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106
FIAT· 850 PASSENGER CARS
TRANSMISSION TROUBLE DIAGNOSIS AND CORRECTIONS
Noisy Transmission.
POSSIBLE
CAUSES
1) Excessive backlash of gears in mesh due to gear
wear.
2) Gears, bearings, synchronizers or gear bushings
damaged.
3) Shafts misaligned or out of center due to loose
mounting nuts or lock rings.
4) Dirt or metal chips in the lubricant.
5) Insufficient 011 level In transmission case.
Transmission Shifts Hard.
POSSIBLE
CAUSES
I) Defective link of control rod
to flexible joint.
2) Speed selector and engagement lever control rod
twisted.
3) Control rod.to-speed selector and engagement
lever joint damaged.
4)
Speed selector and engagement lever worn.
5) Stiffened striker rods In case seats.
6) Sliding sleeves and gears bound in their seats
due to the presence of dirt in splines or breakage
of synchronizer springs.
7) Improper quality of transmission lubricant.
8) Misadjusted clutch linkage and clutch make de-
clutching impouible.
REMEDIES
1) Rebuild transmission and replace worn gears.
2) Rebuild transmission and replace worn parts.
3) Disassemble transmission and check components, repair
and replace as required.
4) Disassemble transmission, clean all components and make
sure that they are sound.
Replace lubricant.
5) Add FIAT W 90 M (SAE 90 EP) oil up to lower brim of filler
plug seat.
REMEDIES
1) Disassemble gearshift mechanism and adjust fit between
rod and joint.
2) Remove rod and straighten.
3)
Remove and replace flexible joint.
4) Remove front extension and replace lever.
5)
Remove rods, locate cause of stiffening and repair as reo
quired.
6) locate cause of binding, clean and replace damaged parts.
7) Drain case and dean thoroughly. Refill with FIAT
W 90
M
(SAE
90 EP)
oil.
8) Rebuild clutch throwout mechanism.
Adjust as directed
under
«
Clutch
».
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