Need to replace shaft seal in leaking helm pump (H21S), and stalled almost immediately trying to remove the wheel to drop the pump. The key moved freely, and the wheel moved about 3/16” on the shaft, but now won’t budge. Thought I would check here that I haven’t missed some secret pin or set screw before I go get a bigger persuader. TIA
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Thread: Wheel removal
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01-15-2021 05:46 PM #1
Wheel removal
Mike Peters, 1985 43MY, Cat 3208T, Blue Bayou; 2011 Key West 246BR, F250, Baby Blue; Punta Gorda FL
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Re: Wheel removal
Put a little lubricant on the shaft and let it sit for a bit. You’ve done everything correct so far.
SEVEN
1979 53' MY Hull #563
Antioch, California
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Re: Wheel removal
However, make sure that somebody is holding the pump from underneath when you finally take off the wheel, because it could drop like a rock.
SEVEN
1979 53' MY Hull #563
Antioch, California
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01-15-2021 08:13 PM #4
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01-15-2021 08:31 PM #5Senior Member
- Join Date
- Apr 2005
- Posts
- 3,513
Re: Wheel removal
I had to use a puller the first time I took mine off, 9 or 10 years ago. Did it again last year and it slid right off no problem. '79 43C.
Everyone should believe in something - I believe I will go fishing - Henry David Thoreau
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01-15-2021 11:18 PM #6
Re: Wheel removal
Yep, puller would be my next move.
1978 53' Motor Yacht "LADY KAY V"
Hull number 524
Chesapeake Bay
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01-16-2021 02:14 PM #7
Re: Wheel removal
Thanks, 6” gear puller did it, but not without a fight...on to pump disassembly.
Mike Peters, 1985 43MY, Cat 3208T, Blue Bayou; 2011 Key West 246BR, F250, Baby Blue; Punta Gorda FL
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01-17-2021 09:06 AM #8
Re: Wheel removal
Before you use a steel puller and possible scar or scratch the wheel, why don’t you use a heat gun on the wheel hub and see if the opens it up enough to slip off?
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01-17-2021 10:53 AM #9
Re: Wheel removal
Mike Peters, 1985 43MY, Cat 3208T, Blue Bayou; 2011 Key West 246BR, F250, Baby Blue; Punta Gorda FL
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01-21-2021 12:54 PM #10
Re: Wheel removal
Replaced rod seal and wiper on pump using a -214 quad seal for the rod seal, and a stack of .040 thick urethane backup rings for the wiper - $4.20 at Hydraulic Supply instead of $40 seal kit. Reinstalled, bled by cracking the fittings on the lines a couple of times; spun wheel both directions, tightened up after 8 lock to lock turns, kept spinning, eventually got down to 4 3/4 turns lock to lock. Interestingly, the wheel was 6 turns lock to lock before. The only thing I can think of is I somehow got the piston block deeper into the housing, increasing the engagement between the pistons and the balls, thus pumping more fluid with each wheel turn. I’m not sure which cylinder I have (not marked), but 4 3/4 turns doesn’t exactly match anything on the chart. I guess as long as it works reliably and I stopped the leak I’m happy.
Mike Peters, 1985 43MY, Cat 3208T, Blue Bayou; 2011 Key West 246BR, F250, Baby Blue; Punta Gorda FL