Performing maintenance of complete drive systems of rail buses of the SA95, SA133, SA134, SA137 and SA139 series in accordance with the Maintenance System Documentation (DSU) and Technical and Operational Documentation (DTR).

Maintenance of the N-Pack drive systems of SA95 series vehicles (type 36WEhd) during P2 maintenance (including their multiples x3, x6 and x12) and after reaching mileage of 1000 mtg, 2000 mtg, 6000 mtg and 8000 mtg.

PESAPACK SA133 series (type 218Mc) maintenance after reaching mileage of 800 mtg (also their multiples x2 and x5), 8000 mtg and 32000 mtg.

Maintenance of SA134 series (type 218Md-M) powertrains during P2.1 level two inspections (including their multiples x2).

PowerPack maintenance of SA137 series vehicles (type 220M during P2 inspections (also their multiples x6) and after reaching mileage of 1000 mtg (also multiples x2), 3500 mtg and 7000 mtg.

Maintenance of SA139 series drive units (DSU type 223M SA139 series for numbers -001-006) for P2.1 level two inspections (also their multiples x2) and P2.2.

Technical maintenance of SA139 series drive units (DSU type 223M SA139 series for numbers – 010, 022-026) during P2 inspections (also their multiples x4) and after reaching 4000 mtg.

Maintenance of SA139 series drive units (DSU type LINK 600-20 SA139 series for numbers – 031,032) marked as W14, W1, W2, W3, W4 and W5.