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#1
01-28-2014, 06:18 PM
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FSM Torque specs for water pump???
Hello all, according to the FSM the torque specs for the water pump to water pump housing specs are 10 Nm. Since this seems like just a bit beyond finger tight, is it right?
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1983 W123 300TD US spec Turbo engine, with Euro bumpers and manual climate control, and manual transmission. Last edited by whunter; 01-28-2014 at 08:02 PM. Reason: activated signature 
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#2
01-28-2014, 06:25 PM
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10nm is definitely beyond finger tight unless you've got crazy fingers.
That said yes it's right. The gasket does the sealing. The bolts just need to be tight enough to not back out. 10nm is also the torque for the thermostat cover bolts, working fine on my car so far after a recent replacement. They aren't very big bolts. I remember when doing my water pump I almost twisted the head off of one without crazy effort. I didn't have a torque wrench those many years ago...
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1979 300D 040 Black on Black - 1985 300D Maaco job (sadly sprayed over 199 Black Pearl Metallic) on Palamino http://i.imgur.com/LslW733.jpg The Baja Arizona Oil Burners Send a message if you'd like to join the fun  Left to Right - UberWasser, Iridium, Stuttgart-->Seattle,, mannys9130 Visit the W123 page on iFixit for over 70 helpful DIY guides!
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#3
01-28-2014, 07:09 PM
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Quote:
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When cryptography is outlawed, bayl bhgynjf jvyy unir cevinpl.
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#4
01-28-2014, 07:16 PM
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Quote:
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1983 W123 300TD US spec Turbo engine, with Euro bumpers and manual climate control, and manual transmission.
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#5
01-28-2014, 07:18 PM
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Quote:
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1983 W123 300TD US spec Turbo engine, with Euro bumpers and manual climate control, and manual transmission.
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#6
01-28-2014, 08:02 PM
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10 and no more
Ummmm...and don't go beyond the stated torque elsewise you can plan on fighting to remove a broken bolt...that's on my summer to do list...live and learn I didn't set the torque wrench quite right
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1985 300D 172,110mi and goin' strong
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#7
01-28-2014, 08:18 PM
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Answer
Quote:
FYI for owners....... Torque Wrenches, calibration, accuracy. Torque wrench, use it correctly or damage precision parts with brute force Torque wrench recommendations .................... Torque to Yield Bolts US & Metric Bolt Torque by Grade Extracting Broken Bolts, Studs, Extractors, Drill bits, and Taps .
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ASE Master Mechanic asemastermechanic@juno.com Prototype R&D/testing: Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician. Noise Vibration and Harshness (NVH). Dynamometer. Heat exchanger durability. HV-A/C Climate Control. Vehicle build. Fleet Durability Technical Quality Auditor. Automotive Technical Writer 1985 300SD 1983 300D 1984 190D 2003 Volvo V70 2002 Honda Civic https://www.boldegoist.com/
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#8
01-28-2014, 08:30 PM
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Yup another BTDT on a OM61x engine.
Those bolts are extremely delicate. If the gasket seal is not perfect, the bolt neck can rust, and then when you try to back one out, *snap*   Fortunately the pump housing can be removed and replaced without too much difficulty. And the housing from a OM617 will cross to an OM616. It sort of looks like Aladdin's lamp or a smoking device  depending on your perspective.
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The OM 642/722.9 powered family Still going strong 2014 ML350 Bluetec (wife's DD) 2013 E350 Bluetec (my DD) both my kids cars went to junkyard in 2023 2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles) 2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles) 1998 E300DT sold to TimFreeh 1987 300TD sold to vstech
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