Geez Tom - Don't hold them! ;-) Larry T (67 MGB, 74 911, 78 240D, 91 300D) www.youroil.net for Oil Analysis and Weber Parts Test Results http://members.rennlist.com/oil PORSCHE POSTERS! youroil.net Weber Carb Info http://members.rennlist.com/webercarbs .
----- Original Message ----- From: "Tom Hargrave" <[EMAIL PROTECTED]> To: "'Mercedes Discussion List'" <[email protected]> Sent: Thursday, November 29, 2007 9:50 AM Subject: Re: [MBZ] Changing glow plugs? > I've tried that test - it cost me a few finger prints...... > > Thanks, > Tom Hargrave > www.kegkits.com > 256-656-1924 > > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > On Behalf Of LarryT > Sent: Thursday, November 29, 2007 8:45 AM > To: Mercedes Discussion List > Subject: Re: [MBZ] Changing glow plugs? > > When I was wondering if one of my GPs were bad (they were new) I pulled > them > > out and attached a battery charger to each one - if they glowed red hot > within about 15 seconds I considered it good. > > Good luck - > > Larry T (67 MGB, 74 911, 78 240D, 91 300D) > www.youroil.net for Oil Analysis and Weber Parts > Test Results http://members.rennlist.com/oil > PORSCHE POSTERS! youroil.net > Weber Carb Info http://members.rennlist.com/webercarbs > . > > ----- Original Message ----- > From: "Dave H..." <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]>; "Mercedes Discussion List" > <[email protected]> > Sent: Thursday, November 29, 2007 8:09 AM > Subject: Re: [MBZ] Changing glow plugs? > > > Could you please elaborate on the resistance comment for testing glow > plugs? > is there a ohm reading that states the glow plug is acceptable and > anything > above/below that reading is a call to replace that glow plug? > > > Dave H... > > -------------------------------------------------- > From: "John M McIntosh" <[EMAIL PROTECTED]> > Sent: Tuesday, November 27, 2007 11:15 PM > To: "Mercedes Discussion List" <[email protected]> > Subject: Re: [MBZ] Changing glow plugs? > >> So what resistance did you measure? Some meters might not give >> accurate readings? >> Well mind given your other comments likely they are bad. >> >> Disconnect the wires, don't drop the nuts, use one of those racheting >> wenches. >> If there is not a problem with carbon buildup they should just >> unscrew. Otherwise you >> are into fun to ensure you don't break the tips off. >> >> >> My copy of the Beru glow plug manual notes: >> >> Observe the breakage torque when dismantling glow plugs. >> On no account carry on turning - the glow plug could >> otherwise break. Instead, proceed according to the 3-point >> programme: heat up - release -unscrew: >> >> 1. Heat up: Run the engine until it is warm or apply >> current to the intact glow plug through a separate cable >> for 4-5 minutes - this heats up the glow plug and burns >> it free. >> >> 2. Release: Apply a generous quantity of anti-rust agent or >> multi-functional oil to the base of the thread and leave >> to work in for approx. 5 minutes. >> >> 3. Unscrew: Then start a new attempt to unscrew the plug >> and use suitable tools to release the glow plug from the >> cylinder head. (Do not exceed the maximum release tor- >> que - see table below. Make sure you stop before you >> reach the breakage torque, if necessary start a new >> attempt by applying heat.) >> >> After the old glow plugs have been removed, make sure you >> clean the thread, the pin seat and the glow plug channel >> with a suitable tool. >> >> Glow plug thread Breakage torque >> 8 mm 20 Nm >> 10 mm 35 Nm >> 12 mm 45 Nm >> >> Observe the torque specified by the manufacturer when >> screwing in a new glow plug: >> >> Note: The tightening torque of the connecting nut must be taken >> into account when dealing with glow plugs with screw connection: >> The Beru ring-ratchet-spanner >> (order no. 0 890 100 002): ideal to dismantle and assemble glow >> plugs, even in very tricky spots. >> >> Glow plug thread Tightening torque >> M 4 2 Nm >> M 5 3 Nm >> M 8 10 Nm >> M 10 12-15 Nm >> M 12 20-22 Nm >> >> >> Also see >> http://www.beru.com/english/produkte/gluehkerzen/einbautipps.php >> >> >> On Nov 27, 2007, at 7:55 PM, Chris Lane wrote: >> >>> Today I went outside with my newly liberated meter, and found that 3 >>> of my 5 >>> glow plugs seem to be bad. My glow plug light stopped working a >>> little >>> while back, and I have not been able to check that out until now. I >>> measured the impedance of each one at the relay. So, I'm figuring >>> that I >>> should just change them all. The relay seemed ok, as much as I >>> could check >>> it out today. >>> So my question is, is there anything funky about replacing them? >>> Spark >>> plugs are no problem, unless they are in a Toyota Previa (In which >>> case you >>> have to take out the passenger seat, and open the floor of the van >>> to get to >>> them). Its in an 82 300SD, so a 617. All five of them seem like they >>> should be fairly easy to get to. The 5th one looks like the >>> trickiest, just >>> because of the oil filter housing, but there should be plenty of >>> space. Are >>> there any special tools that are needed to replace them? Do I just >>> diconnect the wires, and get the appropriate sized wrench and start >>> removing >>> them, and then reverse the operation to install the new ones? >>> Thanks, >>> Chris >>> _______________________________________ >>> http://www.okiebenz.com >>> 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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >> >> John >> 1983 300TDt 385k Kilometers (mobil 1 Delvac) >> 1990's 300TDt 213k Kilometers (mobil 1 Delvac) >> 1993 500SEL 201k Kilometers (mobil 1 Delvac) >> >> >> >> _______________________________________ >> http://www.okiebenz.com >> 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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >> > > _______________________________________ > http://www.okiebenz.com > 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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.5.503 / Virus Database: 269.16.9/1155 - Release Date: > 11/27/2007 > 8:30 PM > > > _______________________________________ > http://www.okiebenz.com > 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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > > _______________________________________ > http://www.okiebenz.com > 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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.5.503 / Virus Database: 269.16.10/1159 - Release Date: > 11/29/2007 11:10 AM > _______________________________________ http://www.okiebenz.com 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://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
