We have started ticking off another job on our "to do" list. This time on my MH 55 Riceland Diesel.
Having stood and moved only occasionally in the few years since I imported it, last year it suddenly decided to leak oil from the back axle through the brake casing drain hole in quite copious quantities.
The brake housing is most inaccessible anyway under the footplates and between the wheel and the transmission housing. The brake housing outer plate came off quite easily and it a feature of GOOD design along with it come the brake shoes. This exposes the big cast brake drum within which they sit. It is on the splines of a rugged shaft coming through from the transmission. Remove a circlip which retains it and it comes off easily. Then one can see the offending seal which has failed but one cannot get it out at this stage. Instead one has to remove the very substantial sort of trumpet housing bolted to the side of the transmission
This housing is boldly fluted and if I recall correctly is mounted on 8 sturdy studs with nuts. It is easy to get at 7 of the nuts but the one located at about 10 to the hour is in a foul place. Not possible to get a spanner on it and not possible to get a normal socket on it and turn it. As luck would have it my young mechanic had some long sockets with him which one could just get a socket bar on to and turn a few degrees at a time. A slow but at least positive job and we won through in the end. Once this housing was off then on to the bench, remove another circlip at the rear, out comes the sturdy shaft and then one can prise out the seal.
I suspect that MH had a specially configured spanner for the job. Of course it would be easy but a very time consuming and awkward job to get at it from above if one removed the footplate.
The good news today is that my local bearing man can get a new seal to fit and deliver to my door in just two days.
Interestingly the old seal was made in Mexico. Something rings a bell with me that MH did have some manufacturing done down there. Would Mr Trump now allow me to import one via the US through the new wall??!!
John