NM on thermostat / suburban79

  • moinsen,


    ich will an meinem Sub79 (siehe Foto) alle KuehlSchlaeuche wexeln.


    Dazu die Frage ... ob ihr wisst,
    ob ich auch hier am Thermostat ganz bestimmte NM anziehen muss
    um das Teil wieder fest zu bekommen.


    Tja, ich habs inner Tabelle leider net gefunden ...


    wie fest mach ich das denn?


    GrzStef

  • 25 bis 35 tf lbs - also danke fuer eure antworten, super.


    grzstef



    ps - ich finde im netz nur ne auflistung fuer den small block,
    denke aber die sollte auch fuer n big block passen.


    sry dass ich das nicht als tabelle hinbekomme ... hier so ...


    eben nur noch ft lbs in nm umrechnen.


    Part Bolt Size Minimum Torque: Maximum Torque:
    Camshaft sprocket 5/16"-18 15 ft. lbs. 25 ft. lbs.
    Connecting rod 3/8"-24 30 ft. lbs. 35 ft. lbs.
    *Cylinder head (oiled) 7/16"-14 60 ft. lbs. 70 ft. lbs.
    Exhaust Manifold to Cylinder Head (Center) 3/8"-16 25 ft. lbs. 30 ft. lbs.
    Exhaust Manifold to Cylinder Head (Ends) 3/8"-16 15 ft. lbs. 20 ft. lbs.
    Fan Blade Assembly to Flange 5/16"-24 15 ft. lbs. 20 ft. lbs.
    Flywheel Housing to Crankcase 3/8"-16 25 ft. lbs. 30 ft. lbs.
    Flywheel Housing plate cover 1/4"-20 10 ft. lbs. 12 ft. lbs.
    Intake Manifold to Cylinder Head 3/8"-16 25 ft. lbs. 35 ft. lbs.
    Main Bearing Cap bolts (oiled) 7/16"-14 60 ft. lbs. 70 ft. lbs.
    Oil Pan Drain Plug Special 25 ft. lbs. 30 ft. lbs.
    Oil Pump Cover to Body 1/4"-20 6 ft. lbs. 9 ft. lbs.
    Oil Pump to Rear Bearing Cap Bolt 7/16"-14 45 ft. lbs. 50 ft. lbs.
    Pulley to Balancer Hub 3/8"-24 15 ft. lbs. 20 ft. lbs.
    Carburetor Nuts 5/16"-24 12 ft. lbs. 15 ft. lbs.
    Water Pump Bolts 3/8"-16 30 ft. lbs. 20 ft. lbs.
    Thermostat Housing 3/8"-16 25 ft. lbs. 35 ft. lbs.
    Oil Filter bolt 1/2"-13 20 ft. lbs. 30 ft. lbs.
    Starter Bolts 3/8"-16 25 ft. lbs. 35 ft. lbs.
    Generator Bolts 3/8"-16 25 ft. lbs. 35 ft. lbs.
    Fuel Pump Bolts 3/8"-16 25 ft. lbs. 35 ft. lbs.
    Valve cover screws (inch lbs) 1/4"-20 20 in. lbs. 25 in. lbs.
    Temperature switch 1/2"-pipe thread 15 ft. lbs. 20 ft. lbs.
    Spark plugs 14 mm 25 ft. lbs. 25 ft. lbs.

    Das Schiff ist im Hafen sicher,
    aber dafuer nicht gebaut.

  • Im original shop manual steht für das Thermostat housing des 7,4l: 37Nm bzw. 27 Ft.Lbs

    - it's much better to have tools you don't need than need tools you don't have -
    IF ALL ELSE FAILS, CHANGE THE MUFFLER BEARINGS :D

    If you make something idiot proof, someone will create a better idiot

  • The OEM water outlets were manufactured from aluminum. GM decreased the specified torque for the water outlet bolts in stages from 30 ft-lbs in 1979 to 21 ft-lbs by 1987, because they discovered that the aluminum housings had a tendency to crack and the higher torque initially used was unnecessary to produce adequate crush on the gasket. To keep from cracking the water outlet during installation, make sure the thermostat is properly seated in its groove then tighten the two 3/8" bolts alternately in three equal stages to a final torque of 20-25 ft-lbs. Note that the water outlet is not a critical attachment. It is more important to have equal torque on the two bolts than to focus on an exact final value.

    Das Schiff ist im Hafen sicher,
    aber dafuer nicht gebaut.

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