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Viscous fan cut-in temperature? OM606
Hi,
Does anyone know where I might be able to find out what temperature a viscous fan will begin to couple for an OM606? I've had a good search using search engines but mixed results. Nothing in the FSM about temperature -just how to remove and replace Or, if someone knows it off the top of their head? Thanks
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1995 E300 Diesel |
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Should be about 100*C at the clutch. I don't know what that registers on the temp gauge.
Sixto 87 300D |
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They leak and fail pretty frequently. Most of the time you wouldn't notice except for a temperature rise when idling.
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-Evan Benz Fleet: 1968 UNIMOG 404.114 1998 E300 2008 E63 Non-Benz Fleet: 1992 Aerostar 1993 MR2 2000 F250 |
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100 is pretty much ball park, my cars needle will stick to 85-90 on the highways and regular driving but will rise to 95-100 in traffic and long red lights.
And when moving off you hear the fan roar (its the same sound a boeing makes when it applies its airbrakes on landing). but as said above, the OM606 clutch is leaky and will fail to operate when it runs low on its fluid - you can refill it will toyota 3000 cst fluid but its not everyones game or you can buy a new one $150 or near - there are some on ebay for 50 but idk if they work like they should.
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2012 BMW X5 (Beef + Granite suspension model) 1995 E300D - The original humming machine (consumed by Flood 2017) 2000 E320 - The evolution (consumed by flood 2017) |
#5
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My paper FSM for the 602/603 engines says (section 20 - Cooling, page 310) that the bimetallic strip "alters its shape" and opens a valve at approximately 71ºC allowing oil to move from the "storage" chamber to the "working chamber." This engages the clutch. The coolant temperature should be 90-95ºC when this happens.
With the clutch disengaged, the maximum fan speed should be 1000 RPM. Clutch engaged, the fan speed will limit at 3300 RPM. Not that fan RPM is not necessarily the same as engine RPM. The 606 should be similar. Jeremy
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"Buster" in the '95 Our all-Diesel family 1996 E300D (W210) . .338,000 miles Wife's car 2005 E320 CDI . . 113,000 miles My car Santa Rosa population 176,762 (2022) Total. . . . . . . . . . . . 627,762 "Oh lord won't you buy me a Mercedes Benz." -- Janis Joplin, October 1, 1970 |
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ya i jsut changed mine a year ago and looks like its fizzling out again. electric fan is going on next.
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1993 e300 1995 e320 1994 e320 2006 s500 4matic 2004 Jeep wj overland 2001 Ducati 748 2004 Honda shadow aero |
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Mine starts engaging at around 95C per the idiot gage.
Where are you from that you have a 93' 606??? Didnt know they made them in Europe that early.
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Terry Allison N. Calif. & Boca Chica, Panama 09' E320 Bluetec 77k (USA) 09' Hyundai Santa Fe Diesel 48k (S.A.) |
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Hi,
I'm in Sydney Australia. Build date on the front of the engine is dated August 1993 and on the data sticker in the boot is dated April 1993. This was the first of only five to ever be sold here. There was a bad recession here in AUS at that period and it was seen to be a bit extravagant spending $130,000 AUS. Having so few makes it a challange at times with mechanics only knowing the 603's 12valves. In fact, I'm not sure what I would do without forums like this!
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1995 E300 Diesel |
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Quote:
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2012 BMW X5 (Beef + Granite suspension model) 1995 E300D - The original humming machine (consumed by Flood 2017) 2000 E320 - The evolution (consumed by flood 2017) |
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Fan speed?
Quote:
Jeremy
__________________
"Buster" in the '95 Our all-Diesel family 1996 E300D (W210) . .338,000 miles Wife's car 2005 E320 CDI . . 113,000 miles My car Santa Rosa population 176,762 (2022) Total. . . . . . . . . . . . 627,762 "Oh lord won't you buy me a Mercedes Benz." -- Janis Joplin, October 1, 1970 |
#11
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Quote:
Goes 75 on highways at 70mph? My thermostat is new and highter, I got a 85 degres thermostat as I am on WVO, this is OK in town, as soon as I take the highway the temperature drop? Olivier
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E300TD year 2000. RUSTY SOLD cost a fortune to maintain on the road but run well on WVO Second Merc died due to corrosion ( NOT rust) How can mercedes get away with that for so long? Third lasted a month then went away... Fourth now... Corroded too... |
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how can your engine maintain a lower temperature than the thermostat rating, the usual case is that the engine will be 5 degrees celcius higher than the Tstat installed, meaning 85 degree thermostat would force the engine to run at 85 or 90. - Thats what Ive known - I maybe wrong on this.
Im still on the lookout for a 80 degree Wahler thermostat for my car - cant seem to find one though. btw its a few magnitudes hotter here in texas than in Scotland.
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2012 BMW X5 (Beef + Granite suspension model) 1995 E300D - The original humming machine (consumed by Flood 2017) 2000 E320 - The evolution (consumed by flood 2017) |
#13
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I'm sure not all the out of spec thermostats are caught by quality control. And we should compare sender resistance and/or IR thermometer readings to verify that the gauge is accurate.
Sixto 87 300D |
#14
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Quote:
__________________
E300TD year 2000. RUSTY SOLD cost a fortune to maintain on the road but run well on WVO Second Merc died due to corrosion ( NOT rust) How can mercedes get away with that for so long? Third lasted a month then went away... Fourth now... Corroded too... |
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