KIT-SEAL 4523609 - Caterpillar

Illustration 45
Scratch along the length of the seal diameter.
Use again -
only if the scratch can be removed with a 6V6147 Polishing Wheel.
Illustration 46
Groove near the pulley end of the bearing diameter.
Use again
Illustration 47
Wear step along the circumference of the bearing diameter.
Do not use again
Pulleys
Wear in pulley grooves is caused by foreign material between belts and grooves. Pulley grooves that have wear must be inspected and reconditioned, if possible, since increased amounts of wear will decrease belt efficiency. Wear on the pulley groove changes the shape of each side of the groove from a flat surface to a curve. Wear also increases the width of the groove. These conditions gradually let the belt fall deeper into the groove until it runs more than 1.588 mm (.0625") below the top of the groove. See Illustration 48.
Illustration 48
Heavy pulley groove wear. Belt rides more than 1.588 mm (.0625") below the top of the groove.
To check groove wear in the field, tightly wrap a new belt around the pulley and measure the distance the belt runs above, or below, the top of the groove. Belts which run above the edge of the pulley will have a good service life if adjusted correctly. See Illustration 49.
Illustration 49
Good belt position.
When a new belt runs more than 1.588 mm (.0625") below the top of the groove, the pulley can be measured according to the procedure and specifications given in Guideline For Reusable Parts, SEBF8046, "Cast Iron And Steel Engine Pulleys". Information concerning measurement and cutting tools necessary for reconditioning specific cast iron and steel pulleys used in Caterpillar Engines is also listed. Refer to Chart A of this Guideline for specifications for 3208 water pump pulleys.
How To Use Pulley Specification Chart
When using Chart A, use Illustration 50 as a reference to find the exact areas of the pulley to be measured.
Pulley part numbers are found on a flat surface near the center of the pulley. If the part number is worn off, measure the diameter and approximate groove dimensions. Locate the measurements on the chart and then find the pulley part number.
Illustration 50
Pulley nomenclature.
Chart A
3208 Water Pump Pulley Specifications
Part
Number Original
Pulley
Diameter Minimum
Diameter
Over Pins Pin
Diameter Groove
Angle Groove
Width Groove
Depth
9N3674 139.70 (5.500) 142.93 (5.627) 11.112 (.4375) 36 _ba_ 12.70 (.500) 15.04 (.592)
9N3899 139.70 (5.500) 142.93 (5.627) 11.112 (.4375) 36_ba_ 12.70 (.500) 15.04 (.592)Note: Unless stated otherwise, all dimensions are mm (").
Visual Inspection of Pulleys
Visually inspect the pulley for cracks and other damage. If a pulley has cracks, do not use again.
Illustration 51.
Use again -
after removing high spot.
Illustration 52.
Use again -
after removing all high spots and sharp edges that could damage belts.
Illustration 53
Cracked pulley.
Do not use again
Illustration 54
Notch in pulley groove can damage belt.
Do not use again
Illustration 55
Material missing in pulley groove can damage belt.
Do not use again
Illustration 56
Casting flaw in pulley grooves.
Do not use again
Miscellaneous Parts
Clean miscellaneous parts, like washers, retainers, bolts, spacers and snap rings, in a cold solvent tank.
Illustration 57
Nicks on the edge of the inside diameter of a spacer.
Use again -
after any burrs are removed with a half-round file.
Illustration 58
Nicks on the face of a spacer.
Use again -
after any burrs are removed with a file.