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Jake And Valve Adjustment
Posted 13 October 2009 - 08:59 PM
Anyhow, I noticed my jake doesnt seem to be strong at all. it engages ok, but slowing/stopping power is minimal, unlike the other truck. I have not had the engine touched since i bought it. Someone told me i should have the valves adjusted. Is this the cause of a weak jake?? Thanks!
Posted 13 October 2009 - 09:15 PM
Posted 13 October 2009 - 09:28 PM
Posted 13 October 2009 - 10:32 PM
While your at it, adjust both the valves and the Jakes.
A Rebuild kit is just some pistons and 'O' rings.
You'll need a set of valve cover gaskets and some 'O' ring lube to finish the job.
AND DON"T DROP ANY OF THOSE TINY PARTS DOWN IN THE ENGINE!!!!!! LMAO
It will happen!!
Posted 13 October 2009 - 11:52 PM
Posted 14 October 2009 - 04:31 AM
Posted 14 October 2009 - 04:23 PM
Is this something I should just let the Mack dealer do?? Have them adjust valves and rebuild jake? About how many hours labor would it cost? Im only a few miles from the dealer but dealer prices scare me sometimes, but so does the idea of screwig up my motor trying to save a few bucks! lol
I had mine done a year ago...valves adjusted and jake. They replaced the solenoids, adjusted the valves and had to replace a worn out set screw thingermajigger...around $450 altogether. The biggest deal was finding the time, as the truck has to sit almost over-night to allow the motor to cool to 'room' temperature.
And tech_j is right...my engine brake (the "stealth" brake) is a tiny step above worthless. I think they call it stealth because you don't even know it's on.
Posted 02 December 2009 - 11:35 AM
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