Snap-on CAT3 - page 459

PULLERS & INDUSTRIAL
HYDRAULICS
459
snapon.com/industrialbrands
General Rule to Choose Pullers
Manual Pullers
- Pressure screw should be at least half the diameter
of the shaft on the pulling/pushing job.
Hydraulic Pullers
-Maximum tonnage capacity (tons) should be 8 to 10
times the diameter (in inches) of the shaft to be pulled or pushed.
Warning
Pullers and parts under stress can break.
Wear safety goggles while using pullers. Screen the puller from yourself
and bystanders. Use the largest size puller possible to do the job. Use a
three jaw puller where possible. Inspect puller; do not use puller with worn
or damaged parts. Make sure puller is fully engaged and squarely seated.
Broken parts can cause injury.
Heating puller jaws can change their strength.
Do not heat jaws of puller.
Weakened jaws can break and cause injury.
Hammering on puller jaws can cause damage.
Hammer only on curved head of pressure screw.
Broken parts can cause injury.
Hand can get caught between slide hammer and hammer stop.
Keep hand away from front and rear of slide hammer.
Hand injury can be caused by slide hammer.
Damaged or loose hydraulic lines can leak or burst.
Inspect hoses; do not use hoses with cuts, splits, or cracks.
Tighten hydraulic connections.
Hydraulic leak can cause injury.
Be sure that pressure screw threads are cleaned and
well lubricated when using impact tools on pullers.
Always use protective tip or removable point to
prevent pressure screw from mushrooming or splitting.
Always maintain a proper fluid level in hydraulic pump.
Always use a pressure gauge with hydraulic pullers.
Never keep pressure on a hydraulic ram.
When job is finished, immediately release ram pressure.
Use blind hole bearing pullers rather than torches, chisels, screwdrivers,
hammers, prybars, etc. A blind hole puller provides 360° of steady,
even pulling power.
Removing a Gear, Bearing, Pulley, or
Other Component from a Shaft
Pulling a Shaft Out of a Housing or Bore
Removing a Bearing or Bushing from
a Blind Hole
Tools to Use
Jaw-Type Puller
- 2- or 3-jaw style, with
3-jaw being the best choice. Manual or
hydraulic with outside jaw positions.
Push-Pull Puller
- Use male or female
adaptors to thread into tapped holes
on components.
Slide Hammer Puller
- Use on light-duty
applications. For use with attachments.
Bar-Type Puller with Bearing Separator
Bar type with side rods threaded into
bearing separator provides "knife edge”
to get behind component or when there
is not a good gripping edge.
Tools to Use
Push-Pull Puller
- Use male or
female adaptors.
Bar-Type Puller with Bearing Separator
- Use
when housing lacks sufficient surface for
puller side rods to bear against.
Slide Hammer Puller
- Use on light-duty
applications. For use with attachments.
Slide Hammer Puller
-Use with male or female
adaptors. See page 333 for a full listing of
compatible adaptors.
Tools to Use
Jaw-Type Puller
- For inside jaw positions
(inside pulls), a manualor hydraulic jaw-
type puller can be used with pressure
screw or slide hammer variations.
Expanded Collet Puller
- The inside
diameter should range between 1/4"
and 7". Pulling can be done with bridge,
bar-type yokes, or slide hammers.
Bearing Adaptors with Slide Hammer Puller
Slide Hammer should be used in this
application.
Bar-Type Puller with Bearing Separator -
Bar type with side rods threaded into
bearing separator provides "knife edge”
to get behind components or when
there is not a good gripping edge.
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