Dan Pockrus wrote:
>
> ... by the fact that the Bentley and Haynes books have very few
> torque values in them. After pulling the threads out of two jam nuts in
> the midst of a valve adjustment last night, it seems like a good idea to
> find a torque value for the jam nuts. Anybody have one (other than
> "tight") ?
>
> Dan Pockrus
> Systems Integration Engineer
> Efficient Networks, Inc.
> dpockrus@efficient.com
> http://www.efficient.com
Torque settings on bolts go by the size of the thread, so normally two
similar sizes would get the same setting. Some threads are on tempered
steel studs, such as the crankshaft and head studs. Here is a list for
the 'A' and 'B' series engines, hexagonal nuts, ( 12V & 18V 12 sided
ones differ a little; and XPAG, see later.)
Big end bolts 40 lb.ft.
rocker adjuster nuts 22
sump drain plug 25
Carb stud nuts 2 ( thats what the book says, 2.)
clutch flywheel bolts 30
cylinderhead nuts 50 ( 40 on early 1098cc Midgets,)
tappet chest ( side covers) 2
later sunken tappet chest covers 5
distributor clamp 5
flywheel bolts 40
gudgeon pin, ( wrist pin,) 25
main bearing nuts 70
manifold nuts 15
oil filter bolt 15
oil pump nuts 14
rear engine plate 5/16" bolts 20
rear engine plate 3/8" bolts 30
rocker shaft support nuts 25
rocker cover nuts 4
sump bolts 6
timing chain cover 1/4" bolts 6
timing chain cover 5/15" bolts 14
thermostat housing nuts 8
water pump nuts 25
spark plugs 30
crankshaft pulley nut 70
camshaft nut 70
steering wheel nut 35
universal joint bolts 30
gearbox drive flange nut 100
'U' bolt nuts on rear axle 20
brake backplate nuts 18
differential drive flange ( pinion seal,) 120
18V & 12V 12 sided nuts,
big end nuts 33
crankshaft pulley nut 70
camshaft nut 65
XPAG/XPEG engines,
main bearing nuts 63
cylinderhead 50
flywheel 50
big ends 27
small end pinch bolt 33
rocker shaft 8mm 27
rocker shaft 10mm 42
timing cover 20
clutch cover 33
sump 27
manifold clamps 20
oil pump nuts 12
Hope thats some use chaps.
Neil
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