BMW K bikes (Bricks)

You are not connected. Please login or register

View previous topic View next topic Go down  Message [Page 1 of 1]


1Back to top Go down   35 years with a K100 Empty 35 years with a K100 Fri Feb 19, 2021 11:03 pm

Mike-the-bike

Mike-the-bike
active member
active member
Hi All
I bought my K100 in 1985, a 1983 K100 a very early one into the UK.
It has been all over France and the UK and now resides in semi retirement in NZ.
It was laid up for a while when I was recovering from knee surgery, fuel went bad and rotted all the rubbers in the tank and wrecked the fuel pump.
Back on the road now as a sunshine superbike with new break seal kits, all oils, fuel pump and filters etc.

Got a couple little niggles crept in,
1) Speedo works fine but the trip meter has stopped working...any ideas?
2) Oil light comes on initially and will flicker on and off for a few seconds, but stays off during riding? any ideas?

Cheers
Mike

    

2Back to top Go down   35 years with a K100 Empty Re: 35 years with a K100 Fri Feb 19, 2021 11:30 pm

RicK G

RicK G
admin
admin
Hi Mike welkome to the Knuthaus. Speedo id likely a crumbled plastic gear which with a forum search you will find where they are available and the oil switch is probably clogged with crud. They can be cleaned but I have had a lot more success with new ones. The oil switch is a bit of a special but once again a search of the forum will reveal the correct thread.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

3Back to top Go down   35 years with a K100 Empty Re: 35 years with a K100 Fri Feb 19, 2021 11:31 pm

Point-Seven-five

Point-Seven-five
Life time member
Life time member
Welcome! How many miles on your bike?

The tripmeter gears are made of old cheddar cheese and it isn't unusual for some of the teeth to break off. Gear sets are available and cost about $80US.

If the oil pressure light bothers you, try replacing the switch first before going into the pump. It might not hurt to pull the oil pan and check the pickup tube and to make sure the filter doesn't have two gaskets.


__________________________________________________
Present:
1994 K75RT
1991 K100RS
1988 K100RS SE

Past:
1994 BMW K75S
1992 BMW K100RS
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

4Back to top Go down   35 years with a K100 Empty Re: 35 years with a K100 Sat Feb 20, 2021 12:45 pm

Arlina

Arlina
Moderator
Moderator
Welcome Mike Smile


2; the seal in the engine wich holds the filter could be end of life.

It's number 22;

https://www.realoem.com/bmw/enUS/showparts?id=0503-EUR-08-1985-K589-BMW-K_100_RS_83_0502,0503,0513_&diagId=11_1818


__________________________________________________
35 years with a K100 Eu-log10  K1100RS/LT - R1200RT - R1100RS (RIP) - Cagiva SST 350 Ala Verde - K75LT project - K75 Schurgers - K75S
    

5Back to top Go down   35 years with a K100 Empty Re: 35 years with a K100 Sat Feb 20, 2021 1:37 pm

brickrider2

brickrider2
Life time member
Life time member
Does Hailwood know you've appropriated his name?  Smile


__________________________________________________
1996 K1100LT
    

6Back to top Go down   35 years with a K100 Empty Re: 35 years with a K100 Sat Feb 20, 2021 5:51 pm

92KK 84WW Olaf

avatar
Life time member
Life time member
I have an 83 K100, 2 questions:

1: Are you using a 5 or 10 oil in it? Mind does not like ultra thin oil. Sounds possible because as soon as you rev it you have oil pressure. Mind did exactly that, last oil change I gave it 20w50 for a trip to Spain.
2: The oil sensor wire is badly placed and even the sensor itself suffers. Mine had been shorting out in rain. 


I suspect one or other ahead of the oil pump, but the pick up check that's been advised is easy to do.

Another occasional issue is incorrect seating of the filter can lead to reduced or even no oil pressure if the filter is not correctly tightened.


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011171 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 37,190 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 42,640 miles.

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

7Back to top Go down   35 years with a K100 Empty Re: 35 years with a K100 Sat Feb 20, 2021 11:44 pm

Mike-the-bike

Mike-the-bike
active member
active member
@brickrider2 wrote:Does Hailwood know you've appropriated his name?  Smile
Its a tribute to the Mike Hailwood a hero along with Joey Dunlop

    

8Back to top Go down   35 years with a K100 Empty Re: 35 years with a K100 Sat Feb 20, 2021 11:47 pm

Mike-the-bike

Mike-the-bike
active member
active member
@Point-Seven-five wrote:Welcome!  How many miles on your bike?  

The tripmeter gears are made of old cheddar cheese and it isn't unusual for some of the teeth to break off.  Gear sets are available and cost about $80US.  

If the oil pressure light bothers you, try replacing the switch first before going into the pump.  It might not hurt to pull the oil pan and check the pickup tube and to make sure the filter doesn't have two gaskets.
Hi 85,000 miles, sump never been off.
Had the oil pump rebuilt when the seal went between the coolant side and the oil side causing oil to mix with coolant.
Pump rebuild, full coolant/radiator flush, engin oil flushing oil changed twice then 20/50 new oil and filter

    

9Back to top Go down   35 years with a K100 Empty Re: 35 years with a K100 Sat Feb 20, 2021 11:52 pm

Mike-the-bike

Mike-the-bike
active member
active member
@Arlina wrote:Welcome Mike Smile


2; the seal in the engine wich holds the filter could be end of life.

It's number 22;

https://www.realoem.com/bmw/enUS/showparts?id=0503-EUR-08-1985-K589-BMW-K_100_RS_83_0502,0503,0513_&diagId=11_1818
I did have the oil/coolant pump rebuilt and the seal between the two had failed causing oil and coolant mixing.
Cheers
Mike

    

10Back to top Go down   35 years with a K100 Empty Re: 35 years with a K100 Sat Feb 20, 2021 11:57 pm

Mike-the-bike

Mike-the-bike
active member
active member
@92KK 84WW Olaf wrote:I have an 83 K100, 2 questions:

1: Are you using a 5 or 10 oil in it? Mind does not like ultra thin oil. Sounds possible because as soon as you rev it you have oil pressure. Mind did exactly that, last oil change I gave it 20w50 for a trip to Spain.
2: The oil sensor wire is badly placed and even the sensor itself suffers. Mine had been shorting out in rain. 


I suspect one or other ahead of the oil pump, but the pick up check that's been advised is easy to do.

Another occasional issue is incorrect seating of the filter can lead to reduced or even no oil pressure if the filter is not correctly tightened.
Hi
I am run 20/50 in the bike and have always used good quality oil.  The light flickers and goes out after about 30 seconds from starting, then is fine for the rest of the ride.

I will look at cleaning the pickup gauze and cleaning the oil pressure switch, question....do you have to drain the oil to clean the switch?
Cheers
Mike

    

11Back to top Go down   35 years with a K100 Empty Re: 35 years with a K100 Sun Feb 21, 2021 8:08 am

Dai

Dai
Life time member
Life time member
I wouldn't take the switch out. Any problem down there is likely to be corrosion on the terminals (wire and switch), especially if the boot is missing or split. If you decide to change the switch, you don't need to drain the oil. When cold the oil barely squeezes out through the hole. Okay, so I exaggerate, but you'll only lose a few cc's. If the wire is badly corroded at the female terminal there's a large chance that the PVC sheathing is also perished (hard and ready to break). Replacing the wire is, believe it or not, relatively easy but you'll need to change the connectors where it joins the main loom because the OEM is not easily available. I've used so-called 'Japanese' crimp connectors before now.

To thread a new wire, first check the pump housing from underneath and find the tunnel in the casting where the wire comes through, then take the T-cover off the HES housing on the front of the engine. Pull the old wire out. Start by pushing the new wire down through the pump housing; if you're very lucky it will slide out the bottom fairly quickly. If you're not, a pair of slim long-nose pliers and a torch are a great help to work inside the pump housing. Slide the boot onto the wire, then crimp on the female terminal and attach it to the switch. That'll stop you accidently pulling the new wire out. Now run it up through the channel next to the HES plate and replace the T-cover. Crimp new terminals into the main loom and you're done.


__________________________________________________
1983 K100 upgraded to K100RS spec, 1987 K100RT
Others...
1978 Moto Guzzi 850-T3, 1979 Moto Guzzi 850-T3 California,1993 Moto Guzzi 1100ie California
2020 Royal Enfield Bullet 500
    

12Back to top Go down   35 years with a K100 Empty Re: 35 years with a K100 Sun Feb 21, 2021 10:23 am

Point-Seven-five

Point-Seven-five
Life time member
Life time member
It probably isn't your problem, but salt and dirt can get conductive when wet, and allow enough current flow to light up the oil pressure light. I know this because a couple of my bikes used to light up the oil light whenever I rode in heavy rain.

Pull the rubber cover off the switch and clean the switch and the inside of the cover well with a toothbrush and lots of window cleaner. Let it dry and put a little electrical grease on it before you put the cover back on. That switch is in one of the nastiest places on the bike and needs a little love once in a while if you ride in the rain.


__________________________________________________
Present:
1994 K75RT
1991 K100RS
1988 K100RS SE

Past:
1994 BMW K75S
1992 BMW K100RS
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

13Back to top Go down   35 years with a K100 Empty Re: 35 years with a K100 Sun Feb 21, 2021 7:17 pm

ERasberg

ERasberg
Silver member
Silver member
Ref the oil pressure light, check that the grounding is OK. I had the oil light fail because of that.


__________________________________________________
Present
1988 K100 RS SE - VIN# 0146971K100RS - 105,000 km
1998 R1200C
1971 R75/5

Previous
1999 Virago XV125
1981 R65
    

14Back to top Go down   35 years with a K100 Empty Re: 35 years with a K100 Mon Feb 22, 2021 6:34 am

92KK 84WW Olaf

avatar
Life time member
Life time member
@Point-Seven-five wrote:It probably isn't your problem, but salt and dirt can get conductive when wet, and allow enough current flow to light up the oil pressure light.  I know this because a couple of my bikes used to light up the oil light whenever I rode in heavy rain.

Pull the rubber cover off the switch and clean the switch and the inside of the cover well with a toothbrush and lots of window cleaner.  Let it dry and put a little electrical grease on it before you put the cover back on.  That switch is in one of the nastiest places on the bike and needs a little love once in a while if you ride in the rain.
That's what I had in mind.


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011171 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 37,190 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 42,640 miles.

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

15Back to top Go down   35 years with a K100 Empty Re: 35 years with a K100 Mon Feb 22, 2021 1:17 pm

Paddy1

Paddy1
Silver member
Silver member
can a lower idle cause this?
same result if you start the bike with full choke/advance?


__________________________________________________
Riding Beemers since 1988
1986 K100RT, 1985 K100RS, 2001 K1200LT, 2004 R1100S, 2004 R1150, 1980 R65, 2014 Zero FX
    

16Back to top Go down   35 years with a K100 Empty Re: 35 years with a K100 Mon Feb 22, 2021 1:18 pm

Paddy1

Paddy1
Silver member
Silver member
+1 to all
plastic gears...


__________________________________________________
Riding Beemers since 1988
1986 K100RT, 1985 K100RS, 2001 K1200LT, 2004 R1100S, 2004 R1150, 1980 R65, 2014 Zero FX
    

17Back to top Go down   35 years with a K100 Empty Re: 35 years with a K100 Mon Feb 22, 2021 1:20 pm

Paddy1

Paddy1
Silver member
Silver member
+1 comments by point seven five


__________________________________________________
Riding Beemers since 1988
1986 K100RT, 1985 K100RS, 2001 K1200LT, 2004 R1100S, 2004 R1150, 1980 R65, 2014 Zero FX
    

View previous topic View next topic Back to top  Message [Page 1 of 1]

Permissions in this forum:
You cannot reply to topics in this forum