tool #19227, with
1-5/8” (41.3 mm) opening toward bearing to be
installed.
2. Place DU bearing on counterbored bearing.
Fig. 14 – DU Bearing Part #231180
THIS END
TOWARD
THRUST FACE
OIL
HOLE
3/4” (19.0 mm)
7/8”
(22.2 mm)
NOTE: On pressure lube models 400700,
402770, 404770 and 422770 make sure oil
hole in DU bearing is aligned with oil hole in
sump.
3. Insert bearing driver, Tool #19226, into DU bearing
and press in until edge of DU bearing is 1/32”
(.8 mm) below thrust face on pressure lube
engines or 5/32” (4.0 mm) below thrust face on
splash lube engines, Fig. 15.
1/32”
(.8 mm)
Fig. 15 – Press PTO Bearing
DU
BEARING
OIL
HOLE
#19226
THRUST
FACE
PRESSURE
LUBE
THRUST
FACE
SPLASH
LUBE
#19227
5/32”
(4.0 mm)
4. To prevent bearing from turning stake bushing as
shown in Fig. 16.
Install Oil Seal – PTO – Vertical Crankshaft
Models
Install oil seal with the sealing lip facing the inside of the
engine. Use cylinder support, Tool #19227, and press
in new oil seal until flush with sump.
Always install new oil seals whenever engine is
disassembled for major servicing or when repairing or
replacing bearings. Always use the correct seal
protector to prevent damaging oil seal.
Fig. 16 – Staking Bearing
1/4” ROUND
PIN PUNCH
STAKE IN
2 PLACES