FIELD CASE STUDY|ROAD TRANSPORT|TRUCK · ENGINE
REPORT UNDER CONTRACT No. 02/XADO OF 19.06.2001
ZIL-MMZ-45021 tipper: compression up in every cylinder, no teardown
PRODUCTXADO technologytreatment of the engine and cylinders, gearbox and rear axle final drive — without dismantling the units
TEST OBJECTZIL-MMZ-45021 tipper truckengine No. 080403 · chassis No. 2456730 · plate A953 VS
DOCUMENT TYPEReport — annex No. 4
to contract No. 02/XADO
to contract No. 02/XADO
Key results
↑25-46%
compression across the cylinders, 3.0-5.0 → 4.0-7.0 kgf/cm²
↑2min
running time on 1 l of petrol at idle, 16 → 18 min
| EQUIPMENT | CONDITION AT START OF TESTING | WHAT WAS MEASURED |
|---|---|---|
| ZIL-MMZ-45021 tipper truck,<br/>engine No. 080403 | built 1986, 15 years in service by the time of treatment; compression 4.8-5.0 kgf/cm², in cylinder 7 3.0 kgf/cm² | Compression across 8 cylinders; engine running time on 1 l of petrol at idle |
Compression by cylinder, engine No. 080403
| CYLINDER | BEFORE TREATMENT, KG/CM² | AFTER TREATMENT, KG/CM² | CHANGE |
|---|---|---|---|
| 1st | 4.9 | 6.5 | +33 % |
| 2nd | 4.9 | 7.0 | +43 % |
| 3rd | 4.9 | 7.0 | +43 % |
| 4th | 5.0 | 6.5 | +30 % |
| 5th | 4.8 | 6.0 | +25 % |
| 6th | 4.8 | 7.0 | +46 % |
| 7th | 3.0 | 4.0 | +33 % |
| 8th | 4.8 | 6.5 | +35 % |
Each cylinder was measured before treatment and after 2736 km of running; the engine was not dismantled and the truck stayed in service.
Fuel consumption at idle
| PARAMETER | BEFORE TREATMENT | AFTER TREATMENT |
|---|---|---|
| Engine running time on 1 l of petrol | 16 min | 18 min |
Measured at idle as the time taken to consume one litre of petrol.
Commission conclusion
The commission of Imstalkon JSC and GAYER LLP recorded in the report: «Thus, the engine operating parameters have been improved, as can be seen from the increase in compression in the cylinders». The increase was recorded in all eight cylinders: in seven of them from 4.8-5.0 to 6.0-7.0 kgf/cm², meaning that the sealing of the cylinder-piston group was restored throughout an engine that had by then been in service for 15 years. The units were not dismantled, the truck stayed in operation and covered 2736 km in 28 days. The report separately notes: «The insignificant change in compression in cylinder 7 possibly indicates mechanical damage in that cylinder. The engine should be dismantled in order to establish the true cause of this fact». Even in that cylinder compression rose from 3.0 to 4.0 kgf/cm².
The results relate to the ZIL-MMZ-45021 tipper truck with a petrol engine and to the stated measurement conditions; figures may differ on other equipment. The report was drawn up as an annex to contract No. 02/XADO and signed by both parties — the contractor GAYER LLP and the customer. The original report with signatures and stamps is published in full and available for download.
Current equivalent
- Revitalizant gel for cylinder restorationEngine cylinders, deep wear
- Revitalizant gel for petrol enginesPetrol engines
How such units are treated: