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#1
07-02-2010, 07:58 PM
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Quick little brake question .. bellows on caliper brace
.... on the w124. I have new little bellows for the pins that hold the floating caliper onto the bracket (the old ones have subtle cracking and new ones came with my reman calipers), but I'm not sure what the grease is inside them. I can't find it in the FSM for the life of me. It looks like what's in there was once a silvery color, like brake paste, but I thought it would make more sense to use bearing grease or other grease. Anyone know?
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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) 
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#3
07-02-2010, 08:27 PM
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NAPA and others sell a synthetic brake grease, much like the stuff you get with new pads to put on the side facing the piston or floating caliper (away from the rotor). Anything that goes on the brakes needs to be rated for high temperatures, and the synthetic stuff is, by my experience, compatible with the other brake components. I also use it on the edges of the steel backing plates that interface with the stationary guide surfaces on the calipers (on the "top" and "bottom" of the slot the pad fits into).
Good luck and I hope this helps. Jim
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Own: 1986 Euro 190E 2.3-16 (291,000 miles), 1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000, 1988 300E 5-speed 252,000 miles, 1983 240D 4-speed, purchased w/136,000, now with 222,000 miles. 2009 ML320CDI Bluetec, 89,000 miles Owned: 1971 220D (250,000 miles plus, sold to father-in-law), 1975 240D (245,000 miles - died of body rot), 1991 350SD (176,560 miles, weakest Benz I have owned), 1999 C230 Sport (45,400 miles), 1982 240D (321,000 miles, put to sleep)
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#4
07-02-2010, 09:11 PM
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Chas, yes I was referring to the grease on the sliding pins.
Jim ... I have a jar of Mercedes-Benz "brake paste" for use on the back of the pads and the guide surfaces of the calipers, which I usually use for those purposes. Would it work on the sliding pins as well? The old grease on the pins looks exactly like the stuff in the jar of MB brake paste.
__________________
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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#5
07-02-2010, 09:26 PM
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Bodhi,
The brake paste is probably the stuff you want, for brakes you do not use normal grease. The grease (paste) used in the past was a white color (maybe gray), often called lithium grease. If Jim has experience with synthetic grease then I guess it is ok as well. Hope that helps!! Good Luck.
__________________
Grumpy Old Diesel Owners Club group I no longer question authority, I annoy authority. More effect, less effort....  1967 230-6 auto parts car. rust bucket. 1980 300D now parts car 800k miles 1984 300D 500k miles  1987 250td 160k miles English import  2001 jeep turbo diesel 130k miles  1998 jeep tdi ~ followed me home. Needs a turbo. 1968 Ford F750 truck. 6-354 diesel conversion. Other toys ~J.D.,Cat & GM ~ mainly earth moving
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#6
07-02-2010, 10:09 PM
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The stuff I get with a set of pads (in little tin foil envelops) is very similar to the high temperature synthetic grease for brakes I spoke of - it is also a deep green color. I have no idea what the jar of stuff is, but if it is intended for the back side of the pads, it is good enough for the pins.
Jim
__________________
Own: 1986 Euro 190E 2.3-16 (291,000 miles), 1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000, 1988 300E 5-speed 252,000 miles, 1983 240D 4-speed, purchased w/136,000, now with 222,000 miles. 2009 ML320CDI Bluetec, 89,000 miles Owned: 1971 220D (250,000 miles plus, sold to father-in-law), 1975 240D (245,000 miles - died of body rot), 1991 350SD (176,560 miles, weakest Benz I have owned), 1999 C230 Sport (45,400 miles), 1982 240D (321,000 miles, put to sleep)
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#7
07-02-2010, 10:32 PM
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Thanks guys! Very helpful as always.
 The MB dealer gave me the jar for use on the back and edges (on the guides) of the pads; it's kind of a silvery color. I've used it on pads in the past and it's done fine, so I'll go with it on the pins. I'll post a picture of the jar later in case anybody's curious.
__________________
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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#8
07-03-2010, 11:16 AM
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Quote:
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#9
07-03-2010, 07:32 PM
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Anti-seize works well in a pinch, lithium grease is ok, but I usually use a high temp Teflon-based grease called Magna-Lube. It's very good stuff, sticks around even on exhaust bolts, and lasts a very long time. The only other stuff I would recommend for brake hardware is copper anti-seize, but that stuff is expensive.
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