Precautions
Precautions
19
Precautions during disassembly
and assembly
In order to prevent damage to
transmission parts during initial gear
movement, it is important when
assembling the transmission, to lubricate
gear bearings, needle bearings, non
sealed bearings and all other parts
under friction conditions, with the same
transmission lubricant oil.
Cleaning and handling
In order to completely clean the parts, wash them
into a bath of solvent (kerosene, for instance),
moving every part up and down slowly until all the old
lubricant and foreign material have been dissolved.
Care must be taken to avoid skin rashes,
re hazard and vapor inhalation when
using solvents.
Non sealed bearings
Immerse the bearings in clean solvent. Move them up
and down slowly in order to loosen the deposits. Dry
the bearings by means of moisture free compressed-
air. Repeat the operation until the bearings are
thoroughly clean.
Never drive the air jet directly to
bearings in order to rotate them in high
speed. That can damage bearings.
Synchronizer assemblies
Avoid bad handling of synchronizer assemblies.
Either drops or bumps when disassembling or
assembling may cause them to lock.
Housings
Clean interior and exterior of cases, covers, etc.,
thoroughly. Cast parts may be cleaned in weak
alkaline solution baths (we recommend a 7% soluble
degreasing oil solution). The parts are to remain in
the bath for the time it takes to become completely
clean. The parts cleaned in alkaline solutions should
be rinsed with clean water to remove any alkaline
trace after cleaning process.
Care must to be taken to avoid vapor
inhalation and skin rashes when using
alkaline solutions. Every cleaned part
must be totally dried at once by means
of moisture free compressed-air, or else,
by means of a lint free soft cloth, not
containing any abrasive material such
as metal lings, contaminated oil or
polishing compounds.
Inspection
A thorough and careful inspection of each part is very
important for the transmission life. The replacement
of parts showing either wear or fatigue will avoid
future expensive and foreseen failures.
Gears, shafts and synchronizer
assemblies
Whenever magna-ux is available, this process
should be used to check the parts.
Check carefully gear teeth for wear, pitting, chipping
and cracks. If gear teeth show areas where the
case hardening is worn through or cracked, the gear
should be replaced.
Check shafts for warping and excessive wear or
damaged splines.
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