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Re: [GMCnet] Any experience with Lock and Lube Grease coupler? [message #327093 is a reply to message #327088] Thu, 14 December 2017 10:05 Go to previous messageGo to previous message
GMC.LES is currently offline  GMC.LES   United States
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Registered: April 2014
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Matt
I have rarely seen a zerk that was so excessively worn on the exterior that the coupler wouldn't hold. It does happen, but usually from external interferences do rubbing. I have seen zerks that were partially blocked internally, requiring excess pressure to get the grease to flow into the joint. The excess pressure can cause the coupler to pop off.

I would definitely try new zerks on the most problematic grease points. It's a cheap step to try.

But I'm sure you already knew this!

;)

Les Burt
Montreal
'75 Eleganza 26'


> On Dec 14, 2017, at 10:18 AM, Matt Colie wrote:
>
> Les Burt[1
>> wrote on Wed, 13 December 2017 07:39]Generic grease gun couplers are a PITA, unless you understand how to use them. For a simple trick, keep
>> reading.
>>
>> When new, grease gun couplers can be hard to engage the zerk, and harder to remove. If under pressure during removal, you risk breaking the zerk
>> if you force the coupler. Under these circumstances, you often damage the jaws, and this is why the coupler won't stay engaged on older grease guns.
>>
>>
>> The above is because we are not using the generic coupler to its full potential.
>>
>> SIMPLE TRICK
>>
>> The coupler jaws are held in place with a threaded collar. When new, the collar is quite tight. Before first use, loosen that collar with pliers,
>> and re-install barely finger tight.
>>
>> Now, if your coupler is hard to remove, don't force it. Loosen the collar first, and the coupler will release the zerk without effort and
>> frustration.
>>
>> I was changing couplers every few months until I started doing the above. Now the couplers have lasted several years without problems, and they no
>> longer fall off the zerk by themselves. I now rarely need to hold the coupler while greasing, and can operate my guns with both hands. Most of my
>> guns have 14" hose wips and long levers, which require both hands to operate.
>>
>>
>> I can't take credit for the above trick as it was posted on GMCNet a while back.
>>
>> Les Burt
>> Montreal
>
> Les,
>
> I have been tending to the couplers I have carefully, but the problem with the two handed gun was that working even with the coupler hard to get on,
> the effort of working the gun would sometimes pop it loose. So, I got a good one handed gun and I can hold the coupler straight while pumping, but
> pumping takes at least twice as long.
>
> What all of this has me wondering is if the fittings are maybe too worn to hold the coupler well. As I will soon have most of them out from under the
> coach, it am going to look for this case.
>
> I am concerned that the new locking coupler will be too large to get on the fitting in cardan joint in the bottom of the steering shaft. That one is
> tight.
>
> Matt
> --
> Matt & Mary Colie - '73 Glacier 23 - Members GMCMI, GMCGL, GMCES
> Electronically Controlled Quiet Engine Cooling Fan
> OE Rear Drum Brakes with Applied Control Arms
> SE Michigan - Twixt A2 and Detroit
>
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