Tag Archives: brake drum

17/5/2026

The hex bar for the new brake adjuster arrived at the start of the week.  First job was to finish cleaning and paint the outside of the N/S front brake servo.   Whilst this was curing, I prepared the brake shoes for the N/S/F, filled the grease retaining bushes with copper grease and hung them on their pins, ready for the return spring to be installed  I noted that the back plate seemed closer to the brake shoes, compared with the other side, so some adjustment may be necessary.  After fitting the spring and aligning the N/S/F brake shoes, I set about cleaning the loose rust and dust from the both front brake drums and applying a couple of coats of warm Vactan to the rusty areas, ready for refitting.  Once this was dry, atrial fitting of the O/S front brake drum revealed it was too tight on the shoes, so I chamfered the edge and sanded the surface of the shoes and removed the ridge of rust around the edge of the brake drum.  I was then able to get it on to the stub axle, with assistance.  Fitting the outer bearing  brought the drum into the correct alignment and it was free to rotate.  I then fitted the retaining nut, locked it up to ensure the bearings were correctly centred, then backed it off until the drum was free to turn again.   The N/S/F brake drum went on a great deal more easily.  I adjusted it up tight and backed the nut off, same as the O/S.    I then took both outer bearings out and repacked the hubs with grease, in order to ensure the inner bearings were properly lubricated.  I spent some time attempting to discover the source of a slight binding of the offside drum,  but concluded it was likely to be a high spot on the brake shoes.  I then proceeded to remove the brake operating lever for the offside as it was clearly set in the wrong position and fouling the steering linkage.   I measured the height of the N/S lever and set the O/S lever to be as close to that as possible.  Next, I installed the brake servo for the O/S, which was a bit fiddly; the rear right-hand corner nut needs to be fitted first due to clearance issues.

Next I turned my attention to the nearside brake servo, removing the end cap and addressing the broken screw by welding a nut on the end.  Despite several attempts, the weld failed, so I replaced the end cap and drilled out the offending screw then retapped the hole.  The final job of the week was to complete reassembly of the N/S/F brake servo, including lubricating the piston, greasing and straightening the operating rod and fitting a new gaiter.  It is now ready to be installed.

8/9/2018

Assembled dust shield to nearside rear axle.  Cleaned out seal lands and bellows seals. Fitted new oil seal felt both sides then refitted bellows seals with clean oil to  mating surfaces.  Resurfaced brake linings (full ppe and breathing mask) to remove ridges that will otherwise mess up adjustment.  Cleaned brake shoe pivot pins ready to fit shoes.  Examined drums for wear and decided that apart from a score on inside edge on one, they will live.

8/6/2018

(3/6/2018)

This weeks’s work:

Started by cleaning the threads on the shock absorber drop link pins.  Reduced the height of the new nuts so that split pins can be fitted.  Sprayed Vactan on rear axle and chassis in axle area around axle and spring mounts.  The following day I prepped and spayed Vactan on rear brake drums.  Completed spraying Vactan on chassis backwards from the rear axle so this is now complete and ready for red oxide primer.

Following day: Applied red oxide by spray to the chassis members from the forward rear spring mounts to the back of the bus, including the rear axle and the brake mounts.

Sprayed Hammerite smooth silver onto the rear axle and rear third of the chassis today.  Awkward to get into some places but access may improve when I start to strip the body.  Second coat, probably hammered finish, tomorrow.

Second coat of Hammerite applied by spray today.  Started machining the shock absorber link pins to remove corrosion damage.

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20180607_121625 shock absorber bracket

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and bump stop mount on top of the axle.  Final job was finishing the machining of the shock absorber link pins.