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95 U240 Third Member

HELP, 
  I need help finding a Meritor RS15-120NFLF-36 third member with a 5.29 ratio.  Mine is making loud noises on deceleration.  I will take new or rebuilt.
Pat/Blue Angel
1995 U240 36ft
MC# 16511
Build# 4653

Re: 95 U240 Third Member

Reply #1 –
Pat,

Don't you live down south around Lufkin if so you might call C & C truck parts in Kilgore 1-903-576-4462 (this is the last number I have for him) if anyone in the area has one or knows where one is located he will.

Are you sure that you have a bad 3rd member?  If you have it apart why not just rebuild that one?  You may just need a bearing or 2. Better yet have you pulled the U joint to make sure that the grease worms haven't ate up the trunnions in the U joint. Unless that pumkin has been run low/out of grease I would be looking at other things first.

Mike
Pamela & Mike 97 U 320

"It's not what happens to you, but how you react to it that matters."

Re: 95 U240 Third Member

Reply #2 –
Agree with Mike, 2 carrier bearings and 2 pinion bearings are all that is probably needed to make it as good as new. Axle bearings don't change sound with deceleration.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: 95 U240 Third Member

Reply #3 –
Thanks for the responses.  Mike I do live in lufkin, TX and thanks for that phone number.  I will call Monday  morning.  I have 227k miles on my U240.  The rear end has always whined while running.  This noise is different, it is a sound like a rock in a tire, except that  it is louder and more solid medal sound.  I here the sound on deceleration like coming into towns.  The sound is running at the speed of the wheels, not the speed of the motor/drive shaft and continues down to a stop.  I have had a mechanic ride and  listen and he agrees with me that it is most likely a tooth on the ring gear.  I don't know if this is any part of the cause, I was running 65-70 about 10 miles south of Lubbock, TX when the Allison shift pad starts to blink, after a few minutes of blinking, the tranny starts shifting up and down, I don't know all of what the tranny was doing, but ended up in forth gear with no lockup in the converter.  The take off at red lights was very very very slow, but it would get up to 45-50 and we made it to S & S Lubbock, TX.  That was 3:00pm on Friday, when I killed the engine, that was it no more tranny.  The tech bench tested the TCM and found that it was shot.  On the following Monday morning the new TCM came in and was installed, problem solved.  It was after that I noticed the noise.

Pat/Blue Angel
1995 U240 36ft
MC# 16511
Build# 4653

Re: 95 U240 Third Member

Reply #4 –
Update:
  The TCU repair in Lubbock, TX was $2800.00 total.

  The repair shop will only replace the complete third member,  which I agree with.  I found(after a lot  of looking) a Weller rebuilt third member in Dallas,TX.  I went to Dallas, picked up third member and carried it to repair shop.  I bought 4 wheel bearing, 2 wheel seals, a set of break shoes, and brake hardware kits.  After all that and the repairs done, the rear end does not have a sound.  The rear end will wear and get louder with mileage.  It is a standard truck rear axle used from '58 thru the late '70's in Ford F700 trucks.  I am happy with it and I hope this one goes 227K miles also.  Here is the break down:

    1  RS15120529WEL  third member                2959.81
         Core deposit                             1728.53
         Sales tax                                 386.78
    2  Brake Shoes(sets)  115.00                   351.34  FOT
    2  Wheel Seals         60.67                   121.34  FOT
         Sales tax                                  28.99
    4  Wheel bearing cones                         203.96  NAPA
    4  Wheel bearing cups                          145.96  NAPA
         Sales tax                                  28.86
    2  Brake hardware kit                           33.02  Ewell Equipment
    9 Hrs. labor, shop supplies, sales tax        1407.00
 

  I am glad that all the repairs are finished.  This means that I have a rebuilt rear axle including brake shoes.  I have replaced the brake canisters about 1 year ago.  I am happy about it.

Pat,
Pat/Blue Angel
1995 U240 36ft
MC# 16511
Build# 4653