Copyright © 2012 by
"Neil Warbrick"
All Rights reserved
"Neil Warbrick"
All Rights reserved
ENTINEL
TEAM
AGGON
No. 5676
Built 1924
S
S
W
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Last updated.20/05/12
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Projects...
Wheel bearings
Winter & Spring 2004-5
Each front wheel rotates on two half length bearings. The front fireman’s side bearings had been overheating almost every time the waggon was out. They were stripped and inspected. Damage was found to one of the bearings and thrust plates; I suspect from dirt coming in with the grease, however no damage was found on the axle pin.
Two new top hat bearings were drawn up, and made by Abercorn Engineering, not from bronze as originally, but from nylon. Having used this particular material for bearings and other wear components extensively at my work, I was confident that it would be at the very least as good, if not better, than the bronze equivalent. The thrust plates were skimmed and shims made to give a 1/32” end running clearance between the bearing flanges and the thrust plates, allowing the axle nuts to be flogged up hard.
Use of nylon for the bearings has been proved to be justified. This axle now runs cooler than the driver’s side. It is intended to replace the driver’s side bearing when time is available.
The rear axle bearings are a running fit on the axle pins and in the rear drum. When the hub caps were removed to loosen the drums, the retaining nuts were found to be loose. After closer investigation, it was found that the length of the drum was longer than the available length of pin, between the inside thrust plate and the nut. This gave a false sense of tightening up the nut, actually jamming the drum between the nut and thrust face. Shims were made to give an end running clearance, allowing the nuts to be flogged up hard. The rear bearings, pins and drums were both found to be in good condition.
Rear wheel bearing:
Winter & Spring 2004-5
Each front wheel rotates on two half length bearings. The front fireman’s side bearings had been overheating almost every time the waggon was out. They were stripped and inspected. Damage was found to one of the bearings and thrust plates; I suspect from dirt coming in with the grease, however no damage was found on the axle pin.
Two new top hat bearings were drawn up, and made by Abercorn Engineering, not from bronze as originally, but from nylon. Having used this particular material for bearings and other wear components extensively at my work, I was confident that it would be at the very least as good, if not better, than the bronze equivalent. The thrust plates were skimmed and shims made to give a 1/32” end running clearance between the bearing flanges and the thrust plates, allowing the axle nuts to be flogged up hard.
Use of nylon for the bearings has been proved to be justified. This axle now runs cooler than the driver’s side. It is intended to replace the driver’s side bearing when time is available.
The rear axle bearings are a running fit on the axle pins and in the rear drum. When the hub caps were removed to loosen the drums, the retaining nuts were found to be loose. After closer investigation, it was found that the length of the drum was longer than the available length of pin, between the inside thrust plate and the nut. This gave a false sense of tightening up the nut, actually jamming the drum between the nut and thrust face. Shims were made to give an end running clearance, allowing the nuts to be flogged up hard. The rear bearings, pins and drums were both found to be in good condition.
Rear wheel bearing:
