SERVO PROBLEMS

[JULIOMC]

HI GUYS: I THINK THE SERVO GOING OUT .
SOMETIMES WHEN I CUT OFF THE MOTOR, I HEARD
LIKE AIR GOING OUT FROM THE SERVO. AND THE PEDAL GET HARD TO PUSH . I CHECK
ALL THE HOSED AND LOOK FINE. ANY

 

[DJP]

HUH? air going out from the servo? What are you talking about? WHAT SERVO? Sounds to me more like belt squeal when you cut the engine.

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89 D-250 LE 5 speed 3. 55 Limited slip, Banks Intercooler, 'Ol Blue Specials, K&N, Full Boar Muffler, 3" exhaust, Diesel Dynamics Stage 1 kit, Boost/Pyro. & 16cm2 215K miles.

 

[BushWakr - RIP]

I'm interpreting your problem as being the brake booster leaking down. I have noticed that after I shut down, if I hold pressure on the brake pedal for a while it will slowly settle to the bottom and not recover. I have also thought I heard a very faint hiss near the booster after shutdown as well. The brakes seem to behave normally when running/driving etc though. What do you guys think????

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93. 5 D250 4X4,HD Spring Pkg, Rancho 7000's, Rear Swaybar,Dual Shock Front Stabilizer,BD Injectors,31/2" Mandrel bent exhaust,16cm 'Hot End',Modest Pump Tweaks/Timed,K&N Air,Isspro Pyro,Tach,transmission Temp,Auto Meter Oil Filled Boost Ga. , 3:54's, 4 Speed Auto, Clubcab, Aftermarket Reclining Buckets w/ctr Drop Down seat/console, Black over Silver, 21psi,285-65R-16's,American Racing Clear Coat Mags, Amsoil 15W-40HD Marine,12,000 lb. Warn Winch,KC Spots. 101,300 Kms (63,000 mi's).