Question about 1990 Moto Guzzi 750 Targa

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I have a 1995 750 targa with oil leak from bevel box onto rear disc. I have dismantled the assembly as far as I can, but cannot remove the drive plate with the cush drive vanes on it, to get at the oil seal behind it.Can you tell me if this is possible without having to resort to a dealer workshop? Many thanks, Paul Rees.

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  • Moto Guzzi Master
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Good thinkin stay away from dealers-they want to sell new bikes-please purchase a manual in the borders or online multo grazie

Posted on Jul 31, 2009

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2002 1150rt, leaking oil through the centre of the rim and wheel stud holes, have checked gearbox oil (full) rear diff oilseal still intact ? any idea's


The leak is, as you say,is not from the seal it is from the press fitted parts on the gearset. Take the wheel off and you may find some oil in the central 'hole' on the bevel box. Maybe a previous owner used to much heat changing the bevel box large output bearing previously? The bad news is you will need a replacement final drive (plenty of good ones on ebay). All R11XX bevel boxes are interchangeable, although there are differences in the drive ratio (stamped near the breather). Having said all this, I do know of someone who stuffed a sock into the central hole to soak up the leak and carried on for another 6k!

Jan 26, 2014 | 2004 BMW R 1150 RT (ABS)

1 Answer

I have a Honda pressure washer with Cat Pump 3dx29gsi, it runs rough when I pull the trigger and after 5 min of running, oil starts to spit out of small hole on red fill cap on pump


Sounds like you need to open the pump and inspect the pistons and seals. It appears that the seals & or pistons are worn and the water is by passing into the crankcase of the gear box. A sure sign oil coming out of the filler cap & the oil in the gear box will look milky ( water & oil mixed) This is not a difficult task to perform. You can purchase seal kits on line or in your area from suppliers of multi brand pressure washers who usually stock plenty of spare parts for various brands; many of which are interchangable. if you buy from a brand specific supplier you will pay much, much more. I suggest you remove the pump and dismantle it, inspect the parts to determine what parts are required and take it from there . If you are not experienced in doing mechanical repairs use your camera / Phone and snap each step as you dismantle the pump. First Remove the complete pump from the engine and then remove the pump head from the gear box - about 6 bolts and a few fittings . In the head there are several check valves ( usually 3 inlet & 3 outlet) these need to be removed to be cleaned, inspected, check o-rings, springs and valve seat ( usually a small metal disc ) which in many cases is the cause of low pressure due to dirt lodged between the disc & seat. Remove one at a time note how they are assembled, take a photo and place in a small zip-loc bag each one individually & mark the bag in relation to where each one was removed.
The same goes for the seals and washers on the pistons, these are located in the housing and depending on the brand are stacked according to the design of the seals , again take photos , tag & bag them. I suggest to tie each set together exactly as they were assembled when you removed them; it will make it a lot easier for you to assemble them correctly when the time comes to install them. Finally clean out the crankcase to remove the milky oil & water mixture.

Go for it Its not rocket sicence.

Jun 03, 2012 | Caterpillar CAT Pump Pressure Washer Pump...

1 Answer

I have oil dripping onto the catalytic converter


It could be the gear position switch neutral switch on the rear of the gearbox if oil dripping from rear
Could also be output shaft seal going
A good site for help from other oil head riders is ukgsr as the only way to find leak is to remove drive parts till you find leak

Apr 12, 2012 | 2001 BMW R 1150 GS

1 Answer

Kitchenaid mixer leaking oil


Get a copy of the Repair Part List for your model at Kitchenaid.com
Grease inside the Planetary Assembly (the shaft is tight fit to the Planetary
plate at the factory and is not designed to be taken apart, so do not use
any hard object such as a screwdriver to separate them) over times can
turn to liquid and leak down the bowl. Removing the Planetary assembly
and adding Kitchenaid Food Grade Grease is not a task for a novice.
To properly remove the Planetary Assembly, you must work from inside
the Transmission Housing: Remove in this order: Retaining Clip(25), Bevel Gear(21),
Retaining Pin(18), Worm Follower Gear(19). Use a soft mallet to tap out the Shaft
of the Planetary Assembly(15). Re-assemble it in the reverse order.
Note: The Bevel Gear is extremely tightly fit on the shaft, and a pin punch
must be used to remove from the shaft.

Jul 14, 2011 | KitchenAid KP2671 Professional 6 Series...

1 Answer

When do you change the fluid in the rear differencial. I was told by a mechanic that the rear differencial fluid was low and had metal shavings in it, and that the fluid needed to be changed and that it...


I'd say yes. The differential fluid is often overlooked by oil change technicians, even though it's something that should be topped off periodically.

It probably would cost more than that to repair it once it wears out.
Axle Housing Assembly Removal & Installation To Remove:
  1. Lift the vehicle.
  2. Drain the lubricant from the rear axle housing.
  3. Remove the rear axle assembly from the vehicle.
  4. Remove the brake caliper brackets from the rear hubs.
  5. Remove the rear cover and gasket from the rear axle housing.
  6. Remove the rear axle shafts from the vehicle.
  7. Remove the rear differential assembly from the vehicle.
  8. Remove the brake backing plates from the rear hubs.
  9. Remove the rear drive pinion shaft yoke and seal from the drive pinion.
  10. Remove the drive pinion from the rear axle housing.
To Install:
  1. Install the drive pinion into the rear axle housing.
  2. Install the rear drive pinion shaft yoke and seal onto the drive pinion.
  3. Install the rear differential assembly into the vehicle.
  4. Adjust the differential side bearing preload and the backlash.
  5. Perform a gear tooth contact pattern check.
  6. Install the brake backing plates onto the rear hubs.
  7. Install the rear axle shafts into the vehicle.
  8. Install the rear cover and gasket onto the rear axle housing.
  9. Install the brake caliper brackets onto the rear hubs.
  10. Install the rear axle assembly into the vehicle.
  11. Refill the lubricant in the rear axle housing.
  12. Lower the vehicle.
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I think that changing the fluid would take about an hour, and depending on the garage, and the labor rate, that they might elect to take the rear cover off of the differential, and drain it that way and replace the fluid once it was put back on. He could inspect the gears while the cover was off and tell you how bad it was.'

Do you hear any clunking or gear mesh noises from the rear when putting it in gear or running the vehicle?


Some mechanics would simply top off the fluid and wait until it wears out, which could be several thousand miles in the future.

Use gear oil for it of the recommended viscosity in the service manual.

Generally thicker than motor oil.

So, adding fluid would cost only the amount of the fluid plus some labor.
A bottle of fluid might cost $9.99 or so depending on where you get it.

You might be able to do this yourself if you crawl under there, remove the fill plug at the top, and just add gear oil. If there isn't enough room you might drive it up on some ramps and then crawl under there.

Jul 29, 2010 | 2004 GMC Envoy

1 Answer

When i put the bike into gear it will not move. You can hear grinding from the rear. Any ideas?


Hi
That sounds like the bevel box gears at the rear wheel or the drive shaft to them
Pull back the rubber boot at rear of engine to check if shaft is rotating
remove rear wheel & check the output shaft from the bevel box is rotating
If not then remove bevel box & check splined join to drive shaft

Ride Safe
Bike-Doc

Jul 07, 2010 | 1998 Yamaha V Star Classic

1 Answer

Hi I have an xvz 1300 , hasa hi pitch noise comming from g/ box at high speed Thank you greg


Unfortunately, you can get noise from the transmission, clutch basket, drive shaft, pinion gears or rear wheel on the Royal Star. No way to tell which you have so:

Barring a failure of the clutch, a change to a multi-grade synthetic oil THAT DOES NOT HAVE AN ENERGY-CONSERVING SEAL ON THE BOTTLE will quiet (but not necessarily eliminate) gear and clutch noise. Energy-conserving oils tend to make a wet clutch slip. Try Shell Rotella-T (T6) synthetic, available at Walmart for about $19.00 a gallon. Broken clutch springs and bent or warped clutch and friction plates can also be noisy, but that is typically experienced across the whole speed range; fixing a problem like that would involve replacement of the clutch assembly. The transmission gears are straight-cut for strength, and tend to be noisier than bevel-cut gears, still, if the noise remains annoying after an oil change, have the dealer or, better yet, a veteran Royal Star rider, evaluate the noise to see if it is excessive.

The drive shaft on the Royal Star can also make noise if both ends are not properly lubricated; tourers have found that Honda Moly 60 paste on both ends at about 15,000 mile intervals will eliminate that aggravation.

Hypoid gears in the final drive can also be noisy. Short of having the drive disassembled and replacement shims installed, changing to a good synthetic 75W-140 lubricant will quiet or eliminate the whine.

Splines and pins in the final drive and rear wheel assembly can also cause noise. Remove the rear wheel, put a thin layer of Honda Moly 60 paste on the pins, dampers and in the drive spline, ditto with the mating spline on the final drive. I relubricate all of these every time I change rear tires, probably more often than necessary, but it's convenient to do when the wheel is off.

Mar 18, 2010 | 2000 Yamaha Royal Star Venture

2 Answers

Water leaking from under dash


Could be coming in from many places. Hole in the floor, firewall... The most common place for a leak is around the windshield, especially if it has already been replaced and not properly sealed.

Aug 12, 2008 | 1994 Honda Civic Del Sol

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