I've read that in order to remove and replace glow plugs on my '82 300CDT that I should remove the intake lines first...having tried to squeeze my hand in there...and even breaking a u-joint wrench, I'm ready to to do this. I'm a total newbie, so can anybody give me suggestions on where to start to remove the intake lines? Any precautions?

Thanks,

David

Take a 17 mm high quality open end wrench. Be careful in your placement on the fitting. It takes a good amount of force to loosten them and tighten them. Once you get the hang of it it is not too hard. You will have to loosten the little brace brackets to get them off the injectors and the pump, and I usually can loosten them and remove them all still fastened together.

Tom W

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

OIC... Injector lines...

yeah, what tom said. be SURE they are hand threaded on BEFORE you put a wrench on them when re installing! and it's easier to put the Injection pump end on first...

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

yea.. Injector lines...

you remove the intake on the om6XX series

You'll find disagreement on the issue of whether you need to remove those lines to remove the glowplugs. I find leaving the lines in place and using gear wrenches an effective means of removing and replacing glowplugs.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

To loosen the nuts on the injectors and the Injection Pump, I use a
17mm flair nut crows foot wrench. using a straight 17mm open end
wrench doesn`t always fit or have the space to swing or turn.

I have replaced the plugs w/o removing the fuel lines.

I agree on the gear wrench. these things are real handy.
Use a little anti siez on the threads of the glow plug when installing.

when installing the wires and nuts, do not over tighten. If you drop one
of the little nuts, you will never find it. I have no idea where they go.

Charlie

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there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

Make sure you stuff some rags down between the IP and block and oil filter housing and block so that when you drop the nut/wrench/glowplug, it won't go far. You will almost certainly drop something.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

Me too.
On #5, I removed a clip on the throttle linkage, and moved the small hose out of the way.

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83 SD

84 CD

on #5 my mom came and used her smaller hands. LOL normally is dad helping on the car. but that time is was a job for the MOM

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Thanks. I think I'll try to remove plugs without removing intake lines first...So, a gear wrench with long socket to reach the nut on the plug? I can barely get my hand in there, and the gear wrench won't rotate or grab. What size socket should I use on the plug?

Thanks for all your input.

One tool you might want to get for this and it makes it so much easier- A medium depth 12mm socket with a built in swivel. It's the perfect fit for all 5 glow plugs.

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1980 500SE/AMG Euro
1981 500SEL Euro
1982 380SEL
1983 300TD
1983 500SEC/AMG Euro
1984 500SEC
1984 300TD Euro
1986 190E 2.3-16
1986 190E 2.3
1987 300D
1997 C36 AMG
2003 C320T 4matic

past: 1969 280SE 4.5 | 1978 240D | 1978 300D | 1981 300SD | 1981 300SD | 1982 300CD | 1983 300CD | 1983 300SD | 1983 380SEC | 1984 300D | 1984 300D | 1984 300TD | 1984 500SEL | 1984 300SD | 1985 300D | 1986 300E | 1986 560SEL | 1986 560SEL/Carat | 1987 560SEC | 1991 300D 2.5 | 2006 R350

cool...12mm socket medium depth...another trip to autozoo...I have gear wrench, but there's not enough space to take advantage of the gears.

Shouldn't need a socket. I'm not even sure there's enough room to use a socket. A standard box end gear wrench is what I use. You have to choose the right angle of approach to get it to swing, but it works on all of them.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13

gearwrench makes a set of gear sockets... the 1/4" set is amazing and perfect for this.
get them.

__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

LOL, cool, glad things worked out!
I did cramp up, and drop that 8mm gear wrench in the engine bay somewhere, bought another one, the first one shook out a few days later, as I found it on the garage floor.

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83 SD

84 CD