The Mamabenz (300SD) has been converted to 134, these last coupla weeks
it has been getting less and less coolie, was fine when we got it 2.5 yr
ago. I put a can of 134 into it the other night and it was BLOWING ICE
COLD in 85+F temp. So I don't know about performance issues, it seems
to be OK.
The boy brought his SD here over Mem Day and is leaving it, it had R12
in it and was working OK when we got it 4 years ago, but it has leaked
down and does not cool. I was thinking to put one of these alternatives
in it and see if I can get it to BLOW ICE COLD, but was also thinking I
should replace the seals and such -- so does anyone know where to get a
set and where to put them on the system?
--R
On 6/8/11 1:22 PM, Dieselhead wrote:
Take it back to r12/freeze 12 or the Cathey test blend. An MB r12
system is marginal at best. When converted to 134, it is good to only
about 85 F and worse than running with the windows down at temps over
90 when you really need it.
Since I had my '84 300D converted to R134a many moons ago when there
was indication that R12 would no longer be available, the AC in this
car has never been really good on hot days even when the R134a has
been topped up. The '85 300TD I purchased from my brother this past
year had never been converted from R12 and hadn't had a recharge in
many years, so I had a Freeze 12 charge with fresh oil added. Since
the Freeze 12 in the 300TD seems to cool things down a lot better
than the R134a in the 300D (Note: returning from a visit about 15-18
mi. during an afternoon when the outside temp. was ~86-88F and humid,
I ended up turning the temp. wheel off MIN and the fan setting to
low; it reminded me of a GM car) I'm considering switching from the
R134a to Freeze 12 in the 300D after I do some
troubleshooting/comparing of the performance of the ACC system as per
J. Cathey's troubleshooting guide. The ACC system in my 300D does
not have air blowing through the center dash vents when the AC is on
and I get maximum heat no matter where the temperature wheel is set,
whereas the ACC system in the 300TD seems to operate fine so I hope I
get some clue as to the cause of the maladies with the ACC in the 300D.
G. M. Brown
Brevard, NC
_______________________________________
http://www.okiebenz.com
For new and used parts go to www.okiebenz.com
To search list archives http://www.okiebenz.com/archive/
To Unsubscribe or change delivery options go to:
http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
_______________________________________
http://www.okiebenz.com
For new and used parts go to www.okiebenz.com
To search list archives http://www.okiebenz.com/archive/
To Unsubscribe or change delivery options go to:
http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
_______________________________________
http://www.okiebenz.com
For new and used parts go to www.okiebenz.com
To search list archives http://www.okiebenz.com/archive/
To Unsubscribe or change delivery options go to:
http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
