Grease points
Hi All.... I am in the process of fully servicing my G... and have thought about greasing joints etc... however i have no clue where to look or how to go about it... I dont even own a grease gun ! so your help and advice would be very useful to me...
which make/type of grease gun should i buy (that wont break the bank)
is the same grease ok for all the grease points? what should i buy?
where should i be looking for grease nipples? and how many? how much grease do i squeeze in? (haven't seen any obvious nipples)
pics would be helpful... the manuals i have are vague..
I want to get this done as it seems the servicing done on my G was cursory as its been out of the MB service network for about 20,000 miles... so i doubt much of the specialist servicing has been done . and prevention is better than cure.
Ive just bought gear oil from MB for the diffs and some gearbox oil for the transfer case.. no records of it being done in last decade or so... the car has a genuine 103,000 miles so im not too concerned... (auto gearbox oil/filter done 3k miles ago)(engine oil/filters just done)(valve clearences just done which were well out)
so Im really keen to make sure all the bits that swivel are lubed properly...
you help please G Techs
Does anyone know how many grease points, this is a job I have yet to complete on mine.
Does anyone know how many grease points, this is a job I have yet to complete on mine.
Yours was done not so long ago Sir ... :-)
Does anyone know how many grease points, this is a job I have yet to complete on mine.
Yours was done not so long ago Sir ... :-)
Excellent thanks... I have an air powered grease gun I use on my pagoda, great bit of kit.
check the grease in your front swivels too
Over the years I noted that the grease which is pumped into the greasing nipples on the prop shafts will find its way out again through the grease nipple as the prop shaft rotates and, over time, it ends up being splattered on the adjacent bodywork and chassis.
I came across one G however, which had screw caps instead of grease nipples, on the props hafts.
Is this how they come ex-factory?
Hi it doesn't come back out the grease nipple, it can't, there's a spring loaded one way ball valve in a grease nipple, it's the excess grease that gets squeezed out of the bearings that gets splattered around. I recently had a new factory propshaft that had greasing points to be used with a needle point gun, and I have seen them capped as well, I suppose that's more just to reduce the likely hood of the nipple being damaged.
...there's a spring loaded one way ball valve in a grease nipple...
Yes, but with centrifugal force from the spinning prop shaft, I think some does get back out.
No, that would only make the ball seat harder if it did anything.
They are made like that to stop dirt getting in and grease getting out. The only reason grease would get put of the nipple is if the ball is stuck inside, or the spring ha collapsed and is not pushing it back out. The grease around is just excess grease from greasing, doesn't really matter, protects the underside at least.
Post No: 6 contributed by 'JASONGDS' summarizes the topic well.
There are indeed 3 grease points per prop. shaft and they are three prop. shafts to be greased. One grease point will be found at either end of the prop. shaft on the UJ and one will be found on the slide joint noticeable by a thinner tube fitting into the larger.
The grease points are of a conical face requiring; as pointed out by one thread above, a needle point grease end on the grease gun. I found it easier to convert these to the agricultural type, conventional grease point. The grease point fitted at the UJ ends are a different size to the one fitted on the slide joint.
I do not remember the sizes of these any longer nor do I have the thread pitch sizes. You will nee to remove the ones fitted to your shaft and get a supplier to size and supply you with the conventional grease points.
The only other greasing to be done is filling the front swivel housings which in the latter models have a 14 mm allen head bung usually fitted to the rear of the hub as one looks rearwards from the front of the vehicle. The earlier models may have a hexagonal head to the bung. The front wheels have to be removed for this operation. Please. always use axle stands to support your vehicle when ever jacking up to do any repairs or maintenance work.
Do make sure no one will be playing with the steering wheel whilst greasing the swivel hubs as this will need to be done at a full lock. The danger is, should you have a finger in the hub to check for grease and one turns the steering wheel whilst checking, you ain't going to have a finger left!
Use the flexible extension to feed into the bottom of the swivel housing and pump away. Fill until the grease reaches the bung level. From an empty chamber it can take up to two hundred strokes to fill the swivel chamber. The swivel housings should be checked and replenished every two years.
The prop. shafts, however, should be greased annually or more frequently, especially if 'Fording' or more so, wet off-roading. Fording can suck out grease as, when running the vehicle, grease heats up and becomes more liquid, going through a cold medium just sucks out the grease. Grease the prop. shaft end until grease just begins to ooze out of the seals or the joints and for the slide joint 5 strokes has be suggested by the workshop manual.
I bought a Clarke Grease gun today that takes standard sized cartridges, plus a flexible attachment to allow me to use it in the confines of the G underbody...
Ive seen the grease nipples on the Drive shaft couplings (UV Joints) i am at a loss as the where there might be more... are there any on the suspension joints? anti roll bars? steering? I saw the ones on the prop shafts while i was changing the diff oil.. which was well overdue...anyone greased a 460 before?