Locate the drive axle group before naming an auxiliary axle. On the inspected Bridgemaster mixers, pusher describes the auxiliary axle ahead of that group; tag describes the one behind it. The names refer to position, not simply whether a wheel is raised.
Read a side photograph in this order
- Find the rear drive group. Use a complete side view so the wheels under the mixer are not hidden by the cab or chute.
- Look immediately ahead of it. This is the pusher position in the inspected 71075 and71081 configurations.
- Look behind it. The tag equipment extends the rear arrangement and has its own lowered position.
A raised wheel can be in either auxiliary position. Naming it from its position avoids confusing pusher movement with tag movement when comparing seller photographs.
| Model function | What it establishes | What it does not establish |
|---|---|---|
| Pusher lifts and steers | Its own position and wheel angle can change | An equally sharp front-axle steering angle |
| Tag lowers | The rear configuration can change | A miniature carrying capacity |
| Chute extends | A separate rear working envelope | A length already covered by the axle measurement |
The Western Star 4900 and Kenworth T880 are the documented examples here. Their front steering remains restricted. A photograph emphasizing a sharply steered pusher wheel can therefore overstate the turning impression of the complete truck.