IE A004TWO TEST REPORTS · JANUARY — APRIL 2013
GAZ-52 and D-245 engines: compression increased on both machines without teardown
Compression rose on both the gasoline and the diesel engine, cylinder-to-cylinder spread narrowed. 2–13 % — compression by cylinder of the petrol GAZ-52, 7.1–9.6 → 8.5–9.8 kgf/cm² (single maximum 32 %); 2–6 % — compression by cylinder of the D-245 diesel, 20.8–24.8 → 21.5–26.1 kgf/cm² (2013).
signed and stamped by the plant
What was repeated on both machines
| MACHINE AND ENGINE | HOURS AT START | TREATMENT CYCLE | WHAT WAS MEASURED |
|---|---|---|---|
| LAZ 4081 loader, inv. No. 54771<br/>GAZ-52 engine, petrol, 6 cylinders | 7381.5 h | 67 h of operation<br/>23.01 — 11.04.2013 | Compression by cylinder, spread between cylinders |
| ZIL-5301 truck, reg. No. AKh 0613 VE<br/>D-245 engine, diesel, 4 cylinders | 59 452 km | 1335 km of mileage<br/>27.01 — 11.04.2013 | Compression by cylinder |
Compression by cylinder — both machines, before treatment and after the full cycle
| MACHINE, ENGINE | CYLINDER | BEFORE, kgf/cm² | AFTER, kgf/cm² | CHANGE, kgf/cm² |
|---|---|---|---|---|
| LAZ 4081 · GAZ-52 | Cylinder 1 | 9.1 | 9.7 | +0.6 |
| LAZ 4081 · GAZ-52 | Cylinder 2 | 7.1 | 9.4 | +2.3 |
| LAZ 4081 · GAZ-52 | Cylinder 3 | 8.2 | 9.3 | +1.1 |
| LAZ 4081 · GAZ-52 | Cylinder 4 | 8.1 | 8.5 | +0.4 |
| LAZ 4081 · GAZ-52 | Cylinder 5 | 8.8 | 8.6 | −0.2 |
| LAZ 4081 · GAZ-52 | Cylinder 6 | 9.6 | 9.8 | +0.2 |
| LAZ 4081 · GAZ-52 | Spread between cylinders | 2.5 | 1.3 | −1.2 |
| ZIL-5301 · D-245 | Cylinder 2 | 24.6 | 26.1 | +1.5 |
| ZIL-5301 · D-245 | Cylinder 3 | 24.8 | 25.4 | +0.6 |
| ZIL-5301 · D-245 | Cylinder 4 | 20.8 | 21.5 | +0.7 |
Measurements taken with MOTOMETER and ZECA 363 compression testers on diagram forms. According to the conclusion of the ZIL-5301 report, compression rose by 0.6 to 2.4 kgf/cm² across the cylinders.
Conclusions of the reports
Current equivalent
- Revitalizant gel for diesel enginesDiesel engines
- 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 relate to the GAZ-52 petrol engine and the D-245 diesel under the operating conditions of the pilot plant of SE UkrNTC “Energostal”; on other equipment and in other duty cycles the figures may differ.