P400 Miura Wheel  and speedo drive


description
 Lamborghini
part number
 OEM
part number
 alt supplier, part number, notes
 approx cost, notes
front wheel bearing inner
 CSN00496
 RIV 609831A

front wheel bearing outer
 CSN00495
 FAG 4204 B TVH
double row , deep groove ball brg
20m id, 47mm od, 18m width
 SKF 4204 but with specs
 to match B TVH
front wheel inner seal
 GN-02230
40 x 52 x 7mm seal
 $15
front tire/rear tire
 SP-01354
 205/15/Cinturato Pirelli HS
 Michelin XWX
 $400 ea
rim strip
 SP-01356


tube, tire
 SP-01355


threaded inner bearing retaining ring - right (right hand thread)
threaded inner bearing retaining ring - left (left hand thread)
 SA-00965
SA-00964


retaining ring set screw lock
 VN-00704
nylock, allen set screw, same as rear wheel





speedo cable
 MT-01407
5104351
 left front wheel Jaeger drive to Jaeger speedometer
 16x1 threaded connector at both cable ends, cable ends exact same, cable length 940mm
speedo "T" drive
 SA03258
T end is 10 od x 6.56 id x 20 long
square is 3.5mm square
total OA length = 192mm
 click here
drive split pin
 SEN03783
6.25 od x 54mm long
 loose fit
screw, drive mount
 VN04210
6 x 18 socket head caps w/wave washers
drive, right angle speedo
 SA03785
drive stamped 710 no other marks
input seal G 8 x 12 x 3     11   INA
output seal  G 6 x 12 x 3    2   INA
 can be easily disassembled and cleaned.
choose lubricant carefully.





Speedometer drive Unit servicing
The speedo drive for a Miura can be disassembled, cleaned, lubed  and reassembled with just home shop tools. After removal and external cleaning, the two obvious lock screws can be removed. I find it best to remove the cable section first. There is an o-ring sealing both sections, so this may take a little twisting and pulling by hand. Remember the lock screws must be removed, these lock screws are going into recessed holes in the removable round plug sections. Once the first section is out , you can understand the other will be the same. There is one loose bushing piece on the first section you will pull - DO NOT loose it.
Actually another technique for removing the first plug section might be to pump grease in to hydraulically push out the first section.
Clean all, lube all with favorite grease, most likely an AL2 spec grease will be fine. Lube the o-rings and everything will slide easily back together.
I recommend some Loctite 222 lo strength for the lock screws.


Wheel Hub info on Lamborghini P400 Miura and others -

The hubs on a Miura are standard 42mm Rudge-Whitworth short spline type. The Rudge-Whitworth splined hub patent (some as early as 1908) was originally used on wire configurations by Carlo Borrani. Many British and European cars have used this hub style as it was quick change technology straight from the race track. The table below shows hub dimensions in millimeters. A Rudge-Whitworth #52 short  is included for comparison.

Rudge-Whitworth
Wheel Type		 Maximum Wheel Bearing  size, dia
 Actual Hub
Spline
Diameter mm		 Number
of splines		 Spline length, short hub
42 42mm
 62.5 75 37
52 52mm
 73 88 37

In Europe most hubs are of the Rudge-Whitworth type with V-shaped standard splines having dimensions as shown in table. In America, and also on Rolls-Royce cars, you may find RAF type hubs which have square splines.
Actual hub diameter is taken across the outside of the splines on the car, not from the wheel hub.
The wheel type designation (42) refers to the maximum size of the outer bearing in millimeters which can be used with that hub design. This is an old designation and does not apply.
Thuis means many British wheels will fit on the Miura for temporary storage or work .
http://www.huskyclub.com/P400partslist.html