Re: [MBZ] Thermostat replacement
About how much coolant do I need to drain to change the thermostat on an OM617? Will three gallons do it? Seems to me it's more like a gallon that has to come out. Usually I just drain what will come out into a bucket, and then pour it back in after the operation. -- Jim
Re: [MBZ] Thermostat replacement
When I changed the t'stat in my 91 300D recently I bought a gallon of
antifreeze at the dealer and used an add'l empty jug to pour half of the new
stuff into. I then filled both jugs (which were now both 1/2 filled with
coolant - giving me 2 full gallons. I ended up refilling the cooling system
(don't forget to turn the heater to hot so it gets refilled also) with a
little over a gallon of my coolant mixture into the system.
Good luck -
.
Sincerely,
Larry T ('74 911, '67 MGB, 91 300D Turbo)
A Blood Test for your oil - www.youroil.net
For Test Results http://members.rennlist.com/oil
Weber Carb Stuff http://members.rennlist.com/webercarbs
http://members.rennlist.com/my_911/Index.htm For my Paint Job Info
- Original Message -
From: David Brodbeck [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Friday, April 28, 2006 1:13 AM
Subject: [MBZ] Thermostat replacement
About how much coolant do I need to drain to change the thermostat on an
OM617? Will three gallons do it?
David Brodbeck
'83 300D Turbo
___
http://www.striplin.net
For new parts see official list sponsor: http://www.buymbparts.com/
For used parts email [EMAIL PROTECTED]
To Unsubscribe or change delivery options go to:
http://striplin.net/mailman/listinfo/mercedes_striplin.net
Re: [MBZ] Thermostat replacement
Marshall Booth wrote: 12.5 liters to completely drain and refill the cooling system and heater core of an OM617.95 engined 123 or 126. That's 3.3 gallons. Most other Mercedes diesels use less. Hmm...I might as well just drain and refill the whole system, then. I have no idea how long that stuff's been in there, so it should be changed anyway, and draining it all out the bottom before I start will minimize spillage when I open the thermostat housing. I wouldn't have asked at all except for a minor brain fart. For some reason I'd misread the capacity given in the manual as 12.5 *gallons*, which is way more than I wanted to deal with, but in hindsight there's just no way it could hold that much. ;) David Brodbeck '83 300D Turbo
Re: [MBZ] Thermostat replacement
I wouldn't have asked at all except for a minor brain fart. For some reason I'd misread the capacity given in the manual as 12.5 *gallons*, which is way more than I wanted to deal with, but in hindsight there's just no way it could hold that much. ;) I don't think even the infamous VW Beetle's 'radiator' holds that much! -- Jim
Re: [MBZ] Thermostat replacement
Jim Cathey wrote: I wouldn't have asked at all except for a minor brain fart. For some reason I'd misread the capacity given in the manual as 12.5 *gallons*, which is way more than I wanted to deal with, but in hindsight there's just no way it could hold that much. ;) I don't think even the infamous VW Beetle's 'radiator' holds that much! I don't know...I'll have to check the section on coolant that Chilton helpfully provided in their manual for that car. ;)
Re: [MBZ] Thermostat Replacement
[EMAIL PROTECTED] wrote: Howdy - Rec'd my new T'stat from Rusty yesterday and opened the hood thinking the t'stat housing would be on top like most other cars (and my 240D) - to my surprise it looks like it's *under* the exhaust manifold! Doesn't look all that hard to get to - 2 nuts and a hose to remove - but the coolant will need to be removed and replaced (I know, it probably needs to be replaced anyway) but catching it as it flows out might be tricky - and I'll be learning how to remove the forward sound panel. ;-) All covered in the cooling system section (20) here: http://mb.braingears.com/124_DISC1/Program/engine_602_mech.htm Marshall -- Marshall Booth (who doesn't respond to unsigned questions) der Dieseling Doktor [EMAIL PROTECTED] '87 300TD 182Kmi, '84 190D 2.2 229Kmi, '85 190D 2.0 161Kmi, '87 190D 2.5 turbo 237kmi
Re: [MBZ] Thermostat Replacement (OM602)
Hi Larry,
I've never worked on a 602, and my 603's are similar, but not
identical to yours. Anyway, here's a couple of possible tips:
1) I can RR this from up top - I pull the rubber intake snorkel
(loosen the one clamp on each end), and that provides lots of room.
There's also access from below if you're having a hard time from up
top.
2) If there is a round electrical widget directly in front of the
housing, remove this first... it makes the job about 10x easier. I'm
not sure if the 602 has this sensor or not (may depend on model year).
On my car this is a 50C switch for the tranny vacuum circuit, with one
wire attached. The seal is re-useable.
3) There's a block drain under the turbo, near the motor mount
bracket, just above the oil pan. Loosen this 19mm fitting to drain the
block.
4) The front sound panel is attached with 4 screws - pretty simple. If
any of the nuts are stripped, you may be able to fix them with
pliers and a vise... I keep a bunch on hand though and replace the bad
ones periodically. They're pretty cheap from Rusty,
:-)
-Dave M.
--
Date: Sat, 25 Feb 2006 19:57:27 -0500
From: [EMAIL PROTECTED]
Subject: [MBZ] Thermostat Replacement
Howdy -
Rec'd my new T'stat from Rusty yesterday and opened the hood thinking the
t'stat housing would be on top like most other cars (and my 240D) - to my
surprise it looks like it's *under* the exhaust manifold! Doesn't look all
that hard to get to - 2 nuts and a hose to remove - but the coolant will
need to be removed and replaced (I know, it probably needs to be replaced
anyway) but catching it as it flows out might be tricky - and I'll be
learning how to remove the forward sound panel. ;-)
Fun, fun, fun!
It's looking like I need to schedule a day where I can change the oil,
t'stat and motor mounts at one time. May as well wait and do the ATF
filter change then too. Might be a long day --
;-)
Sincerely,
Larry T ('74 911, '67 MGB, 91 300D Turbo)
