Tiger Products Co., Ltd 5093E, 5083E, 5101E Bearing Installation, Bearing Adjustment, Maintenance

MAINTENANCE

MAINTENANCE

BEARING INSTALLATION

1.Press upper bearing cup into the spindle housing.

2.Turn the spindle housing over and press in the lower bearing cup.

3.Place the lower bearing cone in the bearing cup. Next press the seal into the spindle housing. The inner lip of the seal must be DOWN, towards the bearing, so lubricant is sealed inside the housing.

4.Install the spindle in the housing. Lightly press the spindle to seat the cone onto the spindle.

5.Support the bottom of the spindle and press

the upper bearing cone and bearing adjustment sleeve onto the spindle.

6.NOTE: The spindle housing must turn freely when seating the bearing cone and sleeve.

7.Press the two upper seals into the spindle housing. The inner lip of the seals must be UP, away from the bearing, so excess lubricant can escape.

8.Install the bearing adjustment nut (thin nut) so there is 1-1/6” clearance between the nut and the sleeve. Install the jam washer, placing the tab into the key-way. Install the bearing lock nut (thin nut) and hand tighten against jam washer and adjustment nut. See the following section for bearing adjustment.

9.Position the spindle housing horizontally with the drain hole oriented “up”. Grease through the zerk with Tiger Spindle Lubricant (part number 06540000) until the grease purges from the drain hole.

10.Install the plug into the drain hole.

BEARING ADJUSTMENT

1.Clamp the bottom end of the spindle securely in a vise so the spindle housing turns freely.

2.Position a magnetic base dial indicator on the outer diameter of the spindle housing. Locate the end of the dial indicator against the flat end of the spindle shaft. The dial indicator will now measure accurately bearing end play.

3.Tighten the bearing adjustment nut until there is .012 inch movement when the spindle housing is pried upward away from the vise jaws.

4.When there is .012 inch free play between

the spindle and housing, install the bearing lock nut (thick nut). Hold the adjusting nut securely and tighten the lock nut to 300 ft. lbs. of torque.

5.After the lock nut is tightened, there must be .001 inch to .003 inch of free play when lightly prying up on the spindle housing.

If the end play is correct, .001 inch to .003 inch, bend tabs up on jam washer to prevent the lock nut from loosening.

If the end play is NOT correct, loosen the lock nut and turn the adjustment nut as required and re-tighten the lock nut. Repeat first part of step 5.

Boom Maintenance Section 4-26

©2011 Alamo Group Inc.