Started the week by positioning the pedal rod temporarily, however the pin needed minor fettling, so had to come out again. This done and with the arrival of the thick washers (which then required machining) I was able to start refitting the brake rods. The pin on the sliding link to the rear brake is a spring anchor; luckily this one was not worn but does need the split pin hole drilling out, a perilous operation in a small item like this but achieved successfully at the expense of two expendable drill bits. It then became clear that with the operating cams set as they are currently, the brake rods to the rear axle were not long enough. So to fix this I began the tedious job of removing and resetting the cams, commencing with heating with oxyacetylene the large nut on the end of the O/S shaft . This seems to have loosened the split pin, but other matters have intervened so the job will not now continue until next week, when the first job will be to properly extract the split pin.
Tag Archives: brakes
8/2/2026
Off sick the previous ten days, but a good start to the week by finishing bolting in the main servo and screwing in the rear brake rod. Pipework was next next, tricky to fit. The connections on the pipe to the reservoir was fitted. After that, the handbrake bracket was reattached and the pedal rod screwed into the servo. The final job of the week was to fill the servo with vegetable oil, as recommended by Clayton, and replace the top cover. This completed the work for this week. I am waiting now for the washers to complete the reinstallation of the brake rods and adjustment of the rear brakes.
25/1/2026
Made a good start this week, preparing all the bolts for refitting the rear brake servo and positioning the servo with the chassis bracket loosely attached, ready for final installation. there was not room to get the nut and Thackeray washer on the forward mounting bracket securing bolt with the servo attached, so I had to prise it back a little to give me room to fasten the bracket to the chassis cross member. However, this took much longer to achieve than it sounds, due to having to do it from underneath the bus. This proved unsuccessful as it was then impossible to move the servo back into the correct position, so I had to release the bracket from the bulkhead in order to lever it forward to line up the hole for the servo bolt. I machined the fixing nut to size for the bracket’s lower mounting bolt but had to stop at that point due to feeling unwell. Illness then prevented further work this week.