1986 Honda GB400F steering head bearings?

[Danae]

Hallo, hope this is the right place. Is '86 classic enough? Heheh.

I needed to replace the steering head bearings for the GB. I didn't measure the height of the top one (you can only get one size of bearing for the GB 400, really), and when we put it in, it got to about 3mm to go, and got stuck! It's a tapered roller bearing - this one, actually. And it sticks out the top! I didn't want to keep smashing the thing in. A google search led to nothing.

So, do I keep smashing the thing in? It appears to have stopped against a ridge on the inside of the yoke.

I don't have a picture of the bearing sticking out, but imagine a bit of silver is poking out the top of the yoke (also imagine the cap is not there...).

[hayd3n]

have you tried using a g clamp or similar to push it in? also a bit of heat around the headstock will help expand the metal and make it a little bit easier to install

[Danae]

have you tried using a g clamp or similar to push it in? also a bit of heat around the headstock will help expand the metal and make it a little bit easier to install

I haven't tried this yet - I do have a G-Clamp although it is isn't too big. It should be able to span the whole headstock though...

Also, here are the photos:



This one shows how much it sticks out by



And this one shows the ledge it is resting against. It's pretty hard up against it, certainly there is not another 5mm left to go...

[hayd3n]

I haven't tried this yet - I do have a G-Clamp although it is isn't too big. It should be able to span the whole headstock though...

Also, here are the photos:



This one shows how much it sticks out by



And this one shows the ledge it is resting against. It's pretty hard up against it, certainly there is not another 5mm left to go...

well it looks like itll have to stay that way then,
have you got the old bearings to measure? and compare?

[gammaguy]

Looks like you have the wrong bearings

[Danae]

well it looks like itll have to stay that way then,
have you got the old bearings to measure? and compare?

Got the old ones. The new ones are certainly taller. My mechanic says just grease it on up and put it back together - the taller ones are fine. I can't get any roller bearings in the right size unless I wanna get them made, anyway.

[Danae]

Looks like you have the wrong bearings

I know...but these are the only ones that are associated with the GB400 across every bike parts store. New ones that fit would have to be custom made. My mechanic has said it's fine and to just put it back together. Anything happens and he'll have to deal with it!

[gammaguy]

Crap

The correct ones are available aftermarket

[Kickaha]

Were the old bearings individual ball bearings?

If that is an aftermarket tapered rolled kit you've fitted then it is quite common for the race to protrude slightly, if it has bottomed out against the ridge then it is in as far as it will go and is fitted correctly

[Danae]

Crap

The correct ones are available aftermarket

I'll try and find some before winter, I guess.

Were the old bearings individual ball bearings?

If that is an aftermarket tapered rolled kit you've fitted then it is quite common for the race to protrude slightly, if it has bottomed out against the ridge then it is in as far as it will go and is fitted correctly

Old bearings were ball bearings - the tapered ones are definitely taller at the top. I might try finding some that fit perfectly before winter rolls around - I don't trust water not getting into the headstock.

[husaberg]

I will add this here as a few people don't know how to access this information.
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Upper: 26 x 48.5 x 15.2
Lower: 30 x 50 x 14.4
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Honda CM450A/C/E (82-83)
Honda CB500/K1/K2 (71-73), CB500T (75-76)
Honda CX500 C/D (78-81)
Honda FT500 Ascot (82-83)
Honda GB500F/F2
Honda GL500/I (81-82)
Honda VT500 Ascot (83-84), VT500ED, VT500C/FT (83-84)
Honda CB550K/K1 (74-7Cool, CB550F (75-77), CB550SC (83)
Honda CBX550F (82-83)
Honda CB650 (79-82), CB650C (80-81), CB650SC (82-85), CBX650ED/SCD
Honda CX650C (83), CX650ED
Honda GL650/I (83)
Honda VT700C (84-85)
Honda CB750K (69-7Cool, CB750A (76-7Cool, CB750F (75-7Cool
Honda VFR750C (83)
Honda VT750C (83)
Honda GL1000 (75-76)
Honda GL1000L (76)

Upper: 30 x 48 x 14
Lower: 30 x 48 x 14
Kawasaki KH250A5 (76)
Kawasaki KZ250A
Kawasaki EX350B1 (83)
Kawasaki KZ350A1/A2/B1 (81-82), KZ350B2/B3 (87-8Cool
Kawasaki KH400A3-A5 (76-7Cool
Kawasaki KZ400A1/A2 (77-7Cool, KZ400B1/B2/C1 (78-79)
Kawasaki KZ400D/D3/D4 (74-77), KZ400H1 (79), KZ400S/S2/S3 (75-77)
Kawasaki ZX400D1-D5 (80-83)
Kawasaki KZ440A1-A4/D1-D5 (80-83), KZ440B1/B2 (80-81)
Kawasaki H1 500 C/D/E/F (69-75), KH 500A8 (76)
Kawasaki KZ500 (69-73)
Kawasaki H2 750 A/B/C (72-75)

Upper: 30 x 48 x 14
Lower: 30 x 52 x 17
Kawasaki EL250B2/B3 (88-89), EL250E1/E2 (91-92), EL250D4/D5 (93-94)
Kawasaki EX250E/E2/F2-F4 (86-90), EX250 F6/F7/F8/F9,F10/ F11 Ninja250R (92-97), EX250 H1-H5 (90-94)
Kawasaki ZX400H1/H2, ZXR400R
Kawasaki EX500A1-A7 (87-93), EX500D1-D4 (94-97)
Kawasaki KZ550A1-A4/C1-C4 (80-83), KZ550D1 (81)
Kawasaki KZ650B1-B3/C1-C4/D1/D2/E1/F1/H/ H1-H3
Kawasaki KZ750B1-B4 (76-79), KZ750E1-E3 (80-82)
Kawasaki KZ750G1 (80), KZ750H1-H4(80-83), KZ750K1/K2 (83-84), KZ750M1 (82), KZ750T
Kawasaki KZ900A4/B1 (76)
Kawasaki Z1 900A/B (73-75)
Kawasaki Z1R Series (78-80)
Kawasaki KZ1000A1-A4/B1-B4 (77-80), KZ1000D1 (7Cool, KZ1000D3/G1 (80)

Upper: 25 x 48 x 15.2
Lower: 30 x 48 x 15
Yamaha FZR400R
Yamaha SXR400
Yamaha SX500B/C/D/E (75-7Cool, TX500/A (73-74)
Yamaha XS550RK/RJ (82-83), XZ550RK/RJ (82-83)
Yamaha FZ600 (86-8Cool
Yamaha SRX600S/SC (86), SRX600T
Yamaha TX650/A (73-74)
Yamaha XJ650G/H//J/K (80-83), XJ650LH (81), XJ650LJ/LK/RJ (82-83)
Yamaha XS6501/1B/XS2 (70-72), XS650B-H/2F (75-81), XS650SE-SH (78-81), XS650SJ/SK (82-83)
Yamaha TX750 (73-74)
Yamaha XJ750J/K/MK/RH/RJ/RK (81-83)
Yamaha XV750H/J/K/MK (81-83), XV750SE (82)
Yamaha XV920J/K/MK (82-83), XV920RH/RJ (81-83)
Yamaha XV1000K/L Virago (83-84)

Upper: 26 x 47 x 15
Lower: 30 x 55 x 17
Honda NSR250R/F
Honda VTR250 (89-91)
Honda CBR400R (87)
Honda CBR400 R/R
Honda NS400RF/RG (85-86)
Honda VFR400ZG/RG
Honda CMX450C (86-87)
Honda CX500TC (82)
Honda VF500C (84-85), VF500F (84-86), VF500FE/FIIE/FF
Honda VT500C (85-86)
Honda CBR600 (89-90)
Honda CBR600F (87-90), CBR600 FM-FR (91-97), CBR600H
Honda VT600CJ (87), VT600C N-R (92-94)
Honda VT600C/CD Shadow VLX (88-97
Honda CX650T (83)
Honda NT650 (88-89)
Honda NT650J Revere
Honda CB700SC (84-86)
Honda VF700C (84-87)
Honda VF700F/S (84-85)
Honda VFR700F/F2
Honda CB750C/F/K (80-82)
Honda CB750F N-S (92-95)
Honda CB750FA/FB/FC/ F2C
Honda CB750SC (84-85)
Honda CBX750FE/F2F (84-86)
Honda VF750C (82-83)(8Cool
Honda VF750CC/CD/CE/SC/SD
Honda VF750F (83-84)
Honda VF750 F D/E/F (83-85)
Honda VF750FD
Honda VF750S (82-83)
Honda VFR750 (90-93)
Honda VFR750F/F2 (82-87), VFR750F L-S (90-95)
Honda VFR750FG/FH/FJ/FK/ FL
Honda VT800 (88-89)
Honda VT800C Shadow(8Cool
Honda PC800 Pacific Coast (89-9Cool
Honda CB900C (80-82), CB900F A/B/2B/C/2C (80-82), CB900FS(94)
Honda CBR900RR (93-9Cool
Honda CB1000C (83), CB1000F S (95)
Honda CBR1000 (87-93)
Honda CBR1000F (87-8Cool(90-96)
Honda CBX B/C (81-82)
Honda VF1000F (84-85), VF1000FE/FF/F2F, VF1000R (85-86)
Honda GL1100 (80-83), GL1100C/AC/DC/IC, GL1100D2D/AD/A/IA/DA, GL1100RB/RC/D/ID/DD
Honda VF1100C (83-86), VF1100S (84-85)
Honda VT1100C (85-89), VT1100C R-S (94-95)
Honda GL1200 (84-87)
Honda GL1500 (88-91)
Honda GL1500 AP-AR (93-94)
Honda VTX1800C (02)

Upper: 26 x 47 x 15
Lower: 26 x 47 x 15
Honda CR80RL-RR (90-94 )
Honda CR125R (82-89)
Honda NX125 (88-90)
Honda XL200R (83-84)
Honda XR200R (81-87), XR200RE/RF/RG/RH/RJ
Honda ATC250R (83-86)
Honda CR250R (82-89), CR250RE/RF/RG/RH/RJ/RK
Honda XL250R (82-87), XL250R E/F (84-85), XL250R J/K/L (88-90)
Honda XR250RE/RF/RG/RH/RJ/RK, XR250R N-R (92-94)
Honda XL/XR350R (83-85)
Honda XR350RD/RE/RF/RG/RH/RJ/RK
Honda XR400R (97-9Cool
Honda CR450R (81)
Honda CR480R (82-83)
Honda CR500R (84-89)
Honda XL500R (82)
Honda XR500R (81-84)
Honda XL600R (83-87), XL600RC/RF (85)
Honda XL600RD/LD/RE/RF/RG/V-VH(Transalp)
Honda XR600R (85-89), XR600RH/RJ/RK
Honda CB750F/K/L (79)
Honda CBX1000 (79)

[gammaguy]

nice dredge

[husaberg]

Dredging is what coaster's do best. We would coal mine but ............


www.sudco.com/steering.html

I will put a Word version here if it fits as a lot of times web pages disappear.

done a bit of a sheadsheet i might fix it up a bit latter.

[Tazz]

I'd hope you're sorted considering you were asking in March, but for future reference ignore your mechanic until you've taken your bearing (or measurements) into somewhere like Saeco (or ask a local engineering/farm equipment place for somewhere similar).

[motorbyclist]

FYI bike is now a write off

We have since found, however, that you can still buy GB500 bearings from the likes of davidsilverspares.co.uk

the chassis is that same between the 400 and 500 models