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Old 03-19-2019, 09:40 AM   #1
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Pac-brake lubrication

Cummins ISL on Freightliner chassis and I just completed the chassis and drive line lubrication. Doesn't look like the last service facility didn't do a complete lube. Grease and dirt caked jerks. I downloaded the appropriate lube chart from FL servicing and it makes reference to a few things not on my chassis. Mine has IFS and there are references to different front end and steering knuckle lube which mine doesn't have.

Question is about Pac brake. FL says to lube the 5 points on it but I'n not sure where it is or to access. Then again my application may have a different type engine/exhaust brake setup. 2 stage "engine brake" according to the switch.
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Old 03-19-2019, 10:49 AM   #2
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Pac Brake has a lube, simple to use.
https://www.xtremediesel.com/pacbrak...intenance-lube
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Old 03-19-2019, 10:59 AM   #3
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The PacBrake on our ISC350 is accessed through the engine access door in the closet floor.
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Old 03-19-2019, 11:06 AM   #4
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I bought some of the high temp lube at an FMCA rally some years ago. Access was through the bedroom floor though.
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Old 03-19-2019, 11:06 AM   #5
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ISL uses a 2stage Engine, or Compression Brake. The Exhaust, or PAC Brake is used on the older ISC engines.
Your ISL has an Engine Brake which is incorporated into the cylinder head.
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Old 03-19-2019, 01:52 PM   #6
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Quote:
Originally Posted by dennis45 View Post
ISL uses a 2stage Engine, or Compression Brake. The Exhaust, or PAC Brake is used on the older ISC engines.
Your ISL has an Engine Brake which is incorporated into the cylinder head.
Good as such nothing to lube.
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Old 03-19-2019, 02:46 PM   #7
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Quote:
Originally Posted by dennis45 View Post
ISL uses a 2stage Engine, or Compression Brake. The Exhaust, or PAC Brake is used on the older ISC engines.
Your ISL has an Engine Brake which is incorporated into the cylinder head.
My ISL doesn't have a 2 stage, or single stage compression brake, it uses a variable geometry turbo as an exhaust brake. But still nothing to lube.
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Old 03-19-2019, 04:13 PM   #8
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Quote:
Originally Posted by PlanBee View Post
My ISL doesn't have a 2 stage, or single stage compression brake, it uses a variable geometry turbo as an exhaust brake. But still nothing to lube.
As does my ISB 340. No mention of ANY engine brake lube in MX checklist.
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Old 03-19-2019, 04:21 PM   #9
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Quote:
Originally Posted by dennis45 View Post
ISL uses a 2stage Engine, or Compression Brake. The Exhaust, or PAC Brake is used on the older ISC engines.
Your ISL has an Engine Brake which is incorporated into the cylinder head.
Some did come with an exhaust brake, usually the 380 hp ones.
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Old 03-19-2019, 05:06 PM   #10
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Quote:
Originally Posted by drwwicks View Post
Cummins ISL on Freightliner chassis and I just completed the chassis and drive line lubrication. Doesn't look like the last service facility didn't do a complete lube. Grease and dirt caked jerks. I downloaded the appropriate lube chart from FL servicing and it makes reference to a few things not on my chassis. Mine has IFS and there are references to different front end and steering knuckle lube which mine doesn't have.

Question is about Pac brake. FL says to lube the 5 points on it but I'n not sure where it is or to access. Then again my application may have a different type engine/exhaust brake setup. 2 stage "engine brake" according to the switch.
Even though Pac and Jacobs make both an exhaust and engine brake, Jake makes the majority of the engine brakes and being two stage, it does sound like it's what you have, so not an exhaust brake and the lube points not applying.
Best access would be through the floor plate, if you do in fact have an exhaust brake.
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