The International Cessna^® 170 Association

My throttle control has been giving problems by sticking at low power settings - not what you need if a bit more power is required on short final

The throttle friction bushes were badly worn and have now been removed. This has solved the sticking problem to a large extent but now there is no throttle friction adjustment and the control is still a bit "sticky" dispite generous lubrication.

The local Cessna dealer says the part (0411091-2) [for a 1949 C170A] is no longer available.
McFarlane appear to have one for $287.88 (part # MC0411091-2). http://www.mcfarlane-aviation.com/PricePg4.htm
Broadie's seem to have a replacement control (part # S1222-1) for $112.85. http://www.broadiesaircraft.com/buy/THR ... -parts.asp

Has anyone had to replace a throttle control recently?
Would the Broadie's control be a suitable replacement?
Are there any other sources of throttle control?

Thank you for any assistance you can offer.

David.

CAS

I used the McFarland and am happy with it. Don't know about Broadies but there are several mfgs out there not all providing good or certified parts.

Aircraft Spruce has a whole selection of throttle cables manufactored by ACS. It states in there catalog that - "The manufacturing and inspection procedures have been approved by the FAA and original equipment manufacturers." I guess this is another way of saying FAA/PMA? The most expensive is about $65 depending on length.

Dave, Karl

Thanks for the info.

I checked out the Aircraft Spruce site http://www.aircraftspruce.com/nsearch.p ... le+control

They have part # AS0411091-2 for $237.95, or
a generic throttle control part #A-800-12 for C150/152/172 (but do not include C170 in their list) for $110.95

PS The price on the McFarlane control should read $237.88.

David

David, your right. Under Spruce's "Cessna parts" section they say that the throttle cables I mentioned are NOT FAA approved, except for the A-800 whch is approved for C150,152,172. I also must have a older catalog, as the price just a few months ago was $52.00 for the 6 foot A-800.

I think you can get McFarland to build it with the steel sleeve that is at the firewall to be located anywhere you want it in case your routing is a little different. I would suggest you at least send measurements of your old one when ordering a new cable. Several times I've bought a replacement that has the steel sleeve in a different location than what it replaced. Also consider the sleeve for the housing clamp at the carb end.

In an old Beech 18 manual, they recommend using a mixture of naptha and graphite in a small agricultural sprayer. Connect it to the carb end with a hose and clamps and have somebody work the throttle back and forth until the mix makes it to the panel. I have done it on an 18 and it is very effective. I think that you could do the same with an aerosol can of graphite. If you drilled a hole in the spray nozzle so that the graphite came out the end where you put your finger to spray and connected that with a hose and clamps, that should accomplish the same. Its worth a try as a can of graphite spray is not too expensive and you don't have to change the cable.

McFarlane shows the early C-170B throttle cable (p/n MC0411091-2) costs $354. The later C-170B's throttle cable (p/n MCS1222-2S) costs $199. Are these cables that much different? Why the big difference in cost? Maybe because Cessna no longer offers the early 170B throttle?

I had a throttle cable failure a few years ago. I removed it and sent it to McFarland, and they returned the new, exact copy, throttle cable within a week. I realize Perth is a little further away than Alaska, but you will get a exact copy of what you have, and operational, very smooth.