Brake Servo Replacement

[Frank C.]

My servo started to "hiss" when I put on the brakes and the result was no assist and poor braking. Thinking I had an original Girling unit I ordered the Moss repair kit but noticed that when I removed the servo, it was slightly different than the units shown. The main difference seems to be in the vacuum chamber, they show the cover removable with screws but mine is crimped all around and doesn't look like it is easily repairable. That seems to leaves me no option but replacing the entire unit. Ok, Moss shows two options here, (981-173) listed as a Lockheed replacement for $389.95 and (981-174) listed as an aftermarket replacement for $239.95. Both seem to need a $124.95 bracket set to install.
My question: Given the large difference in price, which unit should I go with? Or, is there another option.

Thanks for any help you guys can provide.

 

[Jeepster]

I had no end of trouble fitting an aftermarket replacement unit. In the end I sent my original Girling for a professional rebuild. Wish I had done that to start with. It may be worth contacting a professional rebuilding company as they may be able to work on your servo?

 

[Keoke]

I do not know. However, A mire economical fix might be to call Power Btake Exchange 800-232-8366 and have yours rebuilt

 

[Patrick67BJ8]

I do not know. However, A mire economical fix might be to call Power Btake Exchange 800-232-8366 and have yours rebuilt

I had mine rebuilt by them last year and it was about $295.00. Came back clean & painted and looking good.
Service was pretty quick too.

 

[RAC68]

Hi All,

When my original Girling booster started leaking, I acquired a Lockheed replacement from a friend at turned out to be a very reasonable price. After designing a mounting bracket that took advantage of the original bolt locations, I installed the unit and was disappointed to find a far less boost than the original. The Lockheed was installed for about a year during which I found a replacement for the broken Girling air valve and rebuilt and reinstalled the unit. Over the 20 years since the rebuild, the Girling has performed well; however, the level of boost has never been close to the feel provided in a modern car.

If my Girling fails again, I am seriously considering eliminating a booster completely and changing the master to compensate. When changing the master, I would consider a dual system, for safety reasons, and do everything possible to make the installation look as if original.

Although I agree that a professional rebuild of your Girling unit is most advantageous, I found rebuilding the unit to take a reasonable effort. The only issue I would expect to cause a problem is the cost and shipping of the spray lubricant for the air chamber. Back when I performed the rebuild, the spray lubricant was not considered a hazardous material and an aerosol was only $14.

All the best,
Ray (64BJ8P1)

 

[Bob_Spidell]

Sounds like you have the MK2B servo; used as a replacement or (arguably) as original. These people have a rebuild kit, including a replacement clamp:

https://jlspares.co.uk/sealkits.htm

 

[Frank C.]

Well,thanks for all the advice but in the end I ordered a replacement from Moss. I tried the 800-232-8366 number but only got a recorded commercial that had nothing to do with brakes so I thought I better just get moving and get the part (We're taking a trip with the cars in 2 weeks and couldn't wait for a rebuild anyway).
Anyway, as unusual, thanks to all that responded.