IE B006REPORTS OF VEHICLE FLEET No. 13 · OCTOBER 2008 — FEBRUARY 2009
ZIL 130 and ZIL 131: compression evened out without engine teardown
Compression evened out across the cylinders of both engines, the weakest cylinders came up. 1.8 kgf/cm² — compression in the most worn cylinder of the ZIL 131, was 5.5 (2009).
for gasoline enginesfull cycle — 3 stages of dosing into the oil sump; XADO VitaFlush cleaner, VERYLUBE ANTIKOKS
ZIL 130 and ZIL 131gasoline eight-cylinder engines, cylinder-piston group
of the plant, 20.03.2009
Key result
| VEHICLE | MILEAGE AT START | MILEAGE OVER CYCLE | WHAT WAS MEASURED |
|---|---|---|---|
| ZIL 130, plate No. AE 9334 AA | 29 396 km | 5 668 km | Compression in all eight cylinders before and after treatment |
| ZIL 131, plate No. AE 0994 AT | 11 550 km | 10 450 km | Compression in all eight cylinders before and after treatment |
Compression by cylinder, kgf/cm² — both vehicles side by side
| CYLINDER | ZIL 130 BEFORE | ZIL 130 AFTER | ZIL 131 BEFORE | ZIL 131 AFTER |
|---|---|---|---|---|
| I | 8.0 | 7.7 | 7.3 | 7.5 |
| II | 7.5 | 8.1 | 5.5 | 7.3 |
| III | 6.8 | 7.0 | 7.3 | 7.7 |
| IV | 6.9 | 7.7 | 8.0 | 8.1 |
| V | 8.8 | 8.3 | 7.3 | 7.6 |
| VI | 8.3 | 8.3 | 7.4 | 7.6 |
| VII | 6.8 | 7.5 | 7.3 | 7.5 |
| VIII | 8.7 | 8.4 | 7.5 | 7.8 |
| Spread | 2.0 | 1.4 | 2.5 | 0.8 |
ZEGA 362 compression tester; spread is the difference between the highest and the lowest cylinder of the engine. The rise in compression is capped by the manufacturer's nominal value.
What changed on each vehicle
| VEHICLE | CYLINDER-TO-CYLINDER SPREAD | LARGEST GAIN IN A SINGLE CYLINDER | MILEAGE OVER CYCLE |
|---|---|---|---|
| ZIL 130 | 2.0 → 1.4 kgf/cm² | 0.8 kgf/cm² — cylinder IV (was 6.9) | 5 668 km |
| ZIL 131 | 2.5 → 0.8 kgf/cm² | 1.8 kgf/cm² — cylinder II (was 5.5) | 10 450 km |
On the ZIL 131 compression rose in all eight cylinders, on the ZIL 130 — in the four most worn ones: the coating builds up where the wear was.
Conclusions of the plant reports
Current equivalent
- Revitalizant gel for petrol enginesPetrol engines
- Revitalizant gel for cylinder restorationEngine cylinders, deep wear
How such units are treated:
About this result:
Limits of this report: The results refer to the gasoline engines of the ZIL 130 and ZIL 131 trucks of Vehicle Fleet No. 13 at OJSC ArcelorMittal Kryvyi Rih; on other equipment and under different operating conditions the figures may differ.