Cat 815 versus816: soil and landfill equipment

815 soil compaction and 816 waste compaction need different equipment

The 815 works fill with tamping-foot wheels; the 816 is built for landfill duty. Their shared C7.1 engine name does not make the wheel packages interchangeable. Cat lists a denser tip arrangement for the soil machine, while the landfill model offers paddle, plus and combination tips.

Identify the fitted wheel group before comparing the machines' weights or estimating tip replacement work.

Material wrapped around an axle is a different inspection problem from soil packed between tamping feet. On a used 816, examine the waste-protection equipment and the space around the axles, as well as the visible tips. A straight blade for moving refuse also has a much larger screened face than the 815's soil blade.

Its rated volume describes the blade arrangement; it is not the quantity compacted on each pass.

Keep engine options and torque figures together

Cat publishes separate emissions arrangements for both models. The Tier 4 Final/Stage V installation has aftertreatment; the lower-emissions-tier equivalent uses another arrangement. Gross power, peak torque and torque rise must stay beside the option that produced them.

Taking the higher torque-rise percentage from one option and the peak torque from another creates a specification Cat did not publish.

For an imported machine, photograph the engine and emissions labels before ordering exhaust parts. The presence of the model number alone cannot establish whether a DEF system belongs on it. Also distinguish flywheel net output from gross power when comparing an older listing with the current engine schedule.

Component mass is not transport weight

The small “Weight” entry in the blade section belongs to the blade assembly. The wheel-group mass is another component value. Neither represents the complete 815 or 816.

Use the operating-weight row for the appropriate emissions version, then account for the wheel and blade equipment actually fitted. A weighbridge result is preferable when a transport plan depends on the machine's current condition and configuration.

The 815's planetary transmission has three forward and reverse ranges. The 816 uses a different speed schedule, so their shared steering-control name is not evidence of identical travel performance. During an inspection, demonstrate the ranges with the intended blade and wheel package in place.

Check the parking-brake control separately from the service-brake pedal.

Cat also distinguishes hydraulic reservoir volume from oil held in the complete implement and steering installation. A reservoir refill figure cannot be treated as the amount needed after lines and cylinders have been emptied. Keep those labels on the service order, especially when a machine has been dismantled for transport or repair.