*** BUYER MUST TAKE THE FRONT BLOWER COVER OFF, REMOVE THE GEARS AND GET THE BEARING NUMBERS BEFORE ORDERING BLOWER REBUILD KIT. THERE IS NO WAY TO KNOW WHAT KIT YOU NEED UNTIL YOU DISSAEMBLE THE BLOWER AND GET THE FRONT BEARING NUMBERS. IF INSTALLING TEFLON STRIPS BUYER MUST HAVE THE ABIL.ITY TO TURN THE STRIPS DOWN IN A LATHE TO FIT THE ROTORS TO THE BLOWER CASE. *** IF YOU ARE UNSURE OF THESE TWO KEY PARTS OF THE REBUILD IT IS BEST LEFT UP TO A SHOP THAT DOES BLOWER OVERHAULS. ***
RBS carries a full supply of rebuild parts for the B&M 174 Powercharger blower and with this kit you can tune up your blower and enjoy many trouble free miles in your hot rod. Included is two precision hi-speed ball bearings for the front of the supercharger, two rear caged roller needle bearings and four rotor shaft seals.
Rotor shaft seals are a durable double lip seal that measure 1.50" O.D. x .250" thick with a 1.00" shaft. Also included is a gasket set which includes a base gasket, front cover gasket, rear bearing cover gasket and four bearing plate to blower case gaskets. Two are .010" and two are .015" thick so rotor to bearing plate clearance can be adjusted if needed.
Last but not least a sealed hi-speed precision ball bearing for the blower snout with a new spirolox retaining ring and a Buna rubber blower snout seal that measures 2.075" O.D. x .315" thick with a 1.250" blower snout driveshaft. Now one of the most important parts of the rebuild are two new heat treated grade eight gear bolts and two heat treated steel washers to hold the gears in place when the bolts are torqued. These washers in stock form are prone to cracking and allowing the bolt to come loose that holds the gear allowing the rotors to go out of time and you know the rest of the story, it gets ugly.
The blower can be a single row or double row ball bearing so the buyer must know before ordering what bearings are in the front of the blower. Single row bearings are a 6204 and a double row bearing is a 5204.
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