|
|
|
#1
|
|||
|
|||
B2 Clearance of 5.5-6.0mm - Measure Where?
I have learned that MB has the B2 apply pin available in six different lengths to compensate for wear of the B2 friction material. (One of these is 126 277 71 75 with a length of 47.2 mm.)
A search of posts here on the subject showed that the recommended free-play of the band against the drum is from 5.5 to 6.0 mm. With one of the six available pins in place between the B2 piston and the band end, is this free-play or clearance to be checked/measured between the case's B2 bore outermost surface and the outermost surface of the B2 piston? Any information on this will be much appreciated.
__________________
Respect, protect, and maintain complex systems - whether natural or of German design, to benefit from their full potential. 1982 300SD W126.120 with an OM617.950 from a W116.120 1984 300SD W126.120 with an OM617.951 |
#2
|
|||
|
|||
Again folks, the $30 for the ATSG 68400A 722.3/722.4 manual will really make your life easier.
From page 79 of the July, 2003 printing/release: ***With B2 cover, piston, pin, band etc fully assembled but nylon guide, valve body, etc out of the way. ***From the "rest" position (B2 piston fully towards cover, pin and band snug in "rest" or "relaxed" position, measure anything from the band to a fixed reference point, shown in the images as about 2" / 50mm. This is dimension "a." Then "actuate" B2 by forcing the band to "bite" on the planetary housing. Make the same measurement as before, now "b." The 5.5-6 mm value is the difference between the "a" and the "b" measurements. ***Basically you are trying to ensure that the "slack" or release value is 5.5-6 mm by swapping in the different thrust pins.
__________________
James Marriott 2003 Buick Regal 1983 300D (228k, frau Auto) 1996 Suburban K2500 (192k, 6.5 turbo diesel/4WD towmaster 10,000) www.engineeringworks.biz 1987 300SDL junker 170k 1982 300SD junker, 265k |
Bookmarks |
Thread Tools | |
Display Modes | |
|
|