How Necessary ARE Some of These Specialized Power Steering Pump Tools?

Gerald Morris

Senior Member
Joined
Mar 9, 2016
Messages
2,303
Reaction score
1,181
Location
Tucson
Gooood Evening Moparians!

Before I start any headstanding or other front floor contortionism in Gertrude, I have a spotty power steering pump to at least temporarily replace. It began jerking hard on the belt some weeks ago, about the same time we noticed a little noise from the OTHER accessory, the damned alternator! Talk about a cascade of troubles! I saved the alternator for eventual examination; the front bearing makes a LITTLE more noise than a really good one should, but I suspect I could use it another year before really worrying about it seizing.

NOT SO with this old TRW! I checked the fluid, finding a somewhat darker clear tan than I like, doubtless from heat and residual crap in the old steering gear, but NO PINK! I worried that the Chebbie Chimp might have perpetrated that atrocity. He's off the Hook for THAT, leaving ME to DO SOMETHING ABOUT THIS WONKY PUMP! Until September, it had served us sans trouble, and I did purge the steering gear with over a gallon of new fluid when I transferred this pump to Gertrude. But one can never be sure of any dubious "rebuild" from any but the VERY BEST folks. So, I decided to spruce up the 1968 TRW pump myself.

Removing the reservoir went FAR TOO EASILY, and I know that a fair bit of the leaking which this pump was afflicted with last year comes from that, BUT,

The front shaft seal also looks to be worn to a point warranting replacement. I took the pulley off just so I could do this anyway, so i might as well.

Yet Chrysler (Miller) Tool C-3783 no longer abounds in auto parts stores, or even ePay. Plenty cheap, and some not cheap seal tools appear to exist, some of which can be rented from The Usual AutoSlop Store as I did for the pulley puller, after my own didn't fit down past the hexagonal 1/2" shaft end. (Suppose I could have used a 5/16" nut in that to give my tool something to press against but...) Anyway, an electric impact wrench and large Crescent makes pulley removal absurdly easy with a proper puller. Will remember that for alternator work later.

I can use possibly a socket or bit of PVC pipe (3/4" Sch 40 I think) to drive a new front seal on, but am a little at a loss for improvising a seal remover here. I DON'T want to scratch that shaft!

Suggestions will be MUCH appreciated.
 

thethee

Well-Known Member
Joined
Feb 13, 2021
Messages
902
Reaction score
978
Location
Netherlands
Not the same pump, I know, but when I got a seal kit for my Federal (1.06) power steering pump a while back it also came with a new fibre gasket for the internal so I ended up completely disassembling the pump for inspection and cleaning. Don't know if you're up for that as reassembly was kind of a pain, but is sure was easy prying that front seal out of an empty pump housing lol.
 

Big_John

Illegitimi non carborundum
FCBO Gold Member
Joined
May 21, 2013
Messages
16,299
Reaction score
22,219
Location
Marcellus, NY
I've pulled out various seals over the years by poking a small hole in the metal portion of the seal and screwing in a sheet metal screw (or a couple screws, depending on the size). A pair of vise grips and a little cussing and it comes out.

Not sure if that would work with the seal you are talking about, but that's my contribution.
 

Gerald Morris

Senior Member
Joined
Mar 9, 2016
Messages
2,303
Reaction score
1,181
Location
Tucson
I've pulled out various seals over the years by poking a small hole in the metal portion of the seal and screwing in a sheet metal screw (or a couple screws, depending on the size). A pair of vise grips and a little cussing and it comes out.

Not sure if that would work with the seal you are talking about, but that's my contribution.

I saw you mention this technique in another thread, and knew I could count on you here. :) I too have used this approach on sundry seals. This one has a fairly sturdy shell, which suggests it likely was installed at the factory or during the 1970s, before Gertrude became a civilian. I see Timken still makes this seal, but have no complaint about what I got in the Edelmann kit so I'll use that.

That front seal MUST be replaced, regardless, but given several factors here, I'm inclined to shop for a tool, foreseeing a bit more of this sort of labor within the next few years, God-willing, for OTHER MOPAR A,B,C,Y bodies and/or trucks! If we can snag that acre out of town, we plan to fill part of it with "projects" to keep me occupied in my "Golden Years."

Not the same pump, I know, but when I got a seal kit for my Federal (1.06) power steering pump a while back it also came with a new fibre gasket for the internal so I ended up completely disassembling the pump for inspection and cleaning. Don't know if you're up for that as reassembly was kind of a pain, but is sure was easy prying that front seal out of an empty pump housing lol.

Very similar pump though. I take it you had to press the rotor and slip assembly out the front the same way specified for these TRWs? The pump still made good pressure, despite a FILTHY reservoir interior, as the dust actually coated all surfaces evenly and had set like paint. I generally loathe disturbing a WORKING machine, and only have proceded as far as I have with this pump because of the leaks. There is no discernible play in the rotor shaft, just leaking around it on the front.

I currently plan to replace that front seal and the reservoir O ring, then reassemble and replace the other one for a more complete examination. BUT, if I see any reason to go further, I certainly will. I've done pneumatic rotor/slip assemblies before, which are smaller, and MORE aggravating than this benignly sized one. Still, I'd 'druther NOT go any further than sealing the front, then using a shaft-only screw press to replace the pulley, though I could CAREFULLY support the shaft from the back and use my 20 ton press if needs be.
 

thethee

Well-Known Member
Joined
Feb 13, 2021
Messages
902
Reaction score
978
Location
Netherlands
Very similar pump though. I take it you had to press the rotor and slip assembly out the front the same way specified for these TRWs? The pump still made good pressure, despite a FILTHY reservoir interior, as the dust actually coated all surfaces evenly and had set like paint. I generally loathe disturbing a WORKING machine, and only have proceded as far as I have with this pump because of the leaks. There is no discernible play in the rotor shaft, just leaking around it on the front.
Apologies Gerald, I looked into it a little more just now and although these pumps look similar from the outside, it turns out that they are in fact a completely different animal... On the Federal pump everything exits out the rear of the pump body whereas the TRW pulls some out the front:

1669050140180.png
1669050158894.png


I did however come across this video of a guy taking apart and putting back together a TRW pump, which also shows all the tools he used. Maybe it'll be of some help to you.

 

Gerald Morris

Senior Member
Joined
Mar 9, 2016
Messages
2,303
Reaction score
1,181
Location
Tucson
Thanx big Big BIG bro! I saw this video referenced, but haven't got around to viewing it yet. As far as the Federal being a back door vs front door sort of rotary pump, one still has to push the rotor out to get the thing apart. This evening, I had to patch a leak in my heater hose hookup through the firewall and replace the rest of the heater hose, all after taking the Babushka to an OB/Gyn clinic for an ultrasound session of our 3rd spawn. As always, damn kiddoes make for BUSY DIZZY DAZE man.
 
Last edited:

Gerald Morris

Senior Member
Joined
Mar 9, 2016
Messages
2,303
Reaction score
1,181
Location
Tucson
I did the seal on a TRW a few years back

TRW p/s pump reseal
Now that I replaced the crappy front brakes on Gertrude, I can GET BACK to that pump. The front drums were swaged onto the hubs, and were the FACTORY ORIGINALS, and worn to unholy thinness by the cheap modern shoes the flipper used. I swapped backing plate with good asbestos shoes and nice newly turned Dynamic Friction drums, and she brakes MUCH smoother.

ANYWAY, THANK YOU FOR AN EXCELLENT THREAD AND A JOB WELL DONE! Your method of popping that seal will be mine, as I have plentiful punches and small chisels, all top grade stuff to do that old seal shell quickly and easily. I have Lubriplate grease in several forms, thx to a friendly industrial supply, which I'll use as you did the petroleum jelly. (Mind you, I primed my oil pump w vaseline until I wised up and switched to 10W-30.)
 
Top