Brush Bandit 1290XP, Инструкция по эксплуатации и каталог запасных частей

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Bandit
Copyright 12/07 PAGE 0
MODELS 1290XP/1590 MAINTENANCE SECTION
SERVICING / CHANGING CHIPPER BEARING
(FOR LINK BELT PB22647FHK4/2 SERIES)
NOTE: Proper installation is critical to bearing life. Improper installation could cause premature or immediate
failure. Particular care must be taken not to create a preload on the bearings while tightening the locknut. Use
of a good quality torque wrench is also important to your safety as well as proper bearing installation.
1. Clean the shaft so that it is free from burrs and rust. Do not coat the chipper shaft or the bore of the
bearing adapter with a preservative or lubricant.
2. Remove the bearing adapter and apply a light weight oil to the outer surface and threads.
Reassemble the adapter in the bearing with about 1/” (6. mm) if clearance between the bearing
face and lockwasher. Repeat the process to the other bearing.
. Center the chipper drum inside the base and bolt the bearing down on the road side of the machine
and tighten the four bearing bolts to 220 ft.-lbs. (298 Nm) of torque.
6. Find the tang of the lockwasher that is in line with a slot in the locknut and bend it over into the slot.
If needed tighten the locknut slightly until one of the slots line up.
7. Offset the bearing on the curb side of the machine about 1/8” (.2 mm) to /16” (.8 mm) away from
the drum housing, so that when the bearing is tightened up on the shaft, the bolt holes will line up.
The bearing housing should not be wedged up against the base, if it is the bearing will have a preload.
8. Repeat steps through 6 to tighten the curb side bearing on the shaft.
9. Loosen all the bearing bolts to release the preload on the bearings if there is any. Bolt both
bearings down and torque the bolts to 220 ft.-lbs. (298 Nm)
10. If the drum head does not spin freely, there is a preload on the bearings and steps 7 through 9 need
to be repeated.
5. Mark the locknut and chipper drum shaft with a grease pencil or a dark marker. Use a soft steel
drift pin and a hammer to drive against the face in a circular movement of the locknut as shown in
the following picture. Retighten the locknut with a spanner wrench and repeat procedure until 7/8 of
a turn is achieved.
4. Keeping the drum centered, take a large flat blade
screwdriver to wedge between the bearing’s face and
lockwasher on the road side of the machine. Use the
screwdriver to draw the adapter through the bearing
until there is a snug fit between the adapter and chipper
drum shaft. Finger tighten the locknut, the use a hook type
spanner wrench to bring the locknut to a snug fit.