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#1
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Caliper pins won't budge on 240D
My tradition of turning routine maintenance into bloodsport continues as I am trying to change the brake pads on my 240D. I cannot, for the life of me, get the retaining pins out of the caliper. I used a punch and hammer and couldn't get the top one to budge ... the bottom one budged about a millimeter and no more. It's like they're welded into the caliper. I tried putting some wd40 on them but that didn't do a thing. Any tips on loosening them up? Heat them? It's pretty cold out and I'm guessing that doesn't help. The calipers themselves don't look too great so maybe I have to replace them anyway, but I'd like to put some new pads in and see how it goes (I already flushed the brakes + clutch and that went OK).
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1987 300D, arctic white/palomino--314,000 miles 1978 240D 4-speed, Euro Delivery, light ivory/bamboo--370,000 miles 2005 Jeep Liberty CRD Limited, light khaki/slate--140,000 miles 2018 Chevy Cruze diesel, 6-speed manual, satin steel metallic/kalahari--19,000 miles 1982 Peugeot 505 diesel, 4-speed manual, blue/blue, 130,000 miles 1995 S320, black/parchment--34,000 miles (Dad's car) |
#2
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I hate to ask this, but are you pushing them the right way?
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'85 300SD (formerly california emissions) '08 Chevy Tahoe '93 Ducati 900 SS '79 Kawasaki KZ 650 '86 Kawasaki KX 250 '88 Kawasaki KDX200 '71 Hodaka Ace 100 '72 Triumph T100R |
#3
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WD-40 overnight. Heat, too, but you will be risking the caliper seals if you let it get too hot. Some heat, just a propane torch, will help the WD-40 penetrate, even if it seems to smoke and flame and burn off. Heat, more WD, more heat, more fire, more WD... It'll come loose.
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#4
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use the new pins to push the old ones out....
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91 350SD 14 F150 Eco 19 Fusion Hybrid 11 GT500 |
#5
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What are you supporting the caliper with?
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http://superturbodiesel.com/images/sig.04.10.jpg 1995 E420 Schwarz 1995 E300 Weiss #1987 300D Sturmmachine #1991 300D Nearly Perfect #1994 E320 Cabriolet #1995 E320 Touring #1985 300D Sedan OBK #42 |
#6
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Almost positive ... I took the clip off and hit the outside end to drive it inward, which is what it looks like in the picture of the chiltons manual ... the other end of the pin is wider so there's only one way it could go. I pretty much followed the instructions in the manual: Remove sensors (or break them off, in my case), take off locking clips (and lose them), drive upper pin out using a punch, remove the spring, then drive out the lower pin. I couldn't get the upper pin to budge.
winmutt ... forgive me, but what do you mean? The caliper is still in place on the disc, so I just placed the punch on the caliper, bracing it with my hand, and hit it with a small hammer.
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1987 300D, arctic white/palomino--314,000 miles 1978 240D 4-speed, Euro Delivery, light ivory/bamboo--370,000 miles 2005 Jeep Liberty CRD Limited, light khaki/slate--140,000 miles 2018 Chevy Cruze diesel, 6-speed manual, satin steel metallic/kalahari--19,000 miles 1982 Peugeot 505 diesel, 4-speed manual, blue/blue, 130,000 miles 1995 S320, black/parchment--34,000 miles (Dad's car) |
#7
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Hit them harder.
I just use a nail and a hammer. I never have any trouble.
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1985 300TD Turbo Euro-wagon 1979 280CE 225,200 miles 1985 300D Turbo 264,000 miles 1976 240D 190,000 miles 1979 300TD 220,000 GONE but not forgotten 1976 300D 195,300 miles 1983 300D Turbo 175,000 miles http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg |
#8
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Might I recommend a larger hammer....
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Jimmy L. '05 Acura TL 6MT 2001 ML430 My Spare Gone: '95 E300 188K "Batmobile" Texas Unfriendly Black '85 300TD 235K "The Wagon" Texas Friendly White '80 240D 154K "China" Scar engine installed '81 300TD 240K "Smash" '80 240D 230K "The Squash" '81 240D 293K"Scar" Rear ended harder than Elton John |
#9
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I was a little worried about damaging something ... maybe the calipers are more robust than I think.
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1987 300D, arctic white/palomino--314,000 miles 1978 240D 4-speed, Euro Delivery, light ivory/bamboo--370,000 miles 2005 Jeep Liberty CRD Limited, light khaki/slate--140,000 miles 2018 Chevy Cruze diesel, 6-speed manual, satin steel metallic/kalahari--19,000 miles 1982 Peugeot 505 diesel, 4-speed manual, blue/blue, 130,000 miles 1995 S320, black/parchment--34,000 miles (Dad's car) |
#10
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your not going to hurt anything.
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1985 300TD Turbo Euro-wagon 1979 280CE 225,200 miles 1985 300D Turbo 264,000 miles 1976 240D 190,000 miles 1979 300TD 220,000 GONE but not forgotten 1976 300D 195,300 miles 1983 300D Turbo 175,000 miles http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg |
#11
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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. |
#12
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Quote:
(Don't try it though). They are designed to take a tremendous amount of stress and are forged, high quality steel.
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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. |
#13
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You might wind up damaging the pins if you hammer them hard. Try some penetrating oil first, instead of WD40. Sometimes, I've been able to loosen stuck pins by gripping them between the pads, with a Visegrip pliers and rotating them to break them free. Might also want to get some new pins first, just in case you wind up wasting the old ones.
Happy Motoring, Mark
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DrDKW |
#14
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If you hit the pins and not the caliper you won't harm anything but the pins, which you are saying you will replace anyway. You'll probably mushroom the small end a little, but so what.
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#15
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Thanks for all the advice ... I'll have a go with a meaner hammer and penetrating oil, if it isn't pouring rain tomorrow, which it's supposed to do.
__________________
1987 300D, arctic white/palomino--314,000 miles 1978 240D 4-speed, Euro Delivery, light ivory/bamboo--370,000 miles 2005 Jeep Liberty CRD Limited, light khaki/slate--140,000 miles 2018 Chevy Cruze diesel, 6-speed manual, satin steel metallic/kalahari--19,000 miles 1982 Peugeot 505 diesel, 4-speed manual, blue/blue, 130,000 miles 1995 S320, black/parchment--34,000 miles (Dad's car) |
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