3 spd tranny problem
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Freshman User
Joined: Sep 2003
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From: nashville
3 spd tranny problem
i've got a 74 f100 that i replaced the the auto tranny with a 3 spd manual a while back, and recently i've been getting a strange sound coming from that area. even while its idling in neutral if i move the shifter(floor) around slightly it sounds like a piece of metal being thrown around inside but its only here and there, not a steady sound. but very distrubing sounding. then while i'm in 1st and 2nd it seems ok but then grinds when trying to go into 3rd. also if i coast in neutral it sounds like somethings catching as the shifter toggles around. any help is appreciated, sorry i can't give a more accurate description, i'm somewhat of an amateur.
Lead Driver
Joined: Oct 1999
Posts: 6,769
Likes: 547
From: Kalispell, MT
It's hard to guess from a distance. Your comment about the noise going away when the clutch is depressed sounds to me like you have a bad throw out bearing (also called clutch release bearing).
But those usually just make a grinding noise. Shouldn't make much difference between gears. If you really have a piece banging around inside the tranny, it'll soon find it's way into a gear tooth and lock things up tight.
To change the TO bearing, pull the bell housing back and slip the old one off the input shaft of the tranny and install a new one.
'Course, this is easier said than done - but still not the worst repair you will find.
Good luck - email me if you need specific info on procedure.
But those usually just make a grinding noise. Shouldn't make much difference between gears. If you really have a piece banging around inside the tranny, it'll soon find it's way into a gear tooth and lock things up tight.
To change the TO bearing, pull the bell housing back and slip the old one off the input shaft of the tranny and install a new one.
'Course, this is easier said than done - but still not the worst repair you will find.
Good luck - email me if you need specific info on procedure.
Lead Driver
Joined: Oct 1999
Posts: 6,769
Likes: 547
From: Kalispell, MT
Hi there Toledo,
Much as I like flatheads I wouldn't put one in a later rig unless you're feeling really creative and wanted to drive something nobody else has.
They are dependable - I drove my '48 pickup to Youngstown, Ohio in '01 for my parent's 50th anniversary party. It's also been to Spokane,Washington, Lethbridge, AB Canada, Denver,Colorado, Boise,Idaho, etc. in the past 3 years.
They are also maintenance intensive. You have to actually maintain them on a regular basis - not like today's plastic trucks.
Points, chassis lube, lube distributor, fan hub and generator, make sure you have the right amount of deflection in both Vbelts or your waterpupmps/generator/fan bearings will fail. You have to keep a toolbox with you and pay attention to what unusual sounds your truck has been making and keep the replacement parts with you for roadside repairs.
And you need to like nostalgia, curious and puzzled onlookers, the faint taste of motor oil on your lips after a long drive, but especially the sound of a flathead V8 thru dual Smithy's and straight pipes. I don't want to drive anything else.
Much as I like flatheads I wouldn't put one in a later rig unless you're feeling really creative and wanted to drive something nobody else has.
They are dependable - I drove my '48 pickup to Youngstown, Ohio in '01 for my parent's 50th anniversary party. It's also been to Spokane,Washington, Lethbridge, AB Canada, Denver,Colorado, Boise,Idaho, etc. in the past 3 years.
They are also maintenance intensive. You have to actually maintain them on a regular basis - not like today's plastic trucks.
Points, chassis lube, lube distributor, fan hub and generator, make sure you have the right amount of deflection in both Vbelts or your waterpupmps/generator/fan bearings will fail. You have to keep a toolbox with you and pay attention to what unusual sounds your truck has been making and keep the replacement parts with you for roadside repairs.
And you need to like nostalgia, curious and puzzled onlookers, the faint taste of motor oil on your lips after a long drive, but especially the sound of a flathead V8 thru dual Smithy's and straight pipes. I don't want to drive anything else.
