A FLC OVERSHOT A MISSED APCH CLRNC ALT. BY PROC; THE FO HAD SET MAX PWR WITH ONLY 600 FT TO CLB. THE CAPT CITED TRAINING PROC OF MAX PWR ON MISSED APCHS AS CONTRIBUTING FACTOR.

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WE WERE BEING RADAR VECTORED FOR THE ILS RWY 5 FWA AND TOLD TO MAINTAIN AIRSPD OF 170 KTS. AS WE WERE CLRED FOR THE APCH; WE WERE TOLD WE WERE 4 MI IN TRAIL OF A KING AIR AND TO SLOW TO SLOWEST PRACTICAL SPD. A FEW MI LATER WE WERE TOLD THIS SPACING WOULD NOT WORK AND TO MISS THE APCH AND FLY HDG 340 DEGS. I ASKED IF THEY HAD AN ALT ASSIGNMENT FOR US AND WAS TOLD TO MAINTAIN 2600 FT. THE CAPT WAS FLYING AND CALLED FOR APPROPRIATE CHKLIST ITEMS. AS I WAS CLEANING UP THE AIRPLANE I LOOKED UP AND SAW THAT THE CAPT WAS FLYING THROUGH 2600 FT. I POINTED TO THE ALTIMETER PRESELECTOR AND SAID 'MAINTAIN 2600 FT.' HE CONTINUED TO CLB THINKING HE WAS CLRED TO 3600 FT. I STARTED TO LEVEL OFF FOR HIM AND HE REALIZED HE HAD EXCEEDED HIS ALT AND MADE AN IMMEDIATE CORRECTION BACK TO 2600 FT. HIS ALT HAD REACHED 3200 FT BEFORE HE MADE THE CORRECTION. APCH CTL NEVER SAID ANYTHING ABOUT OUR ALT BUT JUST CONTINUED TO VECTOR US AROUND FOR ANOTHER APCH WHICH WAS EXECUTED WITHOUT FURTHER COMPLICATION. SUPPLEMENTAL INFO FROM ACN 302385: APCH CTL TOLD US TO SLOW TO 170 KTS. AT THE MARKER WE WERE CONFIGURING THE AIRPLANE AND SLOWING TO 130 KIAS WHEN APCH SAID THAT SEPARATION WAS NOT GOING TO WORK OUT AND TO GO MISSED APCH; FLY 320 DEG HDG; CLB AND MAINTAIN 2600 FT. WE WERE AT 2000 FT WHEN I CALLED PWR IS SET. WITH ONLY 600 FT TO CLB I SET 70 PERCENT TORQUE AND STARTED THE CLBING TURN. MEANWHILE THE FO PUSHED THE PWR LEVERS TO 108 PERCENT TORQUE. IN THE FEW SECONDS I BROKE MY SCAN AND BEGAN TO RETARD THE PWR LEVERS. WE HAD CLBED TO 3200 FT. I THINK THAT THE TRAINING OF MAX PWR; 108 PERCENT TORQUE FOR EVERY GAR WAS THE GREATER CONTRIBUTOR TO THIS LITTLE MISHAP.