CASE SERIES|ROAD TRANSPORT · OIL & GAS|KAMAZ ENGINES
TECHNICAL REPORTS ON THE SMU-46 FLEET · OCTOBER 2001
series of 2 acts
KamAZ engines: compression up, cylinders evened out
PRODUCTTreatment by XADO technologyperformed by OOO Al-XADO, Almetyevsk
TEST OBJECTEngines of KamAZ trucksplates V 841 OKh and V 814 EM · compression by cylinder, right bank
DOCUMENT TYPESMU-46 technical reports
with signatures and stamps
with signatures and stamps
What repeated on both trucks
compression evened out across the cylinders
↑9.1-20.6%
compression by cylinder on both trucks, 22.2-26.6 → 25.9-30.0
| VEHICLE | ODOMETER AT THE “BEFORE” READING | DISTANCE RUN BEFORE THE CHECK READING | WHAT WAS MEASURED |
|---|---|---|---|
| KamAZ, plate No. V 841 OKh | 37 951 km | 11 014 km | Compression by cylinder, oil pressure |
| KamAZ, plate No. V 814 EM | 49 134 km | 15 445 km | Compression by cylinder, oil pressure |
Compression by cylinder, right bank — both trucks side by side
| CYLINDER | V 841 OKh, BEFORE | V 841 OKh, AFTER | V 814 EM, BEFORE | V 814 EM, AFTER |
|---|---|---|---|---|
| 1st | 23.2 | 26.1 | 26.6 | 29.7 |
| 2nd | 22.5 | 26.6 | 25.7 | 30.0 |
| 3rd | 24.1 | 26.3 | 26.1 | 29.6 |
| 4th | 22.2 | 25.9 | 24.8 | 29.9 |
| Spread between cylinders | 1.9 | 0.7 | 1.8 | 0.4 |
The compression unit is not filled in on the report forms; the values are given as they stand in the documents. The rise occurs in all eight cylinders, with no drop in any of them.
Oil pressure in the lubrication system
| MODE | V 841 OKh, BEFORE | V 841 OKh, AFTER | V 814 EM, BEFORE | V 814 EM, AFTER |
|---|---|---|---|---|
| Idle | 1.6 | 2.0 | 1.9 | 2.4 |
| 2000 rpm | 3.7 | 3.9 | 3.8 | 4.7 |
Oil pressure in kgf/cm². At idle the “before” reading was taken at 45 °C, the “after” reading at 60 °C.
What the reports state
Both SMU-46 reports record one and the same result. For truck V 841 OKh: “Compression increased by 14 %, evened out across the cylinders”. For truck V 814 EM: “Compression increased by 15.5 %, evened out across the cylinders. Considerable drop in oil consumption. Noises in engine operation gone. The truck has become more responsive” — and this despite the fact that high oil consumption is recorded in the same report as the condition of the engine before the treatment. The rise was obtained in all eight cylinders of the right bank, and the most worn ones caught up the most: the spread between cylinders narrowed from 1.8-1.9 to 0.4-0.7. Compression cannot rise above the factory nominal, so bringing the cylinders to a single value is the most that can be achieved. The check readings were taken after 11 014 km and 15 445 km of the trucks’ regular service.
The results apply to the engines of the KamAZ trucks of the SMU-46 fleet at the stated mileages; on other equipment and under other operating conditions the figures may differ. The treatment was performed by OOO Al-XADO. The original reports are published in full and available for download.
Current equivalent
- Revitalizant gel for cylinder restorationEngine cylinders, deep wear
- Revitalizant gel for diesel enginesDiesel engines
How such units are treated: