3406e Caterpillar engine rear Jake brake does not change when activated manually. Front Jake brake operates normally. middle Jake brake pops/sounds whimpy. Any advice would be welcomed
3406E Jake Brake
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Newguy333, Mar 5, 2018.
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Sounds like it's time for a tune-up kit in your engine brakes.
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When was the last overhead done?
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Probably need to take that back Jake off and apart and see if I missed something...... I did also I notice with the front Jake brake solenoid activated a lot of oil came out where the slave cylinder pushes in at the front one number one cylinder but number two didn't have a lot of oil coming out of it... the back one also did the same thing but to no effect. Jake brake did not come on on the back one.
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Which model Jake you have and what is first three of your Serial number. On your hold down bolts, is only one a twelve point?
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340c, 2sw,4 12 point bolts, one big nut
Oxbow Thanks this. -
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Did you inspect slave valves? Did you let oil purge for at least 30 sec when adjusting Jake lash?
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Oxbow Thanks this.
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