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W115 Instrument Cluster Questions
Hello all,
I have looked around for a few of these topics but haven't really found the answers I need. To start with I have a 1976 300D, auto trans. I purchased it at auction so I really don't have any history on it. I am slowly going through it and restoring a system at a time and I am trying to prepare for fixing my instrument cluster issues below: 1. The previous owner removed all back light blubs from the dash for some reason, is there any logical reason to do this, or would some other issue necessitate this? 2. The oil pressure gauge is stuck at max pressure and never moves, even when the engine is off. Is it possible to take them apart and repair them, or should a replacement be located. 3. My temperature gauge reads normally most of the time but occasionally, while driving, it will max out. The car does not act like it is overheating and the motor does not seem any hotter than normal so I suspect either a faulty sending unit or a chaffed wire somewhere. Are there any known issues that could cause that. 4. The clock does not work. Not a huge issue but I would like to get it working if possible. It is a quartz movement. Is there a modern replacement movement that can be used in place of the factory one if it is not repairable? Thanks in advance everyone. |
#2
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cant think of a reason for no bulbs, and it sounds as though you have some bad gauges, If I were you rather than trying to work out the electrical , gauge gremlins , Id source a new old used dash pod, easy to take out and replace
__________________
Ron 2015 Porsche Cayman - Elizabeth 2011 Porsche Cayman - Bond,James Bond Sadly MERCEDESLESS - ALways LOOKING ! 99 E320 THE Queen Mary - SOLD 62 220b - Dolly - Finally my Finny! Sadly SOLD 72 450SL, Pearl-SOLD 16 F350 6.7 Diesel -THOR 19 BMW X5 - Heaven on Wheels 14 38HP John Deere 3038E Tractor -Mean Green 84 300SD, Benjamin -SOLD 71 220 - W115-Libby ( my first love) -SOLD 73 280 - W114 "Organspende" Rest in Peace 81 380 SL - Rest in Peace |
#3
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Kinda sounds like someone got a little crazy with that instrument cluster. I've attached a couple pics below that show some oil gauge and instrument cluster lighting details related to my reply.
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************* If you end up needing a oil pressure gauge or cluster bulb holders send me a PM. I'd love to move some of the "treasure" stash to someone who actually needs it! But Ron's idea of sourcing a complete, working cluster is also a good one in that it could save you time and headache factor - just plug it in and go!
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- Greg - 1973 220D, The Prodigal Benz 1974 240D |
#4
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Give up on the oil pressure gauge. It is just worn out. Replacement is the only option. But the good news is that entire clusters are not expensive on the bay.
There was a time when removing the bulbs and painting them orange was a thing. It gave you a better glow and was an attempt to ape the BMW lighting. I am only guessing here but the POS likely had a reason to remove the bulbs but then needed the car so he dropped n the gauge cluster and never finished his project. The clocks are easy to repair IF YOU HAVE THE RIGHT EQUIPMENT. Just look into Hemmings under services and check out clock repair. Hollywood Speedometer has been reaping these VDO clocks since forever and can make it work like it should. In other words: The cost for clock repair is not backbreaking. |
#5
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PM me , I have a guy that will repair your clock with a lifetime guarantee
__________________
Ron 2015 Porsche Cayman - Elizabeth 2011 Porsche Cayman - Bond,James Bond Sadly MERCEDESLESS - ALways LOOKING ! 99 E320 THE Queen Mary - SOLD 62 220b - Dolly - Finally my Finny! Sadly SOLD 72 450SL, Pearl-SOLD 16 F350 6.7 Diesel -THOR 19 BMW X5 - Heaven on Wheels 14 38HP John Deere 3038E Tractor -Mean Green 84 300SD, Benjamin -SOLD 71 220 - W115-Libby ( my first love) -SOLD 73 280 - W114 "Organspende" Rest in Peace 81 380 SL - Rest in Peace |
#6
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I appreciate the responses everyone. Sounds like a new (to me) cluster might be a good place to start. If I can pull the one I have apart and fix it, that would be ideal. Otherwise I can get a new one, send it off to have the clock fixed if necessary, and still drive the car with the original installed. As far as the blubs go, I think most of them are rolling around in the glove box.
After the cluster is sorted just have the vacuum locks to sort out and a few small oil leaks to fix and it will be back to factory performance.
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'76 Sahara Yellow 300D |
#7
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if you pull the cluster you may see some of the bulb traces broken or corroded , those can be jumpered with a wire , the dim bright knob can also be bypassed , those are normally bad with corrosion
__________________
Ron 2015 Porsche Cayman - Elizabeth 2011 Porsche Cayman - Bond,James Bond Sadly MERCEDESLESS - ALways LOOKING ! 99 E320 THE Queen Mary - SOLD 62 220b - Dolly - Finally my Finny! Sadly SOLD 72 450SL, Pearl-SOLD 16 F350 6.7 Diesel -THOR 19 BMW X5 - Heaven on Wheels 14 38HP John Deere 3038E Tractor -Mean Green 84 300SD, Benjamin -SOLD 71 220 - W115-Libby ( my first love) -SOLD 73 280 - W114 "Organspende" Rest in Peace 81 380 SL - Rest in Peace |
#8
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The rubber parts can be replaced if you can find the parts. I think the official line is they are not rebuildable but they are. Just work with them some and you will find how they come apart. Go slowly at first. These are rather tricky to figure out the first time you tear into them. After that you will find they are no big deal. |
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