Author Topic: Loctite for retaining the sludge trap cover screw  (Read 462 times)

Offline rowan.bradley

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Is it satisfactory to use Loctite to retain the sludge trap cover screw in the crankshaft without centre-punching the edge of the screw? What grade of loctite is suitable to withstand the oil and the temperature? Obviously this has to be secure, because the consequences of it coming out don't bear thinking about.

Thanks - Rowan


Current bike: 1958 A10 Super Rocket (in bits), purchased in 1967.
Previous bikes: M21

Offline duTch

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Re: Loctite for retaining the sludge trap cover screw
« Reply #1 on: 08.11. 2017 17:01 »

 I was recommended to use the one for hydraulic lines- is green but don't have it at hand for the number...I think the one I used is a Selleys product can dig it out later.

 I like to think it's working fine after 10K miles.... *dunno*
Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
Australia

Online BSA_54A10

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Re: Loctite for retaining the sludge trap cover screw
« Reply #2 on: 09.11. 2017 06:43 »
No No No No No.
You grind the old center punching out of the plug, NOT THE FLYWHEEL.
You then repunch the plug at the same place as the old punching towards the flywheel so the metal on the plug is moved into the hole in the flywheel.
And if you decide to go with the hex headed plug you must get the flywheel rebalanced a the new style plug s only 1/3 the weight of the old one.

Loctite was never used on the bikes when new and it is not needed now when they are old.
Same applies for silicon.
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Trevor

Online JulianS

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Re: Loctite for retaining the sludge trap cover screw
« Reply #3 on: 09.11. 2017 09:24 »
Loctite will be fine.

BSA manual actually recommended it for the A65, see below. No doubt they would have recommended it for A10 had it been available at the time.

Have loctited the plugs in my A10 for many many years with no problems whatsoever.

Online Topdad

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Re: Loctite for retaining the sludge trap cover screw
« Reply #4 on: 09.11. 2017 13:05 »
I also have the sludge trap secured by Loctite ,hex headed plug ,was done by SRM when the sorted the crankshaft  for me 11 yrs ago.No probs so far ! *good3*
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Offline a10gf

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Re: Loctite for retaining the sludge trap cover screw
« Reply #5 on: 09.11. 2017 13:58 »
imo, the (correct) loctite will be fine (used it on my bike) ...then added a few (very small) psychological punches for peace of mind :0)

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