2132

Diesel-hydraulic shunter

Pictures

Croatian language - Hrvatski jezik

The C type frame-locomotives of the 732 series were manufactured by Gjuro Gjakovic Works, under the licence of Jenbacher Werke of Austria. This locomotive series was constructed upon the basis of the class 731 to increase traction effort and adhesion weight of the unit. The production started in 1969, and amounted 72 units for Croatian Railways, 25 units for Slovenian Railways and 25 units for industrial shunting. In 1977, additional ten units were ordered for Croatian Railways, featured with hydro-regulator Voith type 900/316 SRH.

This led to the total number of 72+25+10 = 107 units owned by Yugoslav railways, but it should be pointed out that the numeration of the units started with no. 101 and was continued until 208, making free space for the improvement and reconstruction of the 731 series into class 732-000.

Technical data of the shunter:

  Traction and auxiliary devices: 

  Overhauls:

The first unit assigned for collaudation was no. 732-111 of Railway Depot of Rijeka, which entered Zagreb Railway Works on 1971/01/22 and remained until the 4th of May. Already then some construction problems were detected. The regular repairs began in July 1972 with the unit 732-110 of Railway Depot of Vinkovci.

The following modifications have been undertaken for regular repairs since 1975: reconstruction of the crankshaft by the installation of counter-weights, performed by Jenbacher Werke; installation of new bearings manufactured by BHW—Braunschweig Works; building in of domestic alternator (a replacement for dynamo) »Iskra« AAT 1203 (84 V, 30 A); installation of rpm indicator of the diesel-motor »Teleoptik« 842-2-25; installation of electric motor for cab heater »Iskra« MKE 3412 (85 W, 75 V), installation of electric motor pump for fuel »Iskra« MKE 3943 (85 W, 72 V), building in of domestic electromagnet for shutting down the diesel-motor, and so on.

The reconstructed shunter subclass 2132 1

The locomotives of the new series 732-000 (HZ 2132 100) were derived by reconstruction of the locomotive class 731 to a greater power with a new diesel-motor and transmission. They were designed for light and heavy shunting.

Zagreb Railway Direction owned a number of diesel-hydraulic shunters of the 731 series, which were outdated and frequently failed. It was extremely difficult to maintain the parts which were no longer produced. By end of 1984 it was decided to overhaul five units of the 731 series. The power of the units was increased to 441 kW by the installation of new diesel-motor and new turbo-reversible hydraulic transmission, and all this inaugurated a new class: 732-000.

Technical data of the shunter: 

  Traction and auxiliary devices:

  Main facts about the overhaul:

The first unit destined for the overhaul was no. 731-111, which was hauled to Zagreb Railway Workshop in December 1984, and the unit no. 731-121. Apart from the installation of new diesel-motors, a modern universal hydraulic transmission of the type Voith L3r4-U2 was built in, together with the reconstruction of the motor case. This new hydraulic transmission enabled changing of the driving direction when the unit was in motion, and consequently the inter-transmission was no longer required. The existing diesel-motor JW 400 was replaced by a modern 4-tact diesel motor Pielstick 6 PA 4V—185 VGG, which was manufactured by Uljanik Works in Pula (Croatia) under the licence of S.E.M.T. Pielstick Co. of France. The unit 731-121 adopted 12-cylinder 4-tact diesel-motor JW C 240 S donated by Jenbacher Werke for a comparison.

After the test drive had been successfully performed on 1986/12/09 on Zagreb Marchalling Yard, the first renovated units 732-001 and 732-002 were admitted into traffic.

It should be noticed that with the establishing of Croatian Railways and introducing of new numeration, these five units adopted the following numbers: 2132-101, 102, 103, 104 and 105, thus constituting the more recent subclass 100 of the series 2132 (former 732). This overhaul was continued in 1994 with 2131-009 (ex 731-119), converted into 2132-106; and with 2131-006 (ex 731-103), converted into 2132-107.

 The modernised shunter subclass 2132 2

After 20 years of utilisation of the 732 (HZ 2132) class diesel-hydraulic shunters, it was decided to introduce modernisation in order to meet modern technical requirements. The modernisation was initiated in 1988 with the unit no. 732-149 (now 2132-201).

  Items fit for improvement

The original primary drive was carried out using elastic coupling Giunti and primary cardan joint Giunti. The drive of the cooler ventilator was performed through the cardan joint, so the rotation number directly depended on the rotation of the diesel engine. The axle drive was of the Maybach or Voith type. The operation was enabled using pneumatic equipment, and change of drive direction was possible only at locomotive halt.

Technical data of the shunter: 

  Traction and auxiliary devices:

  Essentials about the overhaul:

The following fundamental actions were performed: the installation of new 4-tact diesel-motors Pielstick 6PA4 185VG and Jenbach JW 240 D; building in of new turbo-reversible hydraulic transmission of the type Voith L3r4. After the installation of the turbo-reversible transmission, hydraulic train braking was enabled, and changing of drive direction was possible without stopping the locomotive. Consequently, the inter-transmission was no longer necessary, so it was omitted.

The primary drive was performed through high elastic connection coupling-cardan shaft manufactured by Küsel. Hydraulic ventilator drive produced by Volvo was installed, facilitating maximal rotation of the ventilator, independent of diesel-motor rotation. The axle drive remained unchanged. Due to hydrodynamic braking effect of the hydraulic transmission, there were built in auxiliary cardan shafts of the type Voith Transmit, with permanent changeable moment and tilsit telescopic part. The operation was enabled using pneumatic equipment of Knorr modular construction. Entirely new electric equipment was installed, together with the complete protection of locomotive outfits, operating automatically without supervision of the driver. The capacity of front water-cooler was increased too.

The first five modernised units were hauled to Rijeka, where the modernisation was acknowledged and the units proved to be more reliable; therefore the period between regular repairs was extended by 250%. Since excellent results were experienced, the modernisation has been continued since 1992, beginning with the nos. 2132-039 (former 732-138), converted into 2132-202; 2132-037 (former 732-126), converted into 2132-203; 2132-020 (former 732-170), converted into 2132-204; and 2132-002 (former 732-103), converted into 2132-205.

The reconstruction was conceived to facilitate all the improvements simultaneously on the 2131 and 2132 series, which finally leads to the unification of diesel shunters at Croatian Railways.