7. SEAL INSTALLATION
CAUTION: Protect seal lips from sharp edges of the
keyway by wrapping thin strong paper around the shaft
and coating the paper and seal lips with grease before
sliding the seal on or off the shaft. Do not expand the seal
lips more than .030" (0,75 mm) diameter.
a. Coat O.D. of seal with #3 Permatex or equivalent
sealant. Position seal squarely in seal bore with the
garter spring toward bearing. Place a square ended
cylindrical tool against seal and press or lightly tap tool
(not seal) until seal outer wall is seated .14” (3,5 mm)
inside the seal bore outer wall.
CAUTION: A shaft shoulder is NOT provided for
stopping seal. DO NOT seat seal against bearing.
b. Measure seal axial runout with a dial indicator mounted
on the shaft. If the seal axial runout is more than .010”
(0,25 mm), tap high side of seal with installation tool
until seal axial runout is .010” (0,25 mm) or less.
c. Remove shaft wrapping and reinstall the input side seal
covers, Ref. #13 and 15.
8. DRIVE REPAIR IS COMPLETE — Review instructions in
Section I for reassembly of drive onto driven shaft.
9. When seals, Ref. #19 & #20, are to be reused
(replacement is recommended), wrap the input shaft
keyway and output shaft threads with masking tape or light
weight Kraft paper to protect seal lips during disassembly.
Cover wrapping with a light coat of grease.
10. If drive is equipped with a backstop, remove output side end
cover Ref. #16, gasket Ref. #23, backstop Ref. #5A1, and
key Ref. #5A4 from output housing Ref. #11. (Note the
direction of rotation of the input shaft for proper reassembly).
11. Lay drive on bench with input shaft down. Remove housing
flange fasteners, Ref. #25. Tap out dowel pins.
SIZE 5115J05 — Remove fasteners from retaining plate,
Ref. #3A6.
SIZES 5203 THRU 5315 — Use one of the housing
flange fasteners as a jackbolt to separate input and output
housing halves using the tapped hole on input housing
flange provided for this purpose. Carefully lift off output
housing, Ref. #11.
12. Remove the shaft assemblies (J05 - 3A & 4A; J09, J14 or J25
-1A, 2A, & 4A) from input housing, Ref. #10.
13. Drive seals out from input and output housing bores if
replacement is indicated. Remove gasket material, seal
compound and any accumulated foreign matter from
seal joints, bores and adjacent sealing surfaces. Use a
solvent to clean housing and shaft assemblies.
CAUTION: On Sizes 5203 thru 5315 tapered roller
bearing cups are assembled in input housing with a slight
clearance fit. In addition, metal shims for adjusting bearing
preload and axial float are installed behind bearing cups in
housing. When handling input housing be careful that
bearing cups and shims do not fall out of input housing.
14. If drive is equipped with a backstop, check the shaft surface
and backstop sprags (inside diameter) for signs of wear. If
either component shows evidence of wear, both should be
replaced (Ref. #1A and 5A or Ref. #3A and 5A
assemblies). Also refer to Step 6 for inspection of seal
surfaces.
15. Inspect gear teeth for wear or indications of fatigue e.g.
hairline cracks at root of tooth. If one element has
undergone severe wear or broken teeth, replace the
mating element also.
16. Clean and inspect bearings for wear. Lubricate with light oil
before spinning to avoid scoring of working surfaces. Remove
any worn bearings with a wheel puller. When replacing
tapered roller bearings, replace both cups and cones. DO
NOT use new cone assemblies with worn (old) cups.
17. Use a wheel puller or press to remove gears Ref. #1A4 or
4A4 from the shaft. Exercise caution to avoid scoring shaft
seal diameter with the keyway of gear.
18. Inspect all fasteners for damage or wear and replace with
fasteners of equal grade. Grade 5 fasteners
have three (3) radial lines on the head.
Fasteners are available in kit form, Ref. #80.
19. If the shaft assemblies can be reused intact (no new parts
required), refer to Section III, Steps 6 thru 9, for
reassembly procedure. Replace all shim-gaskets with new
parts, Kit Ref. #100. On Sizes 5107 and 5115, use the
same thicknesses as removed during disassembly.
Rexnord Industries, LLC 3001 W. Canal St., Zip 53208-4200, Milwaukee, WI USA (PN-2128394) 378-200
Telephone: 414-342-3131 Fax: 414-937-4359 November 2010
e-mail: info@rexnord.com web: www.rexnord.com Supersedes 6-07
Shaft Mounted Drives Model A
Sizes 5107-5315 (Page 13 of 44)
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