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TOPIC: Hurth 360a

Hurth 360a 25 Sep 2017 00:51 #1

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Port Hurth HBW 360a transmission slipping at or just above 3800 rpm. Engine begins to race. Repairable, rebuildable or call the undertaker?

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Dan
Frostbite Falls, Minnesota
Claudia V. III
1988 - 3218
Gas Drives
Last Edit: by floatyerboat.

Hurth 360a 25 Sep 2017 12:39 #2

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Sounds like a rebuild situation if parts available. ZF took over Hurth many years ago. My boat has a Hurth 630A on one side and ZF 63A on the other due to a complete replacement. Whatever you do (replace or rebuild) - change out your Damper plate with new.
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MY 3988
M/V MMPOWRD
Poulsbo, WA

Hurth 360a 25 Sep 2017 13:40 #3

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I was told by a 3870 owner that the common failure is the forward thrust bearing. For this reason many owners remove both transmissions and switch them from side to side. This puts the forward load on the other thrust bearing. Before doing this I would verify if this is accurate with a trans mechanic.
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Gibraltar, Mi.
1986- 3870- Hino 175's - Just purchased May ,2017
34' Tollycraft- sold
88 26' Shamrock/ Diesel
14' Zodiac Bay Runner

Hurth 360a 27 Sep 2017 16:08 #4

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Don't let it slip too much because the plates warp and then the transmission will not come out of gear.

Harbor Marine in Everett WA is an excellent rebuild source for the NW,
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1997 4788 with Cummins 5.9 (315 hp)
12 ft Rendova with 40 hp Merc 4 cycle
Pacific NW

Hurth 360a 27 Sep 2017 19:58 #5

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Get fixed soon. Like above running too long will damage parts that are no longer available.
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1997 3788/Cummins 6BTA 5.9 M2s
2014 Sea Fox 22 Center Console
2006 Boston Whaler 13 Sport

Vero Beach, Fl.

Hurth 360a 28 Sep 2017 00:11 #6

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Thanks guys,

I got in touch with someone at Harbor Marine a few days back .

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Dan
Frostbite Falls, Minnesota
Claudia V. III
1988 - 3218
Gas Drives
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