Description

Skoda SK200-6, SK230-6, SK320-6 Technical Manual

If you’re working on a Skoda SK200-6, SK230-6, or SK320-6 excavator and need to tear into the hydraulic pump, this 17-page Technical Manual is what you want on your bench. I’ve lost count of how many times I’ve seen a technician hook up a gauge to the wrong port because they trusted a third-party diagram. That mistake costs hours and sometimes a pump. This factory document gives you the actual port assignments and pump specs—no generic summaries.

Hydraulic Pump Port Identification

Page 1 of the manual shows the main pump appearance with every port labeled: A1 and A2 are delivery ports (SAE 6000 3/4), B1 is suction (SAE 2500 2 1/2), Dr is drain (PF 3/4 plugged), and a1 through a9 are gauge ports (PF 1/4 plugged). You also get servo-assist ports PSV1, PSV2, PN1, PN2, plus pressure sensor ports PH1 and PH2. The gear pump has its own delivery, suction, and drain ports. If you need to tee into the system for diagnostics, this table tells you exactly which fitting to use. No fishing around for adapters.

SK200-6, SK230-6, SK320-6: Key Pump Specs

Page 2 lays out the pump models and numbers for each machine. The main pump is a K3V112DT-1RAP with three suffixes—-9TIL for SK200-6, -9TOL for SK230-6, and -9TOS for SK320-6. Displacement ranges from 105×2 cc/rev (with 10 cc/rev gear pump) up to 115×2 cc/rev. Rated pressure for all main pumps is 34.3 MPa (350 kgf/cm²), but the ATT boost pressure is 37.8 MPa for one model. Gear pump rated pressure is 4.9 MPa. Max input power varies: 106.6 kW for SK200-6, 129 kW for SK230-6, 177 kW for SK320-6. These numbers matter when you’re setting relief valves or selecting replacement parts. A mismatched pump will either starve the system or blow seals.

What Makes This Factory Manual Different?

Aftermarket manuals combine specs from multiple models into one chart and hope you don’t notice. This Skoda factory document keeps each model separate. The control characteristic is listed as Nega-Con / total power shift control. The weight of the main pump is 125 kg for SK200-6 and 126 kg for SK230-6. The gear pump weighs 1.6 kg. That level of detail comes from the OEM—not from someone photocopying a third edition. If you’ve ever torqued a bolt to the wrong spec because a reprint manual left out model-specific notes, you know the difference. This is the original.

Read the Exploded View Before You Crack the Case

Page 3 includes a parts breakdown of the main pump. You get exploded views with callouts—shaft (front and rear), spline joint, roller bearings, cylinder block, pistons, shoes, retainer, swashplate, tilting bushing, valve plate, and more. Each part has a code and quantity. When you’re rebuilding, you need that part number to order the correct seal kit or bearing. The manual also shows the gear pump structure. Don’t guess which shim goes where. Use the factory diagram. If you need to cross-reference other Skoda models, check the Skoda Octavia 2001 Technical Manual – Factory Preview”>Skoda Octavia 2001 Technical Manual – Factory Preview for passenger car comparisons, or the Skoda Octavia Technical Manual – 46 Pages, Haldex Coupling & 4×4 Systems”>Skoda Octavia Technical Manual – 46 Pages, Haldex Coupling & 4×4 Systems for drivetrain details. For engine data, see the Skoda 1.9 SDI & 1.9 TDI Technical Manual – Factory Engine Data”>Skoda 1.9 SDI & 1.9 TDI Technical Manual – Factory Engine Data.

Who Needs This Manual?

If you own or maintain a Skoda SK200-6, SK230-6, or SK320-6 excavator, this manual is for you. Home garage guys rebuilding a hydraulic pump, fleet mechanics troubleshooting low flow, or shop owners training technicians—all get value from the OEM port diagrams and pump specifications. This is not a full service manual. It’s a 17-page deep dive into the hydraulic pump and gear pump. You won’t find engine overhaul procedures here. But for pump work, it’s the only source you should trust. If you’re new to hydraulic systems, read the Automotive Industry Overview”>Automotive Industry Overview for background and check the Manual Transmission”>Manual Transmission page for comparison, but come back to this for the specific pump data.

Does this manual cover the entire machine?

No, it covers only the hydraulic pump and gear pump components.

Why should I buy this if I already have a generic manual?

Generic manuals merge specs from different models into one chart. This factory manual lists exact port assignments (like a9 for gauge, PSV1 for servo-assist) and pump variants for each model. On page 1, you see the SAE port sizes. On page 2, the table shows rated pressure 34.3 MPa for main pump. If you use a generic spec and your pump is a K3V112DT-1RAP-9TIL for SK200-6, you might get the wrong displacement, leading to incorrect flow calculations and potential cavitation. Factory data eliminates guesswork.

Access the Factory Manual and keep it on your tablet or print the port diagram to tape on the workbench. When you’re bleeding a pump or replacing a seal, you’ll thank yourself for having the original print in front of you.