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Topic: A/C idler assembly, M11 (Read 605 times) previous topic - next topic

A/C idler assembly, M11

I need the bolt that goes thru the bearing. My mechanic messed it up getting it off. Don't seem to get able to find the bolt or a complete assembly. May need to make one?
Larry
1998 u320 3600 build 5200

Re: A/C idler assembly, M11

Reply #1 –
Take the bolt to a fastenal store and see if they can match it,a picture would also help,any chance of having the "mechanic"fix
something he broke.
96 U270 BUILD 4810
85 380SL
Drummonds TN.

Re: A/C idler assembly, M11

Reply #2 –
Can you post a picture and the wrench size of the bolt? I can't open my engine cover at this time without removing my Roadmaster towing setup.
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: A/C idler assembly, M11

Reply #3 –
The mechanic didn't give me the failed bolt. It's custom because it has a larger shoulder where the pulley rides, but smaller through the bracket.
Thx
Larry
1998 u320 3600 build 5200

Re: A/C idler assembly, M11

Reply #4 –
Would that not be called a shoulder bolt? Fasten all should have them.
Richard & Betty Bark & Keiko our Golden Doodle
2003 U320T 3820 PBDS
Build # 6215
MC # 16926
2016 Chevrolet Colorado 4X4 diesel

Re: A/C idler assembly, M11

Reply #5 –
Maybe someone with the same engine will take a picture.
96 U270 BUILD 4810
85 380SL
Drummonds TN.

Re: A/C idler assembly, M11

Reply #6 –
Is this what you're describing?
Glen & Suzie
1998 U320 36'
Build #5366
2015 Jeep Grand Cherokee Overland
2015 ATC Aluminum 20' Trailer
Previous 1996 U295 40'
Motorcade #17546
Stephenville, TX

Re: A/C idler assembly, M11

Reply #7 –
That's it. Need the bolt that goes thru the pully, or the whole thing
1998 u320 3600 build 5200

Re: A/C idler assembly, M11

Reply #8 –
Hex head, Shoulder Bolt or Shoulder Screw.  Very common item.  Also available as a socket head (with more choices in size).

I'd find a new mechanic.  JMO

Hex Head Shoulder Bolts and Shoulder Screws - Grainger Industrial Supply

McMaster-Carr

Socket Shoulder Bolts | Fastenal

Socket Shoulder Bolts | Fastenal

1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"

Re: A/C idler assembly, M11

Reply #9 –
Take the mechanism in when you do,do you know if it's metric or not,looks like you could just use a bolt and a washer,and if the same guy puts it back together make sure he uses anti seize on the threads and uses a 6 point socket,while you have it apart I
would get a new bearing.
96 U270 BUILD 4810
85 380SL
Drummonds TN.

Re: A/C idler assembly, M11

Reply #10 –
Bolt head uses a 7/8" socket. The shoulder is 11/16" and don't forget the washer
Richard & Betty Bark & Keiko our Golden Doodle
2003 U320T 3820 PBDS
Build # 6215
MC # 16926
2016 Chevrolet Colorado 4X4 diesel

Re: A/C idler assembly, M11

Reply #11 –
The bolt shoulder has to be a tight but not pressed fit to the inside of the bearing and the length of the shoulder has to be exact to align the pulley with the air compressor pulley. And as John said replace that bearing. The info from Richard should get you going.
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: A/C idler assembly, M11

Reply #12 –
Quote from: rbark –
Bolt head uses a 7/8" socket. The shoulder is 11/16" and don't forget the washer
Richard, could you try a 1/2" 13 nut on the bolt to verify the thread size and get the diameter of the shoulder? With that information and your previous info one could be made.
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: A/C idler assembly, M11

Reply #13 –
Another idea,go to a Napa type store or auto AC store for the bearing,they may have a bolt to go with the bearing.
96 U270 BUILD 4810
85 380SL
Drummonds TN.

Re: A/C idler assembly, M11

Reply #14 –
Chuck, bolt threads are 7/16"X 20.
 Shoulder is 5/8" Dia.
Richard & Betty Bark & Keiko our Golden Doodle
2003 U320T 3820 PBDS
Build # 6215
MC # 16926
2016 Chevrolet Colorado 4X4 diesel

Re: A/C idler assembly, M11

Reply #15 –
Quote from: rbark –
Chuck, bolt threads are 7/16"X 20.
 Shoulder is 5/8" Dia.
I think you mean bolt diameter.
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: A/C idler assembly, M11

Reply #16 –
Thx for the info.
Will check Napa and fastenall
Will not use this mechanic again!
1998 u320 3600 build 5200