ChME-3 locomotive HPFP: delivery of worn elements restored without teardown

Tbilisi Locomotive Depot · depot commission: shop superintendent T. Zaridze, test engineer S. Ksovreli; technical consultant of the XADO concern representative office in Georgia S. Kakauridze · approved by depot director G. Badalashvili

Tbilisi, Georgia · contract work 08.01–07.07.2004 · report dated 07.07.2004

PRODUCTXADO gel for fuel injection equipment9 blisters, added to the fuel tank in a single step

TREATED UNITHPFP of ChME-3 locomotive No. 3329plunger pairs I–VI, delivery measured on the depot shop test bench

DOCUMENT TYPEDepot technical report
commission signatures, seal

Key result

↑58-131%

delivery of worn HPFP elements, 60-118 → 95-232 ml

EQUIPMENT	CONDITION AT START OF WORK	WHAT WAS MEASURED
ChME-3 locomotive No. 3329, shunting	HPFP in service, worn: element delivery 60-130 ml, spread between elements more than twofold	Delivery of plunger pairs I–VI on the depot shop test bench

HPFP plunger pair delivery before and after treatment

PLUNGER PAIR	DELIVERY BEFORE, ml	DELIVERY AFTER, ml	CHANGE
I	130	137	+5.3 %
II	114	232	+103 %
III	60	95	+58.3 %
IV	118	199	+68.6 %
VI	90	208	+131 %

Depot shop test bench: 100 rpm, cycle 2 min, conditions before and after identical. The smallest gain is on element I, the least worn one: its delivery before treatment was the highest.

Depot decision

The commission of the Tbilisi Locomotive Depot recorded: after the XADO gel was added to the fuel tank, ChME-3 locomotive No. 3329 ran 50 h — half of what the technology specifies — and the delivery of the HPFP plunger pairs, measured on the shop test bench under identical conditions, increased: 60-130 → 95-232 ml. The pump was neither removed nor disassembled, and the precision pairs were not replaced: delivery was restored on the running locomotive, in regular service. Verbatim conclusion of the report: «In view of the positive result, it was decided that restorative repair of high-pressure fuel pumps on other locomotives is advisable».

The results refer to the high-pressure fuel pump of shunting locomotive ChME-3 No. 3329 of the Tbilisi Locomotive Depot; on other equipment and under other operating modes the figures may differ. The original technical report dated 07.07.2004, with signatures and seal, is published in full and available for download.

Current equivalent

Revitalizant gel for hydraulic systems →

Hydraulic systems of industrial and special equipment, pumps, motors and valves; gearboxes with oil filtration.

How such units are treated: Pump

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