Skip to main content ↑ ↓
Topic: Jake Brake vs PAC Brake vs Retarder? (Read 3411 times) previous topic - next topic

Re: Jake Brake vs PAC Brake vs Retarder?

Reply #20 –
 Dave,

If I don't have to use the service brakes very often, even on 10% plus grades on the approach to Jackson, WY (with toad), how much better do they have to be? As much as I use the brakes, the pads should last to the next millennium.

You just cast a lure for me, didn't you? ;)

Pierce

Re: Jake Brake vs PAC Brake vs Retarder?

Reply #21 –
Quote
Earlier U300s had a Allison MTB 648 transmission. Don't know about lock up on those.
I have a MTB 648 on my '91 U300.  Locks up in 3rd and 4th.

Re: Jake Brake vs PAC Brake vs Retarder?

Reply #23 –
I have a 1988 Grand Villa with 300 cat and 4 speed Allison,
Can any one tell me if it has a Jake brake, Pac or Retarder that came with it standard or was it an option for the buyer at the time,

Re: Jake Brake vs PAC Brake vs Retarder?

Reply #24 –
Quote from: MR B2 –
I have a 1988 Grand Villa with 300 cat and 4 speed Allison,
Can any one tell me if it has a Jake brake, Pac or Retarder that came with it standard or was it an option for the buyer at the time,

If it has a Pacbrake you can see it on the exhaust pipe leading from the manifold to the muffler. It will be a small cylinder with the piston operating a butterfly valve mounted smack dab in the middle of the exhaust pipe. It won't have a transmission retarder unless I completely misunderstand things. Might have a Jake but I don't have any familiarity with those.

Craig

Re: Jake Brake vs PAC Brake vs Retarder?

Reply #25 –
I have the PAC brake on my '94 U240 and I must say it works pretty good. Sill have to hit the foot peddle occasionally but no that much. I live near Pierce and am always going up or downhill. I have not towed a heavy vehicle yet, but do tow about 2800 lbs with my trailer and RZR with no braking on the trailer.  So far I am a happy camper with the PAC brake

Re: Jake Brake vs PAC Brake vs Retarder?

Reply #26 –
That year of coach did not come with a pac brake or jake brake. I have seen a pac brake added after a person had oowned the coach for a while

Re: Jake Brake vs PAC Brake vs Retarder?

Reply #27 –
Quote from: MR B2 –
I have a 1988 Grand Villa with 300 cat and 4 speed Allison,
Can any one tell me if it has a Jake brake, Pac or Retarder that came with it standard or was it an option for the buyer at the time,
It would have a on/off switch somewhere on the dash.  Probably would be marked Extarger, Retarder, or something along that line.

Re: Jake Brake vs PAC Brake vs Retarder?

Reply #28 –
Yup there is a switch on the lower left part of the dash marked PAC brake and one of the extra fuse spots is used and marked PAC break, So I suppose one of the two previous owners had it installed if it did not come that way.......So glad they did!
Steve

Re: Jake Brake vs PAC Brake vs Retarder?

Reply #29 –
Quote from: MR B2 –
I have a 1988 Grand Villa with 300 cat and 4 speed Allison,
Can any one tell me if it has a Jake brake, Pac or Retarder that came with it standard or was it an option for the buyer at the time,

None.

Re: Jake Brake vs PAC Brake vs Retarder?

Reply #30 –
Thanks for that,
Wont see it for 3 months and am trying to find out what it has and doesnt have,
What it came with new,
I dont have contact with the PO, I bought it from an RV dealer in Texas, And the inventory is pretty limited for info,