Renova company performs general and partial engine repairs

Engine repairs

  • Zetor UŘ I UŘ III and all their modifications, including construction machinery
  • DIESEL MARTIN UŘ II, UŘ IV and all their modifications, including construction machinery
  • DAEWOO-AVIA
  •  MAN, IVECO, SCANIA, VOLVO, KUBOTA, HATZ, DEUTZ, CASE, FIAT, MITSUBISHI, KIA
  • YANMAR, LIEBHERR, MERCEDES, VALMET, VALTRA, DAF, BELAZ, CUMINS, BRIGGS & STRATTON
  • LIAZ + all the modifications
  • IFA 512, 514 + all the modifications
  • MAČKAČ D50, D242, PERKINS-BALCANAR, LEYLAND, MULTIKAR, URSUS, GLIVICE, KIROVEC
  • BĚLORUS D 65, D-245, D-260
  • ZETOR 15, ZETOR 25, Zetor Super 50, Slavia a Svoboda
  • Engines for all types of forklift trucks

For selected engine types repair can be made based on agreement by replacement, this is true especially true for engines of ZETOR UŘ I, UŘ II, UŘ III, (only by agreement), AVIA 30 and 31, PERKINS-BALKAN CAR.

Based on agreement partial repair and overhaul can be done while you wait.
The possibility of rebuilding engines 6701 to 6901, 7001 to 7201, 7201 to 7701, 8401 to 8002 TURBO, 8701 to 8602 TURBO
We repair older types of engines ZETOR 25, ZETOR SUPER 50, half engines Š.30 RS 09.

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Repair of engine cylinder heads

RENOVA MALEC-KADLEC, s.r.o. is focused on overhauls and partial repairs of diesel engines' cylinder heads. Heads are heated and pressured in operating temperature 85 °C, their surface gets grinded, injector chambers and valve guides get changed. We repair cracked heads for veterans Zetor 15, Zetor 25, Zetor Super 50, Škoda 30, and other brands by arrangement.

For veteran heads we weld valves if needed.

Repair of cylinder heads of foreign and domestic engines:

  • pressurization in a hot bath - warming-up of the head to operating temperature 85°C
  • production and replacement of the valve seats made from original materials, replacement of valves and valve guides
  • valve grinding
  • delivery of new valves and other parts of the head
  • replacement of injector chambers for all types of engine heads (domestic and foreign)
  • precise positioning of the valves using Sunnen machine
  • for veteran heads we weld valves if needed
  • overhaul of heads for ZETOR 25, ZETOR 15, ZETOR SUPER 50, ŠKODA 30, SVOBODA 12, SVOBODA 15

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Engine block repairs

Engine block repairs are done on the main bearing, repaired are cracks in the walls, between the cylinders and in the punched holes, blocks are grinded, upper parts are adjusted and other operations are done by agreement with the customer.

  • crack repairs on engine block walls
  • repairs of punched holes
  • repairs of cracked blocks between cylinders
  • adjustment of blocks including sinking for head overlap
  • welding and machining of engine block axials
  • repair of the main embedding for crankshaft mechanism
  • repair of cylinders embedding
  • repair of cylinder liners' sealing surfaces for "O" rings
  • repair of camshaft embedding
  • boring, grinding - block and cylinder honing using grinding pistons
  • delivery of dry liners and their positioning in the block in case of unavailability of grinding piston

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