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The Talmud says... (#346353, p. 440-9)
Posted by Siegfried (more from Siegfried) on Tue, 26 Jun 2012 06:04:16
In Reply to: Re: I see thanks,, Cmyles , Mon, 25 Jun 2012 20:18:14
Chris, Paul,
I used to think that on those trannies P=N+latch, but it isn't. Here goes a quotation off 400-9 page, Saab 900 Service Manual 4:2 Automatic transmission p/no 346353 (M1986-92). But as far as I see it, Chris is right - there should not be any significant difference whenever you do it a full 'die Ordnung muss sein' or a lazy way.

Operation in position N
With the engine running, the primary regulating valve regulates system pressure which is directed to the selector valve and throttle valve. It also allows fluid to reach the secondary regulating valve. The secondary regulating valve regulates the pressure to the torque converter and lubrication of the front end of the planetary gear train. Identical pressure is directed to the rear end of the gear train. The valve returns excess fluid to the oil pan.

Operation in position P
An internal linkage from the selector valve detent lever engages the parking pawl with teeth formed on the driven shaft ring gear.
With the engine running, the operation of the hydraulic system is identical to that in position N, except that the selector valve directs the system pressure to the rear servo. This is due to the design of the selector slide, and application of the rear servo or brake band fulfils no function in this selector position.

Later on page 440-30 there go 'Checking the fluid level' instructions.
Apply the handbrake. Allow the engine to run for at least 15 seconds at idling speed in position D, then 15 seconds in position R and finally 15 seconds in position P. Following this, check the fluid level with the engine idling and position P still selected.
The marking on the dipstick are for cold fluid at +40C and hot fluid at +90C
Note that at extremely low temperatures the fluid level may fall well below the normal minimum level for cold fluid, which is +40C.
The difference between the MAX and MIN marks is 0.5 litres.

Just two cents.

Zig

P.S.
Am I right finding some gramma (punctuation and the use of articles) misprints? And I have to say that I'm surprised to the american manual (see the manual p/no above) referring to metric units.

posted by 87.228.10...
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