Paul Bakker

Are the RDK sensors affected when my flat discs are powder coated ?
Can they resist the heat of the proces ?

Last year my Jeep Wrangler rubicon rims were powdercoated in black. I saw the proces itself and I believe the rims are heated to great extent. Also a power-current is involved in the proces.

Thanks,
Paul

Tails

The RDK units are acutually pressure switches and I know they can be effected by too much pressure, however, I don't know about temperature from anything I have read. The RDK system is temperature compensated as the tyre pressure increases with temperature.

Too much increase may have a depremental effect on the pressure switched installed in the rims, especially if they become deformed.

I would suggest that you pose your question to a technical manager at and official Porsche Centre.

Tails 1990 928S4 Auto

Vilhuer

You need to remove sensors from wheels and very likely need new seals when puting them back in. There is factory special tool set which is used to install them. Tools can be ordered from Porsche with their own part numbers. There is also black plastic air quide on top of sensors which obviously need to be removed.

Also its important that air pressure put into tires do not exceed 3.5 bar. Usually when tire shops mount tires they "pop" them on with higher pressure. This can damage sensors.

Ragnar Joensen

I got my Club Sports powdercoated and went through the same process.

I got the sensors out by firstly removing the black plastic cover, then unscrewing the sensors with a pair of locking ring pliers on inside (tyre side), and polygrip on the outside. The pliers need to be inserted in the detents of the sensors.

Just get a good, firm grip on the outside, and do not let the poygrip slip. Then You will get the sensors out without damage.

They sensors are not torques much.

Remember to replace the O-rings. You may also want to replace the covers, as they tend to get brittle and crack up after 20 years in service


Ragnar

pcar928fan

Sensors must be removed first. The manual says to use petroleum jelly on the NEW seals when you put them back on. It also says to use new "nuts" to hold the sensor in place...don't use the old ones again. IIRC 15 lb-ft of Tq is all that is required when you put them back on... I bought and used the tools to R&R mine 10 years ago...

Rob Edwards

There was a set of the RDK tools (9273 and 9274) on the German version of Ebay about 3 weeks ago for a ridiculously low price. They don't look like they're there now but it might be worth checking completed auctions and getting in touch with the seller (?)

EDIT:

http://cgi.ebay.de/Porsche-928-RDK-R...#ht_500wt_1182

Vilhuer

There was another auction also few weeks ago in German eBay. In it price went up to 150 euros.

Factory part numbers for tools are:
000 721 927 30
000 721 927 40
They follow normal special tool numbering where 000 721 xxx x0 is order number. If special tool has number like 9280/1 or whatever order number is 000 721 928 01 meaning also .../1 is included into order number. Maybe vendors can say if they are still available from Porsche. They can't be found with normal parts search from usual places like Mittelmotor.de and 928gt.com. Maybe they are no longer available from factory. Its not too difficult to build tools for the job.

Rob Edwards

This place purports to have them, though I have not reality tested it by trying to buy anything.... :

http://www.worldimpex.com/search_by_...27+30&x=25&y=5

And FWIW they appear to be able to get a large number of the Porsche factory tools. I was bored at a 3 hour gymnastics meet a few weeks ago and made a list of all the 928-specific Porsche tools out of a factory catalog on the Morehouse CD's. Here's the list by part # and description. I attached the whole Excel file too with prices from this Impex site. (Many prices have changed in the interim- I bet their system just queries the Porsche prices and has no bearing on what's really available....).

Link to file:

https://webfiles.uci.edu/redwards/pu...203-15-10.xlsx




Number Description Part # Notes
P20 Piston Ring Gap Grinder 000 721 020 00
P85 Pressure piece 000 721 085 00 wheel bearing tool (?)
P200a Valve Spring Compressor 000 721 200 10
P201 Engine Stand Adapter 000 721 201 00 for securing engine or transmission to repair stand
P206 Gauge 000 721 206 00 for measuring valve guides - go-no-go gauge
P254 Driver set 000 721 254 00 bearing press set
P254a Pressure piece 000 721 254 10 bearing ring tool
P254b Pressure piece 000 721 254 20 bearing ring tool
P254c Pressure piece 000 721 254 30 bearing ring tool
P254d Pressure piece 000 721 254 40 bearing ring tool
P263 Press Pipe 000 721 263 00 bearing press tool
P264b Press piece 000 721 264 20 differential bearing press
P378b Connecting pipe 000 721 378 20 for checking fuel pressure along with VW1318
P378c Connection line set 000 721 378 30 for checking fuel pressure along with VW1318
PNA 500 521 00 Service Seat Covers PNA 500 521 00
PNA 721 000 Pinout box PNA 721 000
PNA 721 002 ATF fill coupler PNA 721 002 for filling automatic transmission on 928
PNA 721 003 VW 387 Dial indicator holder PNA 721 003
PNA 721 004 Electrical test lead set PNA 721 004
PNA 721 005 ABS II system tester PNA 721 005 Used to check the ABS system
PNA 721 006 A/C pump holder PNA 721 006 for R&R of compressor shaft seal nut
PNA 721 007 A/C clutch puller PNA 721 007 for removal of A/C clutch
PNA 721 008 Puller PNA 721 008 for removal of A/C compressor woodruff key
PNA 721 009 Press PNA 721 009 for installation of A/C compressor woodruff key
PNA 721 010 Puller PNA 721 010 for removal of A/C compressor seal seat
PNA 721 011 Puller PNA 721 011 for removal of A/C compressor axial shaft seal
PNA 721 012 Mandrel PNA 721 012 for installation of retaining ring on A/C compressor shaft
PNA 721 015 Front Fender Cover PNA 721 015 3 piece set
PNA 721 020 Release tool PNA 721 020 for removing Alpine CD player from dash
PNA 721 021 Release tool PNA 721 021 for removing Blaupunkt radio from dash
PNA 721 022 Valve Spring Compressor PNA 721 022 Looks like Schley products valve spring compressor set
PNA 721 026 Carbon blaster Adapter PNA 721 026 for removing carbon buildup on valves
PNA 721 028 ABS 55 pin adapter PNA 721 028 used to check ABS system and sensors
US1006 12mm allen socket
US 1008a Piston ring compressor
US1020 Valve Spring Compressor looks like C-clamp/vise grip version

more US tools…..

VW267a Pressing tool for pressing out tie rod ends
VW313 engine/tranny bench clamp
VW382/10 dial gauge extension for measuring backlash on 928
VW385/1 measuring bar for measuring pinion depth
VW385/4 Centering disc used with VW385/1 for 928
VW385/14 gauge plunger, 30 mm for use with VW385/1
VW385/17 magnetic plate
VW385/30 universal master gauge
VW387 dial indicator holder
VW388 measuring lever
VW433 seal installer
VW441 Pressure piece for R&R of rear wheel bearing
VW455 Pressure piece for installing trailing arm bushings
VW459 Pressure piece for installing rubber mounts
VW521/4
VW 771/1 slide hammer for use in conjunction with 9165 to remove hub dust caps
VW1342 oil pressure gauge
H794U-3 piston ring compressor
2012 Spanner for R&R of fuel gauge transmitter
2012a wrench for R&R of fuel level sender
3015 9 mm reamer for reaming valve guides
3120 7 mm reamer for reaming valve guides
9114/1 connecting pipes 000 721 911 41 for testing fuel pressure along with VW1318
9122 000 721 912 20 oil temperature gauge

9122/2 oil temperature probe 000 721 912 22 for measuring oil temp while testing CO content
9125 seal installer 000 721 912 50 for front crankshaft seal
9126 seal installer 000 721 912 60 for rear crankshaft seal
9127 engine holder 000 721 912 70 for holding engine on assembly stand
9128 engine support 000 721 912 80 T-shaped support for holding engine on engine stand
9130 holder 000 721 913 00 for holding flywheel
9131 belt tension gauge- use 9201
9132 lock bolt 000 721 913 20 used to lock and center the steering rack
9133/1 6 mm allen socket 000 721 913 31 long allen socket for R&R'ing camshaft housings
9134 Allen screwdriver 000 721 913 40 long allen driver for adjusting CO content
9135 adjusting tool PNA 721 029A for adjusting headlight washer aim
9137 Holder 000 721 913 70 engine hoist for 16V engines
9138/1 Gauge 000 721 913 81 for measuring installed length of valve springs
9140 Extractor 000 721 914 00 used in conjunction with 9148 for 928
9142 Holder 000 721 914 20 for holding transmission shaft for 928/911
9143 Socket 000 721 914 30 for loosening and tightening transmission shaft, in conjunction with 9142
9144 Holder 000 721 914 40 for R&R of drive pinion
9145 Sleeve 000 721 914 50 used in conjunction with VW521/4
9146 Pressure pad 000 721 914 60 used in conjunction with P254 to press in selector fork seal
9147 seal installer 000 721 914 70 for installing trans case cover seal in conjunction with P254
9148 Puller 000 721 914 80 For pulling out transmission input shaft in conjunction with 9140
9149 Holder 000 721 914 90 For holding transmission on engine stand, in conjunction with P201
9150 Dial gauge extension, 20mm 000 721 915 00 measurement of differential, in conjunction with VW 385
9154 Mandrel 000 721 915 40 F- axle bearing installer
9155 shift lever 000 721 915 50 for shifting gears on a removed transmission
9157/1 Holding device 000 721 915 71 for holding oil pump drive gear
9160/1 mityvac vacuum pump 000 721 916 01
9161 Toothed element 000 721 916 10 for locking flywheel with engine installed
9161/1 Toothed element 000 721 916 11 for locking flywheel with engine installed- teeth at 45o angle
9162 Transmission holder 000 721 916 20 for mounting a 3-speed automatic transmission on an engine stand
9163 Transmission holder 000 721 916 30 for R&R of transmission
9163/1 Transmission holder 000 721 916 31 for R&R of transmission in conjunction with 9163
9164 Chain 000 721 916 40 for suspending transmission from sway bar when removing rear suspension
9165 Puller 000 721 916 50 for removal of hub dust caps (pre GTS)
9170 extension hoses 000 721 917 00 for checking transmission shift pressure, in conjunction with gauges
9180 seal installer 000 721 918 00 to install the 3-speed transmission rear housing seal
9180/1 seal installer 000 721 918 01 for installing rear transmission housing seal
9183 wrench 000 721 918 30 for R&R of track arm
9187 Allen screwdriver 000 721 918 70 super long allen wrench for adjusting CO content
9190 wrench 000 721 919 00 big socket for R&R of fuel level sender
9195 sleeve 000 721 919 50 for protection of oil pump seal during installation
9201 belt tension gauge- use 9201 000 721 920 10 for checking belt tension of camshaft, balance shaft, and alternator belts
9201/2 calibration bar 000 721 920 12 calibration bar
9202 Pressing tool 000 721 920 20 for installation of camshaft seals
9203 Sleeve 000 721 920 30 for protection of crankshaft seal during installation
9204 oil filter wrench 000 721 920 40 For 944 and 928
9208 Gauge 000 721 920 80 for measuring spacing of steering shaft U-joint
9209 wrench 000 721 920 90 for R&R of electric mirror switch
9211 gauge bridge 000 721 921 10 for measuring distance between flywheel and crankcase with automatic trans
9216 holder 000 721 921 60 for holding automatic transmission on engine stand
9218 wrench 000 721 921 80 for R&R of pinion nut in conjunction with 9219
9219 Socket 000 721 921 90 for R&R of pinion nut in conjunction with 9218
9220 pressing out base 000 721 922 00 for R&R of valve guides
9220/1 spot facing cutter 000 721 922 01 for cutting off old valve guide before pressing out
9221 valve guide mandrel 000 721 922 10 for pressing in valve guides to proper depth
9223 Mandrel/shift rod driver 000 721 922 30 for installing shift rod guide bushing and seal installation
9224 Mandrel 000 721 922 40 Used to press out old valve guides
9225 seal installer 000 721 922 50 Use 9225/1
9225/1 seal installer 000 721 922 51 for installing valve stem seals
9226 camshaft bridges 000 721 922 60 for R&R cams on 85-86 32V engines
9228 valve guide R&R kit 000 721 922 80 tool set consisting of 9220, 9220/1, 9221, and 9224
9230 flex driver 000 721 923 00 flex screwdriver for adjusting CO
9232 dial gauge extension 000 721 923 20 for adjusting cam timing - fits on Mitutoyo 2050S
9233 sleeve 000 721 923 30 for protection of camshaft seal in conjunction with 9234
9234 seal installer 000 721 923 40 for installing camshaft seal in conjunction with 9233
9235 pliers 000 721 923 50 pliers for removal of relays
9237 puller 000 721 923 70 for removal of valve stem seals
9237/1 half shells 000 721 923 71 replacement half shells for 9237
9238 pipe 000 721 923 80 for adjusting pinion
9240 gauge 000 721 924 00 for measurment of installed valve spring height- 1 for intake, for exhaust
9240/1 gauge 000 721 924 01 for measurment of installed valve spring height- 1 for intake, for exhaust
9242 valve spring compressor 000 721 924 20 for R&R of valve springs with engine installed
9248 camshaft bridges 000 721 924 80
9249 gauge 000 721 924 90 for measurement of valve guide wear
9257 switch 000 721 925 70 for manual detonation of airbag during scrapping process, in conjunction with 9257/1
9257/1 leads for switch 000 721 925 71 for use in conjunction with 9257
9266 000 721 926 60 Tool for removal of Bosch 2 pin electrical connectors/ISV
9268 tester 000 721 926 80 Bosch Spanner
9268/1 cables 000 721 926 81 looks like adapter for 87-88 14 pin connector
9268/2 adapter cable 000 721 926 82 adpater cable from Spanner output to input of Hammer 19 pin diagnostic cable
9269 adapter cable 000 721 926 90 used to repair seats with memory
9273 RDK socket 000 721 927 30 for R&R of RDK sensor
9274 RDK socket 000 721 927 40 for R&R of RDK sensor
9288 Bosch KTS 301 tester 000 721 928 80 Bosch Hammer
9288/1 connecting cable 000 721 928 81 adapter cable from Hammer to 19 pin diganostic cable
9288/2 charging unit 000 721 928 82 A/C adapter
9288/3 diagnostic cable 000 721 928 83 For connecting Hammer to OBDII vehicles
928GV software module for Hammer 000 721 928 GV 008 EPROM tester
9293 test plug 000 721 929 30 For activation of on board diagnostics
9300 connection lines 000 721 930 00
9300/1 connection lines 000 721 930 01 for testing transmission pressure in conjunction with gauges
9301 holder 000 721 930 10 for R&R of torque converter
9303 gauge 000 721 930 30 for determining pin length of pressure modulator
9304 mounting device 000 721 930 40 for R&R of brake band piston in the A22 transmission
9305 assembly valve 000 721 930 50 for installing the brake band piston in the A22 transmission
9307 mandrel 000 721 930 70 for securing the gear set during assembly and disassembly of the A22 transmission
9308 assembly sleeve 000 721 930 80 for assembly of the clutch in an A22 transmission. P930
9309 mounting device 000 721 930 90 for assembly and disassembly of the clutch piston in an A22 transmission
9310 rinsing adapter 000 721 931 00 for rinsing of torque converter in conjunction with a suitable drive unit.
9312 pipe 000 721 931 20 used when assembling final drive unit.
9313 gauge 000 721 931 30 for measuring the gearset on an A28 transmission
9314 Mandrel 000 721 931 40 for securing the gear set during assembly of the A28 transmission
9315 mounting device 000 721 931 50 for assembly operations on K1 and K2 of an A28 transmission
9316 mounting device 000 721 931 60 for R&R of the brake band piston in an A28 transmission
9317 assembly sleeve 000 721 931 70 for installing the coupling for K1 and K2 in an A28 transmission
9318 assembly sleeve 000 721 931 80 for assembly of K1 in an A28 transmission
9319 assembly sleeve 000 721 931 90 for installing the primary pump in an A28 transmission
9320 gauge 000 721 932 00 for measuring the free play at B1 in an A28 transmisison
9321 alignment pins 000 721 932 10 for alignment of the pinion assembly to the transmission housing
9322 lock tabs 000 721 932 20 for securing rollers on the sprag clutch of the A28 transmission
9323 dial gauge extension 000 721 932 30 for measuring pinion dpeth in conjunction with VW 385
9509 pressure gauge 000 721 950 90 for measuring hydraulic pressure in conjunction with various adapters
9509/1 pressure hose 000 721 950 91 Used in conjunction with 9509
9509/2 pressure hose 000 721 950 92 Used in conjunction with 9509
9510/1 torque adapter 000 721 951 01 used to check PDAS and PSD systems
9514 measuring gauge 000 721 951 40 used for setting clutch packs for the PSD and PDAS differentials
9524 socket 000 721 952 40 used to R&R pressure switch in brake pressure and PDAS pumps
9540 test adapter 000 721 954 00 used to measure alarm system inputs
9589 yoke for water cooled engines (996?)