The ring gear is fitted to the tractor flywheel, this is what the starter motor engages to start the engine.
These wear over time; the most common symptom of a worn ring gear is the starter motor running but failing to turn the engine over. If you can turn the engine over 1/4turn manually, retry the key and it starts. The fault is almost certainly the ring gear.
Make |
Model |
Engine |
Case International Harvester |
JX55 |
|
Case International Harvester |
JX60 |
|
Case International Harvester |
JX1060C |
|
Case International Harvester |
JX65 |
|
Case International Harvester |
JX1070C |
|
Case International Harvester |
JX70 |
|
Case International Harvester |
JX70U |
|
Case International Harvester |
JX75 |
|
Case International Harvester |
JX80U |
|
Case International Harvester |
JX85 |
|
Case International Harvester |
JX90 |
|
Case International Harvester |
JX90U |
|
Case International Harvester |
JX95 |
|
Ford New Holland |
3010S |
|
Ford New Holland |
3435 |
|
Ford New Holland |
3830 |
|
Ford New Holland |
3935 |
|
Ford New Holland |
4030 |
|
Ford New Holland |
4135 |
|
Ford New Holland |
4230 |
|
Ford New Holland |
4330 |
|
Ford New Holland |
4430 |
|
Ford New Holland |
4635 |
|
Ford New Holland |
4835 |
|
Ford New Holland |
5635 |
|
Ford New Holland |
6635 |
|
Ford New Holland |
7635 |
|
Ford New Holland |
TD55D |
|
Ford New Holland |
TD60D |
|
Ford New Holland |
TD65D |
|
Ford New Holland |
TD70D |
|
Ford New Holland |
TD75D |
|
Ford New Holland |
TD80 |
|
Ford New Holland |
TD80D |
|
Ford New Holland |
TD85D |
|
Ford New Holland |
TD90 |
|
Ford New Holland |
TD90D |
|
Ford New Holland |
TD95 |
|
Ford New Holland |
TL65 |
|
Ford New Holland |
TL70 |
|
Ford New Holland |
TL80 |
|
Ford New Holland |
TL90 |
|
Ford New Holland |
TL100 |
|
Ford New Holland |
TN55 |
|
Ford New Holland |
TN60A |
|
Ford New Holland |
TN60VA |
|
Ford New Holland |
TN65 |
|
Ford New Holland |
TN70 |
|
Ford New Holland |
TN75 |
|
Ford New Holland |
TN80F |
|
Ford New Holland |
TN85FA |
|
Ford New Holland |
TN90F |
|
Ford New Holland |
TN95FA |
|
Ford New Holland |
TN95VA |
|
Ford New Holland |
TN95F |
|
Fiat |
45-66 |
|
Fiat |
50-66 |
|
Fiat |
55-66 |
|
Fiat |
55-90 |
|
Fiat |
60-66 |
|
Fiat |
60-76 |
|
Fiat |
60-90 |
|
Fiat |
60-93 |
|
Fiat |
60-94 |
|
Fiat |
L60 |
|
Fiat |
65-66 |
|
Fiat |
65-90 |
|
Fiat |
65-93 |
|
Fiat |
65-94 |
|
Fiat |
L65 |
|
Fiat |
70-66 |
|
Fiat |
70-76 |
|
Fiat |
70-90 |
|
Fiat |
72-93 |
|
Fiat |
72-94 |
|
Fiat |
L75 |
|
Fiat |
80-66 |
|
Fiat |
80-90 |
|
Fiat |
82-93 |
|
Fiat |
82-94 |
|
Fiat |
85-90 |
|
Fiat |
L85 |
|
Fiat |
88-93 |
|
Fiat |
88-94 |
|
Fiat |
L95 |
|
Fiat |
446 |
|
Fiat |
450 |
|
Fiat |
466 |
|
Fiat |
500 |
|
Fiat |
540 |
|
Fiat |
550 |
|
Fiat |
566 |
|
Fiat |
580 |
|
Fiat |
600 |
|
Fiat |
640 |
|
Fiat |
666 |
|
Fiat |
680 |
|
Fiat |
766 |
|
Fiat |
780 |
|
Fiat |
980 |
|
Fiat |
1000 |
|
Fiat |
1180 |
|
OEM Ref |
OEM |
153623541 |
OEM |
153623568 |
OEM |
4602143 |
OEM |
82982157 |