Steering, brake fade

[Michael R.]

Steering pages from MnR

[Michael R.]

brake quiz Q&A for drivers.

NOTE: Procedure item (iv)

[RichardT10829]

Pulled the plungers and cleaned them whilst I was on. Found a part number of CGB - 1193 on one plunger and no part number on the other. The plunger with the CGB number on is slightly shorter than the one without ?

The CGB code as I understood it was a special code for parts manufactured to UK spec ?

My carrier is a 42 unit but didn't expect to find any British kit on it.

[Richard Farrant]

Originally Posted by RichardT10829

Pulled the plungers and cleaned them whilst I was on. Found a part number of CGB - 1193 on one plunger and no part number on the other. The plunger with the CGB number on is slightly shorter than the one without ?

The CGB code as I understood it was a special code for parts manufactured to UK spec ?

My carrier is a 42 unit but didn't expect to find any British kit on it.

As Canadian Carriers are basically a copy of British ones and parts would have had to be interchangeable as much as possible I imagine, the brake expanders and adjusters were Girling brake components, the British Army code prefix for Girling was GB, so the Canadian made parts to British pattern were anointed with CGB. Not British parts but to our design.

[rob love]

CGB is commonly used on Canadian parts which were slightly redesigned from their UK counterparts. It will have nothing to do with Girling, but is more likely to mean Canadian Great Britain.

From another Canadian manual explaining the part numbers prefixes (in this case 40mm guns):

CGB...a) Parts re-designed to suit Canadian production methods not interchangeable with UK couterparts

b) Also, in some cases, these code letters have been utilized in regrouping stores to simplify accounting and storage. In such cases interchangeability will be readily appreciated by a comparison of columns.....

[Michael R.]

Something new... I also associated CGB with Canada Girling Brake.

I have seen the plungers with and without the part numbers. Two different styles of end shapes. Not uncommon to see the slotted end with one side fractured. After using the screw driver method to remove and replace the shoes when the parts are seized, I understand how that can happen.

[Richard Farrant]

Originally Posted by rob love

CGB is commonly used on Canadian parts which were slightly redesigned from their UK counterparts. It will have nothing to do with Girling, but is more likely to mean Canadian Great Britain.

From another Canadian manual explaining the part numbers prefixes (in this case 40mm guns):

CGB...a) Parts re-designed to suit Canadian production methods not interchangeable with UK couterparts

b) Also, in some cases, these code letters have been utilized in regrouping stores to simplify accounting and storage. In such cases interchangeability will be readily appreciated by a comparison of columns.....

My memory lapsed when writing that post, GB is the prefix of Girling component part numbers, just double checked one of their own catalogues. Having worked on the brakes of a British made Carrier, they are marked just GB as I would expect. Nothing to do with Gt. Britain as such.

[rob love]

Well now you have me wondering if it is Girling Brake.

The CGB prefix is comonly used in other areas of canadian part numbers. Optics, like the no32 Snipers Telescopes or cases were marked with that prefix when produced in Canada. Canada also used CGB from the original AN part numbers for the Bofors guns. I am sure I have seen that prefix in other areas too. But to look at the Cdn carrier parts manual, I note the GB and CGB prefix is limited to the brake system. Perhaps I stand corrected, and the CGB in the UC parts catalogue is unrelated to the CGB used elswhere in the Canadian system.