VansAirForceForums  
Home > VansAirForceForums

- POSTING RULES
- Donate yearly (please).
- Advertise in here!

- Today's Posts | Insert Pics


Go Back   VAF Forums > Model Specific > RV-12/RV-12iS
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #11  
Old 04-14-2015, 09:24 PM
Bill_H's Avatar
Bill_H Bill_H is offline
 
Join Date: Aug 2010
Location: Marshall TX (KASL)
Posts: 1,783
Default

Once you get them off, please report on the external and internal condition of the hoses.
Reply With Quote
  #12  
Old 04-15-2015, 04:57 AM
Dave12 Dave12 is offline
 
Join Date: Oct 2010
Location: Elkton, Md.
Posts: 1,652
Default

I have two new oil hoses for sale if needed. 1-Tank to Cooler, 1-Pump to cooler. Not used due to Thermostasis.
__________________
Wag Aero Sport Trainer built,sold and wrecked
N588DF RV12 #336 built, sold and alive and well in New York
N73DF RV12 #244 built, sold and alive and well in Florida
N91 RV RV9 I wish I could say I built this one! Mark Santoleri hit the ball out of the park on this gem.
Currently restoring a 1978 Citabria GCBC
Reply With Quote
  #13  
Old 04-15-2015, 10:44 AM
Driftdown Driftdown is offline
 
Join Date: Jan 2011
Location: Clearwater, Florida
Posts: 398
Default

Quote:
Originally Posted by Loki View Post
Whatever you slide under the hose you just need to be a little careful.
That point is well noted.
Thanks.
Reply With Quote
  #14  
Old 04-15-2015, 11:02 AM
rvbuilder2002's Avatar
rvbuilder2002 rvbuilder2002 is offline
 
Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 9,035
Default

Quote:
Originally Posted by Dave12 View Post
I have two new oil hoses for sale if needed. 1-Tank to Cooler, 1-Pump to cooler. Not used due to Thermostasis.
Not intending to shoot down any potential sale Dave, just clarifying a maintenance detail.

Rotax specifies a 5 year hose replacement interval for the engine. That does not apply to airframe specific parts. The airplane manufacturer is responsible for specifying replacement for airframe specific parts.
The RV-12 maint. manual specifies that hoses specific to the airframe (oil cooler, etc.) be replaced at 10 year intervals.
__________________
Opinions, information and comments are my own unless stated otherwise. They do not necessarily represent the direction/opinions of my employer.

Scott McDaniels
Van's Aircraft Engineering Prototype Shop Manager
Hubbard, Oregon
RV-6A (aka "Junkyard Special ")
Reply With Quote
  #15  
Old 04-15-2015, 03:43 PM
RGaines RGaines is offline
 
Join Date: Aug 2007
Location: Novato, CA
Posts: 151
Default Hose Replacement

I thought I remembered the 10 year replacement on Van's airframe hoses but now i can't find the reference. Which hoses are in the 10 year Van's replacement list and where in the maintenance manual is that noted? Which Rotax hoses are in the 5 year replacement cycle? Are the carb rubber mounts in the 5 year cycle?

This is very helpful. Thanks

Rich
Reply With Quote
  #16  
Old 04-15-2015, 06:49 PM
mrt890 mrt890 is offline
 
Join Date: May 2008
Location: Friday Harbor, Wa
Posts: 300
Default

Look in the latest version of the maintenance manual sec 18
__________________
MRT890
120042 RV-12
N112XP
Reply With Quote
  #17  
Old 04-18-2015, 04:13 PM
Bob Kibby Bob Kibby is offline
 
Join Date: May 2008
Location: Arlington, Texas
Posts: 127
Default Better days at the hangar

Got the lower cyl #3 & # 4 hoses off at the water pump end. Used the standard clamp pliers and was able move the ears around enough to get the clamps in position where I could move them far enough to get them off of the clamping area. Puzzle me this? I was able to get all of the lower hoses off without cutting the exterior of the hose. Rotate the ends with pliers and they came right off.

The hoses look good at the ends and by feel running my finger on the inside of the hose where they had been clamped. I opened up the cyl #4 upper hose and the inside of the hose is shiny and there is no difference in appearance between the clamping area and the rest of the hose. I have a couple of photos but need help posting them.

The rubber plate (860 826) that goes under the Water Distribution Assy (922 268) is held in place by ears that go over a couple of the Assy ports. Both of these ears were broken so have ordered a rubber plate replacement.

Installation of the new lower hoses was no problem. Don't expect any installation problem with the upper hoses. Things are looking good at the hangar

Bob Kibby "N712BK"
Reply With Quote
  #18  
Old 04-18-2015, 06:52 PM
Sink Sink is offline
Banned
 
Join Date: Apr 2015
Location: Altha, FL.
Posts: 114
Default

When applying the spring clamps back on the new hose they will seal much better if the clamp is up near the flare on the tube under the rubber. If the clamps are too far back towards the hose end t can leak, but not always. Also don't put the clamp on top of the false on the tube.
Reply With Quote
  #19  
Old 04-22-2015, 07:38 PM
yankee-flyer yankee-flyer is offline
 
Join Date: Jun 2009
Location: Dayton, OH
Posts: 838
Default Scott, can you clarify

If I understand correctly, any hose with a "VA" part number doesn't need to be replaced at 5 years?

THANKS

Wayne Moyer 120241/143WM
Reply With Quote
  #20  
Old 05-23-2015, 04:50 PM
Tony_T's Avatar
Tony_T Tony_T is offline
 
Join Date: Dec 2008
Location: Lacey, WA
Posts: 1,365
Default Hose replacement

I thought I would add to Kibby's thread and share my first-time experiences doing the Rotax coolant hose replacement.

I had very much the same experience as Bob with the clamps. On the bottom of the engine all the clamps but cyl. #4 at the water pump are accessible with a pair of hose clamp pliers. I also have the cable clamp removal tool but even with that I could not get on that #4 clamp until I saw that it is accessible with the cable tool going down from the top.

I bought the tools on Amazon, but the cable tool is also available from Rotax suppliers.

I spent 3 hours getting the bottom hoses changed. And figured another 3 hours for the top on another day. That proved to be accurate, there are 2 clamps on top that neither of my tools would get without removing the intake manifolds. I had anticipated this and had new O-rings and lock washers on hand.

It sounds worse than it is, the manifolds come off with no pain and we all had to do them when we prepped the motor on initial installation so I had been there before. The clamp on cyl. #3 was just under the manifold and no way to get on it...

By taking off the manifold and holding it aside I was able to squeeze the clamp and move it back. It is just visible under a spark plug wire in the picture.

and also the clamp on cyl. #4...


The hoses are the most trouble of the 5 year rubber replacement. I have to keep reminding myself that I like to tinker .

It is a good idea to have the intake O-rings on hand and the proper clamp tools before attempting the coolant hoses.

As Bob noted, the hoses taken off looked to be in pretty good shape, I could not tell that they were deteriorated, but not too sure what to look for or even if rubber deterioration is something that is visible.

I am also going to be replacing the oil lines, except the oil return hose, with the Thermostasis kit from AC Specialty, and the teflon fuel hoses from ACS as well, and as you can see, all those hoses have to be off the engine to get room to work on coolant hoses.
__________________
Tony
E-LSA RV-12 ULS

Last edited by Tony_T : 05-23-2015 at 05:50 PM. Reason: Sp
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 01:06 AM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.