Results 1 to 13 of 13

Thread: Grease nipples in rear suspension linkage?

  1. #1
    apriliaforum expert MartDude's Avatar
    Join Date
    Nov 2008
    Location
    Shropshire, UK
    Posts
    1,325

    Grease nipples in rear suspension linkage?

    I've been putting off servicing my rear suspension linkage for too long, so I'll be doing this over the winter.

    Has anyone fitted grease nipples to the dogbone? Having searched for quite a while, I've found several posts about contemplating doing this, but none where someone's actually done it.

    I've a slight worry that drilling & tapping for nipples might weaken the dogbone - or am I being a touch paranoid?

    Also, any recommendations for the best location for grease nipples?

    Thanks
    It flies sideways through time
    It's an electric line
    To your zodiac sign
    I've got a Yellow Machine

    2002 Futura, Silver - now sold

    1996 Moto Guzzi California 1100i

    2005 Moto Guzzi California EV

    Calis are Cool!

  2. #2
    apriliaforum expert DanV990's Avatar
    Join Date
    Sep 2010
    Location
    NE, PA
    Posts
    4,166
    Noel put zerks on his dogbone. The first link below tells you how he did it. The other links are for some more threads on greasing the dogbone if you want to do some more reading.

    http://www.apriliaforum.com/forums/s...highlight=zerk

    http://www.apriliaforum.com/forums/s...highlight=zerk

    http://www.apriliaforum.com/forums/s...=1#post2812590

    http://www.apriliaforum.com/forums/s...highlight=zerk

    http://www.apriliaforum.com/forums/s...86#post1645886
    Quote Originally Posted by theknurl View Post
    Zerks or grease nipples;
    lubing the dogbone or conrod and swingarm is a pain,
    to make it easy,the extra stuff you need;

    3- 90 deg Zerk fittings or grease nipples
    matching drills and taps
    RTV silicone
    3mm x ~23mm washer*
    thin screwdriver
    EP grease
    magnet
    wash pan and solvent
    vise or press
    grease gun
    NEW SUSPENSION PLATES

    > loosen front head pipe, remove rear head pipe
    > support frame, remove rear wheel and countershaft sprocket
    > remove swingarm and chain
    > remove dogbone and original suspension plates
    > CAREFULLY remove bushings from dogbone and swingarm
    > with the magnet remove the needles
    > CAREFULLY pry the seals out*
    > press the bearing races out, wash them and the needles
    > drill and tap the holes in the center 90 deg to the long axis, on the same side of the dogbone
    > mount the Zerks 90 deg to the long axis
    > drill and tap the swingarm in the center of the lug, right in front of the tire
    > mount the Zerk pointing to the left
    > with 3mm washer press the 6 races back in*
    > with a light coat of RTV silicone on the outside remount the 6 seals
    > put some grease in the races, refit the needles, make sure that the races ARE FULL OF NEEDLES, none left out [the dealer left 2 out @ swingarm recall]
    > put the bushings in
    > put the swingarm in, remount CS sprocket
    > mount the dogbone with the Zerks on the bottom pointing LEFT
    > mount your NEW SUSPENSION PLATES
    > mount the pipes
    > mount rear wheel, adjust chain
    > lube the Zerks with the grease gun

    *optional for those of you that live where it rains, there is an 18mm x 24mm x 4mm double lipped with a spring seal available, if you use the 4mm wide seal use a ~3.5mm washer to seat the bearing races, so there is a gap between the races

    now when you change your oil and filter, on the same side, lube the 3 Zerks, an easy straight shot [grease nipples, for those of you on the other side of the road]

    Noel-theknurl
    NB; shortened '73 CR250 wrist pin needle bearings replaced the 2 missing ones
    1985 Honda VF500F Interceptor Red
    1985 Honda VF500F Interceptor Blue
    1992 BMW K1100RS ABS
    1993 Honda CBR600 F2
    1995 Ducati 916 Monoposto
    1999 Aprilia RSV Mille



  3. #3
    apriliaforum newb
    Join Date
    Feb 2010
    Location
    Charleville, Queensland
    Posts
    24
    Adapt, adopt and improve.

  4. #4
    apriliaforum prov-nov wrenched's Avatar
    Join Date
    Dec 2012
    Location
    UK midlands
    Posts
    74
    No but now you mention it.....
    As it happens and after one or two scary reports surfaced I have the fairings off my Fut and am about to check the pins and bushes. The addition of nipples is so obvious; when it's pointed out! I'd have no worries about stress in the link but, as I think the description says, I'd put them on the mid-plane and at 'top' or 'bottom' as fitted to the bike. Th'ol Duc had just such on it's swinging arm. Being new and not entirely familiar with the Futuras swing-arm I'll reserve comment on that, but it's probably only a case of siting them where you can get at them with the bike assembled. Would give much peace of mind. I'd have to restrain my enthusiasm a bit though, as it would be possible to push the o-rings out under the pressure. I read recently about a mod which eliminated the end-float which seem to be present in the fulcrum pins. If this is the case it would be as well to do this mod at the same time - or get some bearings with proper built-in seals.
    Blue '03 RST stock-ish, mapping tweaks, rear hub brg mod.
    It's NOT raining!!

  5. #5
    apriliaforum prov-nov wrenched's Avatar
    Join Date
    Dec 2012
    Location
    UK midlands
    Posts
    74
    I managed, fairly easily to my surprise, to pull the expansion box free and dismantle the rear suspension linkage last night and bought some shiny new nipples in the bearing shop at lunchtime. I'll go home tonight and look to see if I've an M6 tap in the box. I should correct my misapprehension above; the seals are captive in the 'drawn cup' needle roller races so no worry about blowing them out with the grease gun. They were getting dry although just about serviceable. The spacer/inner track I got round to cleaning before bed time was pitted slightly but as it's range of movement and speed is very low I don't see a problem for a bit longer. The dogbone has clearly been having a fight at the rear end with one triangular plate. No wonder when you consider there's nothing to control thrust or take up the rather large axial clearance. I thought about using aluminium to make thrust washers at first of all but aluminium against aluminium isn't that clever. Then decided maybe Nylon would be a better bet, or 'Tufnol' which I think is nicer to machine.
    If/when I get that far I'll post some pics but there is a thread already.
    Blue '03 RST stock-ish, mapping tweaks, rear hub brg mod.
    It's NOT raining!!

  6. #6
    apriliaforum expert vonDutch's Avatar
    Join Date
    Sep 2008
    Location
    Netherlands
    Posts
    2,222
    I've been thinking about it as well, but personally, I wouldn't use zerks but just drill a tiny hole and use one of these to lubricate:
    Last edited by vonDutch; 08-01-2013 at 04:11 PM.

  7. #7
    apriliaforum prov-nov wrenched's Avatar
    Join Date
    Dec 2012
    Location
    UK midlands
    Posts
    74

    Suspension link greasers

    Here are some pics of my effort at fitting greasers. These were 6mm coarse threaded. The threads on the nipples were tapered so I drilled 4.8mm holes in the pedestal drill and tapped with a taper then a plug tap using the pedestal drill to align the tap. I generally mess up if I try to start taps by hand. I left the roller housings in place and I did it without taking the swinging arm off the bike. I am NOT recommending this. It meant a lot of lying on the floor and swearing trying to get the needle rollers back into the eye of the swinging arm, and of course it's pretty difficult to be clean. Also if I'd taken the swinger off the bike I could have positioned the grease in the eye facing forward instead of down which would have been nicer. I don't presently have a castellated socket for what look s like a special nut.
    PS who was it that welded one of the pipes into the back of the expansion box?Name:  IMAG0183.jpg
Views: 1673
Size:  49.4 KBName:  IMAG0188.jpg
Views: 1669
Size:  40.1 KBName:  IMAG0190.jpg
Views: 2012
Size:  25.2 KBName:  IMAG0191.jpg
Views: 1715
Size:  22.7 KBName:  IMAG0192.jpg
Views: 1819
Size:  44.0 KB
    Blue '03 RST stock-ish, mapping tweaks, rear hub brg mod.
    It's NOT raining!!

  8. #8
    apriliaforum expert soofle616's Avatar
    Join Date
    Jul 2007
    Location
    Middletown, CT
    Posts
    3,308
    maybe this is a stupid question but how does the grease get into the bearings if the bearings themselves aren't drilled for the zerk? Is it just that the grease is entering between the two races and finding it's way around the bushing in the middle to fill any available space?
    I'm on the app store! Check out Solitaire: Slide it's free!

  9. #9
    apriliaforum prov-nov wrenched's Avatar
    Join Date
    Dec 2012
    Location
    UK midlands
    Posts
    74
    Each pin runs in two short bearings with a gap between them. The bearings only have seals on the outside, the inward facing ends don't have any seals. At least that's the case on mine and when I replace I'll ask for single sealed variants at the bearing shop.
    Last edited by wrenched; 08-09-2013 at 08:48 AM. Reason: omission
    Blue '03 RST stock-ish, mapping tweaks, rear hub brg mod.
    It's NOT raining!!

  10. #10
    apriliaforum expert old git's Avatar
    Join Date
    Sep 2009
    Location
    Worcester, UK
    Posts
    681
    Wrenched, interested to know after 2 years if this has been successful in the long term, am making a 'to do' list for the winter and thinking if something like this or just the 'ordinary' grease service is going to be done.
    Fire Red Falco, my 1st Love.
    sidestand mod (Hayabusa), charging mod, larger sealed airbox, Gabro chip lower Buell rider pegs, braided lines, custom rider seat, home brew hard panniers, OHlins bouncer
    Add Two Tone RS Touring Futura'04, knock-off levers, charging mod, 05map, NWS hugger, Ohlins shock, 12v socket, lowered rider pegs, 848 twin exhausts, revamped plate hanger with pannier support.
    What's not to love!!.er

  11. #11
    apriliaforum expert deefred's Avatar
    Join Date
    Sep 2004
    Location
    Sweden, Linköping
    Posts
    5,559
    I think two years is too short to say.
    Also with the very limited movement it will require the bearing to be torn down to check that there are no dry spots unless grease is coming out uniformerly around the seals.
    2001 RST Futura in stream Silver.
    Mods: Modified Öhlins fork from mille R, EBC brake discs, HEL front brakelines, Carbon RS 250 front fender, Wiring mod for charging. Engine related:05 map, Iridium plugs, tuneboy, derestriced intake, old mille airboot, staintunes exhaust. Lambda bung hardbrazed in the "breadbox". Öhlins mille R rear shock with 110N/mm spring and the integrated hydraulic preload adjuster. LED Voltmeter installed inside the dash for monitoring charging. Duc 999 radial m/c for brake and clutch. EBC 320mm brake discs
    NWS hugger. Equipment: Famsa tankbag,
    CBR 600 -07 MOSFET R&R FH008EE providing stable 14.4 - 14.5 V (with my wiring mod). Daytona heated grips with mccoi pwm controller and automatic chain oiler

  12. #12
    apriliaforum prov-nov wrenched's Avatar
    Join Date
    Dec 2012
    Location
    UK midlands
    Posts
    74

    Suspension greasers

    As it happens a few weeks ago I did take the linkage to pieces as the suspension was beginning to squeak. The weather had once again penetrated one of the bearings and last time I looked I knew it wouldn't be that long before I'd have to renew the bushes. This I have now done but the greaser mod hasn't been as effective as I'd hoped, never the less I still think you have a better chance of longevity with them. The lack of any kind of proper mud guarding is in my view the biggest problem. Both front and back. This is billed as a tourer for heavens sake.
    Sadly After doing all that the squeak is exactly the same!
    Blue '03 RST stock-ish, mapping tweaks, rear hub brg mod.
    It's NOT raining!!

  13. #13
    apriliaforum expert flossy's Avatar
    Join Date
    Jan 2012
    Location
    Seq/Qld Auzzieland
    Posts
    652
    A + for your original effort in your quest anyway wrenchy, great to see you had a go, still looking to pull my arm apart to get to the main bearings, did grease all the links a while ago, looked like some dogbone seals were not even present on one side so slipped in an o ring, and spaced it with a steel washer to align it up better, now to make or improvise a tool to get the arm off,

Similar Threads

  1. Play in the suspension linkage system
    By AlesR1F in forum RST1000 Futura (all years)
    Replies: 2
    Last Post: 11-17-2008, 05:48 PM
  2. Rear suspension linkage bearings....
    By att in forum ETV1000 CapoNord (2001-2007)
    Replies: 2
    Last Post: 07-03-2008, 12:03 PM
  3. rear suspension linkage bearing kit needed
    By bigfoot2 in forum RS125 Euro-archive
    Replies: 2
    Last Post: 05-02-2006, 06:17 PM
  4. Advice on rear suspension linkage removal
    By westy3457 in forum RST1000 Futura (all years)
    Replies: 19
    Last Post: 11-21-2005, 10:06 AM
  5. rear suspension linkage info reqd
    By crmc33 in forum RSVR and RSVR Factory (2004-2009)
    Replies: 1
    Last Post: 08-03-2005, 01:41 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •