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  1. #1
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    Default Wadkin PK Tilt Mechanism.

    I bought my rather beaten up PK dimension saw in July 2015. I'd been chasing a bandsaw but was told it was unlikely to become available, would I like this table saw instead? A month later I was offered the bandsaw. So I had two machines in need of re-assembly and the PK didn't get much done to it.

    PKA 800.jpg My PK saw, before purchase in 2015.

    I use it frequently for ripping. It's still not fully functional, but from time to time I chip away at outstanding jobs.

    The blade raise and lower was very stiff. It's a big job to disassemble. I can't afford the space and time to do a proper job (it'll need the table removed and the motor taken out to fix it properly). So instead I recently cleaned out as much sawdust as I could and added grease to the grease pots, and even squirted some oil about (something I'll regret eventually when too much sawdust sticks to it). It works a lot better but still isn't perfect.

    The blade tilt mechanism is also very stiff, but a look inside shows I can tackle at least part of that job easily.

    tilt1.jpg The tilt mechanism gearing, from the inside.

    Cheers, Vann.
    Gatherer of rusty planes tools...
    Proud member of the Wadkin Blockhead Club .

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  3. #2
    Join Date
    Dec 2010
    Location
    Melbourne, Australia.
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    Default

    Hi Vann, did you happen to blow every thing down in there with compressed Air?,
    I find that helps and a good wash down with kerosene for more stubborn grease and dust.. And a good spray oil.. Wd40, Inox, rp7 etc..
    Melbourne Matty..

  4. #3
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    Default Preamble.

    A bit of background info.

    There are four versions of the Wadkin PK - or at least four significant changes that occurred between 1928 and 1960. With input from Jack and wallace, these are now known as Generations 1 to 4.

    Generation 1 and 2 machines have the raise/lower handwheel on the left front, and the tilt handwheel on the right-hand side.

    PK 412 G2.jpg G2 PKA 412.

    On Generation 3 machines the tilt handwheel was moved to the right front.

    PK 785 G3.jpg G3 PKA 785 - former owned by Clear Out.

    On Generation 4 machines the mechanism was rearranged internally...

    PK 1127 G4.jpg G4 PK 1127 - located in Melbourne.

    ...with all the gears mounted on a single cover.

    tilt4.jpg G4 tilt mechanism gears.

    Going back to my G3 PK...

    tilt1.jpg

    ...you can see that the lower gear and associated cover (to the right - actually located on the front of the machine) can easily be removed. There are just two bolts and two locating pins. At the other end of the shaft from that gear is the handwheel.

    tilt2.jpg

    The horn handle on my handwheel has a piece missing - no doubt the result of a knock as its shaft is bent.

    Cheers, Vann.
    Gatherer of rusty planes tools...
    Proud member of the Wadkin Blockhead Club .

  5. #4
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    Default

    Quote Originally Posted by L.S.Barker1970 View Post
    Hi Vann, did you happen to blow every thing down in there with compressed Air?...
    My compressor hasn't run for at least a year Matty. Another job waiting in the queue .

    Cheers, Vann.
    Gatherer of rusty planes tools...
    Proud member of the Wadkin Blockhead Club .

  6. #5
    Join Date
    Sep 2012
    Location
    uk
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    Default

    If you can blow the ways out on the rise and fall and add some lube, If you tilt the blade flask you might be able to contort your arm to clean the ways with some scotchbrite. The achillies heal of the pk is running without extraction. I used one for a while without it and couldnt move the slider after a while. MDF is the worst for compacting

  7. #6
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    Default Handwheel Cover.

    After removing that cover I took it all apart, cleaned the parts up, and checked that the oil port wasn't blocked. After coming out of the parts wash about 90% of the paint was gone from the cover casting, so I removed the remainder, and I'll repaint it (that'll look odd mounted on the scruffy old base casting ). I also punched out the handle shaft and began repainting handwheel as well.

    tilt6.jpg

    The heads of the bolts and the tee handle where wire brushed and now have a thin coat of BLO (in an attempt to keep rust from bright surfaces).

    Cheers, Vann.
    Gatherer of rusty planes tools...
    Proud member of the Wadkin Blockhead Club .

  8. #7
    Join Date
    Dec 2010
    Location
    Melbourne, Australia.
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    Default

    Quote Originally Posted by Vann View Post
    My compressor hasn't run for at least a year Matty. Another job waiting in the queue .

    Cheers, Vann.
    Oooh noo

  9. #8
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    Default Worm Shaft Cover.

    Looking back at the internals of my G3 PK again I could see that, now that the bottom gear and shaft were gone, the next cover including the shaft with the worm gear should also be easy to remove.

    tilt1.jpg

    It came out easily - again just two bolts and two locating pins.

    tilt14.jpg This one is missing the flip-top oiler.

    It's interesting to see that they used the same pattern for both castings. Economical design .

    tilt11.jpg

    Both marked "PK 18A" (Wadkin's pattern number for the part).

    tilt12.jpg

    Although the machining is a little different.

    tilt13.jpg And the locking tee bolt hole isn't drilled on this one (left casting in photo).

    All castings now at various stages of painting (I hope to be ready to reassemble at the weekend).

    Cheers, Vann.
    Gatherer of rusty planes tools...
    Proud member of the Wadkin Blockhead Club .

  10. #9
    Join Date
    May 2007
    Location
    Sth Gippsland Vic
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    Default

    Quote Originally Posted by Vann View Post
    The horn handle on my handwheel has a piece missing - no doubt the result of a knock as its shaft is bent.

    Cheers, Vann.
    Have you got a spare for the handle Vann ? Or are you making or repairing that one?
    I probably showed you the one I made for My RD Planner. US Walnut is a pretty good match if your substituting with wood .
    If not, Sellys Plastibond with the right colour added would patch the horn up good too .

    This was the Walnut handle .
    IMG_8799.jpg IMG_8803.jpg IMG_8811.jpg

  11. #10
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    Default

    Quote Originally Posted by auscab View Post
    ...US Walnut is a pretty good match...
    That walnut sure looks good.

    Cheers, Vann.
    Gatherer of rusty planes tools...
    Proud member of the Wadkin Blockhead Club .

  12. #11
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    Default The Worm Turns.

    I remember seeing a PK brass worm gear for sale on eBay UK some months back. I wondered if there were any differences between the different Generations.

    So now's my chance.

    G34 worms.jpg G3 worm left - G4 worm right.

    The worm portion looks identical, but the G3 worm has a boss on one end and is fixed to its shaft by a taper pin. The G4 worm has no boss and is fixed to its shaft by a key.

    G3 worm.jpg < G3 - G4 > G4 worm.jpg

    The G4 also has ball thrust bearings either end (green arrows)

    G34 worm.jpg

    I haven't seen inside a G1 nor G2 PK, but I'm reasonably sure the worm arrangement is the same as the G3 - only the shaft is longer and has the handwheel mounted on the end.

    Neither the G1 nor G2 PK has a separate handwheel shaft. It appears the gear on the end of the handwheel shafts is exactly the same for both a G3 and G4 PKs - albeit mounted the other way around.

    Handwheel shaft.jpg

    All shafts are 1" diameter.

    Cheers, Vann.
    Gatherer of rusty planes tools...
    Proud member of the Wadkin Blockhead Club .

  13. #12
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    Default Another Worm Turns.

    Quote Originally Posted by Vann View Post
    I remember seeing a PK brass worm gear for sale on eBay UK some months back...
    A-ha, found it - a screen dump dated February this year.

    PK Worm G4.jpg
    Looks like it's the raise/lower ("rise & fall") worm, not the tilt worm. And it's keyed.

    Cheers, Vann.
    Gatherer of rusty planes tools...
    Proud member of the Wadkin Blockhead Club .

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