29 January 2017

Morgan 4/4 up in the air

What started as a minor job now grows into a full brake overhaul following a small loss of brake fluid.
Thinking it was the master cylinder I replaced it without any bother together with the front pads which were two thirds worn down.
At the stage of purging the lines of air I discovered that one of the rear brake cylinders was the true culprit so both rear cylinders will be replaced shortly.
Removal of the shoes is the fiddly part because without proper tools the job to get retainer springs off is a case of applying long nosed pliers and a screwdriver to prise them out of the brake shoe holes.
A weak point for the Morgan DIY owner here is a lack of good guidance on the subject. The few diagrams on the GoMog workshop manual are very confusing because the brake drum applications have been altered many times by the Morgan Factory. The diagrams are wrongly labelled and referenced in the accompanying text and therefore even harder to follow. Leading shoe and trailing shoes are said to be removed, firstly the trailing and secondly the leading shoe. Actually the reverse is the case. The leading shoe detaches first on my 2008 4/4. though this may not be the case with earlier models of the 4/4.
Also pictured wrongly is the orientation of the handbrake auto adjustment compensator held in by circlips picture on the trailing shoe whereas on my 4/4 it is fixed to the leading shoe as shown here. (To the left in both these pictures and closest to the front of the car)

Offside rear as removed and exposed

Another issue I have is with the peg which secures the handbrake lever to the shoe seen here on the upper right. It is held in place by a spirol Rotor Clip instead of a C or E type circlip. I would like to find a supplier of this clip as original fit. The manufacturer is in Sheffield so they will be my first port of call. Shoes will be replaced as a set having covered 53,000 miles and now contaminated with brake fluid.

Offside rear turned over to show the side facing the backing plate (inboard)  The compensator is here seen bottom left and attaches to the leading shoe.

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