A NON INST RATED PVT PLT LOST HIS INSTS WHILE VFR IN IMC.

Narrative

I DEPARTED OLS AT XA00 AM MST FLYING DIRECT SLC. TRIP UNEVENTFUL UNTIL APPROX 40-45 MI S OF SLC. I WAS FLYING AT AN ALT OF 10500 FT MSL ON TOP FO A SCATTERED CLOUD LAYER IN HAZE/FOG WHEN VISIBILITY STARTED DROPPING. I PROCEEDED TO MAKE A 180 DEG TURN TO THE R. WHEN MY ATTITUDE INDICATOR FELL OVER; I GLANCED AT MY DIRECTIONAL GYRO. IT WAS SPINNING; SO I GLANCED OVER AT MY VACUUM GAUGE AND NOTICED I HAD LOST ALL PRESSURE. BY THEN; I LOOKED AT MY TURN AND BANK INDICATOR AND NOTICED THAT MY TURN HAD DEVELOPED INTO A SHARPER TURN THAN I THOUGHT. IMMEDIATELY; I LEVELED MY WINGS. BY THEN I WAS IN IMC CONDITIONS. I CONTACTED SLC APCH ON 124.30; WHICH I HAD BEEN MONITORING ANYWAY. I INFORMED THE CTLR THAT I NEEDED VECTORS OUT OF IFR CONDITIONS AND INFORMED HIM THAT I HAD LOST MY VACUUM PUMP AND WHICH GAUGES. THE CTLR GAVE ME MINIMUM ALT THAT I SHOULD STAY AT AND GAVE ME VECTORS BACK TO VISUAL CONDITIONS. HE THEN CLRED ME TO ENTER CLASS B AIRSPACE; LNDG UNEVENTFULLY. THE CTLR THAT WAS HANDLING THE TFC THAT LATE AFTERNOON DID AN EXCELLENT JOB.