Maintenance & Service Manual
R & HR32000 3 & 6 Speed LD
Oil Seals, Gaskets and Retaining Rings
CLEANING AND INSPECTION
Replacement of spring load oil seals, "0" rings, metal sealing rings,
gaskets and snap rings is more economical when unit is disassembled than
premature overhaul to replace these parts at a future time. Further loss of
Clean all parts thoroughly using solvent type cleaning fluid. It is
lubricant through a worn seal may result in failure of other more expensive
recommended that parts be immersed in cleaning fluid and moved up and
parts of the assembly. Sealing members should be handled carefully,
down slowly until all old lubricant and foreign material is dissolved and parts
particularly when being installed. Cutting, scratching, or curling under of lip of
are thoroughly cleaned.
seal seriously impairs its efficiency. Apply a thin coat of Permatex No.2 on
CAUTION: Care should be exercised to avoid skin rashes, fire hazards
the outer diameter of the oil seal to assure an oil tight fit into the retainer.
and inhalation of vapors when using solvent type cleaners.
When assembling new metal type sealing rings, same should be lubricated
with coat of chassis grease to stabilize rings in their grooves for ease of
assembly of mating members. Lubricate all "0" rings and seals with
against a block of wood to dislodge solidified particles of lubricant. Immerse
recommended type Automatic Transmission Fluid before assembly.
again in cleaning fluid to flush out particles. Repeat above operation until
bearings are thoroughly clean. Dry bearings using moisture free compressed
If magna-flux process is available, use process to check parts. Examine
air. Be careful to direct air stream across bearing to avoid spinning. Do not
teeth on all gears carefully for wear, pitting, chipping, nicks, cracks or scores.
spin bearings when drying. Bearings may be rotated slowly by hand to
If gear teeth show spots where case hardening is worn through or cracked,
facilitate drying process.
replace with new gear. Small nicks may be removed with suitable hone.
Inspect shafts and quills to make certain they are not sprung, bent or splines
twisted, and that shafts are true.
Clean interior and exterior of housings, bearing caps, etc., thoroughly.
Cast parts may be cleaned in hot solution tanks with mild alkali solutions
Housing, Covers, etc.
providing these parts do not have ground or polished surfaces. Parts should
Inspect housings, covers and bearing caps to be certain they are
remain in solution long enough to be thoroughly cleaned and heated. This will
thoroughly cleaned and that mating surfaces, bearing bores, etc., are free
aid the evaporation of the cleaning solution and rinse water. Parts cleaned in
from nicks or burrs. Check all parts carefully for evidence of cracks or
solution tanks must be thoroughly rinsed with clean water to remove all traces
condition which would cause subsequent oil leaks or failures.
of alkali. Cast parts may also be cleaned with steam cleaner.
CAUTION: Care should be exercised to avoid skin rashes and inhalation
of vapors when using alkali cleaners.
All parts cleaned must be thoroughly dried immediately by using moisture-
free compressed air or soft, lintless absorbent wiping rags free of abrasive
materials such as metal filings, contaminated oil or lapping compound.
The importance of careful and thorough inspection of all parts cannot be
overstressed. Replacement of all parts showing indication of wear or stress
will eliminate costly and avoidable failures at a later date.
Carefully inspect all rollers, cages and cups for wear, chipping or nicks to
determine fitness of bearings for further use. Do not replace a bearing cone
or cup individually without replacing the mating cup or cone at the same time.
After inspection, dip bearings in clean light oil and wrap in clean lintless cloth
or paper to protect them until installed.