Spicer Speciality Axle Division - Technical Publications
DISMANTLING HUB AND ANNULUS UNITS.
Remove brake drum retaining setscrew (84) then back off brake adjustment by turning hexagonal
adjuster screw on slack adjuster (49) in an anti-clockwise direction.
Support brake drum (2) (approx. weight - 105 lbs.) then insert 2 off 7/16" UNF x 11/2" long extractor bolts
into tapped holes provided in brake drum (2) and tighten evenly to draw drum from hub (20).
Clean inside of brake drum with a clean damp cloth (do not use paraffin).
Pull drive shaft (57) complete with sun gear and circlip (14 &13) from within axle tube, then take off
circlip and tap sun gear from drive shaft.
Lift off sun gear thrust washer (15) from end of axle arm (55).
Loosen axle tube nut pinch bolt and nut (76 & 75) then with service tool no. E399 remove axle tube nut
assembly (16, 75 & 76) from axle arm (57).
Support hub (20) with a sling, then screw three 1/2" UNF X 11/2" long bolts into tapped holes in annulus
carrier (18) and tighten evenly to draw annulus carrier assembly complete with outer hub bearing
cone (71A) off axle arm splines.
Remove outer bearing cone (71A) from annulus arm (18).
If for any reason, annulus gear (17) needs to be separated from annulus carrier (18), straighten annulus
gear lockplate tabs (73) then remove annulus gear setscrews (72) and lockplates (73), discarding
Annulus gear (17) can now be knocked from its register on annulus carrier (18).
Inspect annulus gear dowels (74) and pull out for replacement if required.
With hub assembly still supported in horizontal position it can now be pulled from axle arm (55).
Remove hub oil seals (68), followed by inner hub bearing cone (22A) from hub bore (20).
Inspect hub bearing cups (22 & 71) for wear/ damage and drift out for replacement if required.
If either bearing cup or cone needs replacing then a new matched cup and cone must
Check wheel studs (21) for misalignment, looseness or wear, removing for replacement if required.
Remove any sealant / oil seal debris present onmating faces using Loctite Chisel Gasket remover or by
carefully scraping from parts.
Manual No. 1785 Issue A
Spicer Speciality Axle Division