BD Brake Help

[Archive]

I installed my BD brake Saturday that was purchased on the group deal. Everthing works fine except the gear shifter mounted switch rattles like crazy. The red knob and shaft seem to be very loose in the switch. Is this the way they all are or do I have a defective one? Anyone have a fix? May try to cut and glue an O-ring ot the switch body to apply some friction to the shaft.

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'98 12-valve CC 2500 4x4 5-speed,Espar Heater,
Ultimate Bedliner, Turnover Gooseneck Hitch,
Bright-Box, Rancho RS9000
Combo Gage

 

[Archive]

Mine does that too, I've been told, "They all do that. " My solution was to wrap a small rubber band over the shaft. Double it as many times as you can. It will act as a cushion and keep the shaft from rattling when the switch is off. However, it won't do any good when the switch is on. No big deal for me, the switch usually isn't on for very long.
Enjoy your exhaust brake, once you get used to having it there, you'll wonder how you got along without it. For me, it's a habit to always flip it on whenever I'm slowing down, for a red light, going downhill, etc.
Andy

 

[Archive]

Question on the new BD brakes: Does the brake interface to the ECM fueling signal similar to the Jacobs unit, or does it still use a micro-switch on accelerator to disable the exhaust brake? Wondering how this works with the BD brake. Thanks.

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Wait'n for my 2001 2500 QC, SB, 4x4, ETH 6-sp, 3. 54 LSD, SLT++ (everything but those lights on top of the roof), White over Silver, Tan leather. D1 status to ship 8/21.

 

[Archive]

They do all do that. The solution is to put a rubber band around the stick shift and the red button so that the button is pulled towards the shift lever. It doesn't have to be very tight - just a very light pressure. This works with the button on or off.



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-Steve St. Laurent - President of the Great Lakes TDR, Chapter Forums Moderator
'98 QC LB (CMNSPWR), 4x4, ISB, 5sp, 4. 10 LSD, Prime-loc, SW fuel pressure gauge, boost & pyro gauges, TST Powermax, muffler eliminator, polished valve cover, BD exhaust brake, Isspro turbo temp monitor, Mag Hy-tec rear diff cover, Permatech liner, Grizzly SS nerf bars, Stull SS grill & bumper inserts, front Draw-Tite receiver, rear Draw-Tite class V receiver, BFG 285/75R16 AT KO's

 

[Archive]

Ski Bum. to answer your question... ]

Micro-switch. .

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Real BOMBers never get speeding tickets. . just a lot of warnings!

[This message has been edited by TDCanuk (edited 08-21-2000). ]

 

[Archive]

Interesting posting - I had the same problem and fixed it to the point it was forgotten about. All I did was to cut two small O-rings, the right size for the shaft, and that was it. The rings will not fall off and do not interfere with the electrical switch.

Ski Bum, unless things have changed in the last four months, the micro-switch is still used.

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Stan

2001 2500 SLT+ Quad Cab, 6 speed, ETH, 4X4, LWB, 3. 54 LSD Trailer Tow, Camper Special, 241HD, Tow Mirrors, Bright White, Line-X Bedliner, Putco Boss SS running boards, A. R. E. K Series Truck Cap, Reese Titan V Hitch, 2WD Low, DD 4" exhaust, BD exhaust brake, Isspro Boost and EGT gauges, Mag-Hytec rear cover with Amsoil Series 2000 75W-90 synthetic, Amsoil Dual-Remote Cummins Oil Filtration System (full-flow & by-pass)

 

[Archive]

All ebrakes that use a microswitch can be converted to ECM control just like the Jacobs. Simply tap into Pin 20 on the ECM connector with a #22 wire. Run the wire to one side of a small relay coil (100 mA or so WITH reverse EMF diode) and ground the other side of the coil. Then just connect the relay contacts in place of the foot microswitch and presto no more annoying clicking in the cockpit!

P. S. There is about a 1. 5 second delay from pedal idle to ebrake activation. Helps prevent ebrake cyclying while down shifting.

Ron.

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'00,2500,4x4,QC,LB,6spd,3. 54,4wABS,Camper-Trailer packs,BD Brake w/ECM ctrl,Pullrite 20. 5K 5hitch,Tekonsha EnvoySV,12K# Damon Escaper, CobraCB,Flame Red/Silver.

 

[Archive]

Hey Ron,

Where did you find a relay? 100ma is a pretty small relay coil. Do you happen to know what kind of amperage the operating contacts will draw. I think the BD Brake is fused at 5 amps.

I'd like to build my own Pin20 box.

Thanks
Mick2500

 

[Archive]

Originally posted by Steve St. Laurent:
They do all do that. The solution is to put a rubber band around the stick shift and the red button so that the button is pulled towards the shift lever. It doesn't have to be very tight - just a very light pressure. This works with the button on or off.

Thanks Steve, I never thought of that! I put a rubber band over the shaft and the shift lever, and no more rattling, on or off!! This is probably one of the only modifications I could do to my truck while doing 70 mph!