Description

FIAT Kobelco CK2500-II, CKE2500-II Service Manual – 614 Pages of Factory Specs

You’ve got a FIAT Kobelco CK2500-II, CKE2500-II Service Manual sitting in front of you, and I’m not going to waste your time with fluff. If you’re tearing into a crawler crane and you don’t have the factory torque values for the boom hoist drum lock or the exact hydraulic circuit oil flow from No.1 and No.2 pumps, you’re working blind. I’ve seen too many guys snap cap screws because they trusted a third-party spec sheet. This 614-page manual comes straight from Kobelco’s engineering floor, not some aftermarket hack who thinks “tight enough” is a torque value.

Let’s get into what matters: the stuff that keeps you from trashing a $50,000 propel motor or dropping a load because the drum lock adjustment was wrong.

Specifications: CK2500-II and CKE2500-II Dimensions and Weights

Section 1 breaks down both models. You get outside dimensions, performance specs for the luffing jib, and the stability calculations for swinging and traveling. Need the weight of the counterweight for that base machine? It’s all laid out in 1.1.4. If you’re rigging a transport or checking load charts, this section keeps you legal. Page 1-4 shows the overall dimensions in millimeters and inches—conversion tables are in Chapter 3 if you need them.

Maintenance Standards and Test Procedures

Chapter 2 isn’t a suggestion. It’s the factory checklist for pin wear, bushing clearance, spring tension, and sheave condition. The propel device maintenance standard on page 2-10 tells you exactly when to replace a worn sprocket or adjust track tension. Then comes the performance standard and test procedure for operating speed and pressure measurement points. You want to know if your swing ring is within spec? The slewing ring test procedure on page 2-22 tells you the dial indicator setup and the acceptable runout. Skip this and you’ll be chasing a drift that costs four hours of diagnostic time.

Torque Specs and Hydraulic Fittings: Get It Right

Chapter 3 is where most mistakes happen. General Work Standard covers tightening torque of capscrews and nuts—metric coarse, metric fine, UNC, UNF, and the big one: hydraulic fittings. I don’t care if you’ve been wrenching for 30 years; you still need the torque for a 3/4-10 UNC cap screw in a high-stress joint. Section 3.1.5 gives you the torque values for JIC, ORFS, and Bite fittings. Also includes O-ring and back-up ring dimensions, unit conversion tables, and gradient conversion. This chapter saves your threads and your back.

Power Train and Pump Drive Assembly: Removal to Re-installation

Chapter 4 covers the engine removal, repair, and re-installation, plus the pump drive assembly (power divider). The step-by-step disassembly sequence for the power divider is in 4.3.3, and the check and repair procedures in 4.3.4 tell you which gear clearances to measure and where to look for wear patterns. Re-installation torque for the pump drive mounting bolts? In 4.3.6. If you’ve ever had a pump drive misalignment eat a gear set in 50 hours, you know why this matters.

Hydraulic System Oil Flow: Understanding the Circuits

Chapter 5 is the heart of the machine. Location of main hydraulic components, component specs, and then the oil flow from No.1 and No.2 pumps, No.3 and No.4 pumps, No.5 control pump, and No.6 auxiliary actuator circuit. You get a full hydraulic circuit diagram in 5.2.1. When a relief valve sticks or a pilot line gets plugged, tracing the circuit in this manual saves you from pulling apart the wrong section. Section 5.4 covers valve removal and adjustment—don’t even think about adjusting a main relief without the factory pressure spec from this chapter.

Hoist System, Boom Hoist, Swing, and Propel

Chapters 6 through 9 cover every driveline system. Hoist system includes the drum lock adjustment (6.3.2), winch assembly with and without free fall, brake pedal adjustment, and bleeding air from the brake circuit. Boom hoist system (Chapter 7) shows the hydraulic schematic for raising, holding, and lowering the boom, plus the boom drum lock adjustment. Swing system (Chapter 8) details the swing reduction unit and swing bearing. Propel system (Chapter 9) gives you the propel reduction unit and motor disassembly—plus the adjustment specs for track tension. Each chapter has a hydraulic schematic that matches the machine serial number range. Cross-reference with Chapter 10 for the electrical wiring schematic and connector list if you have an electrical gremlin.

FAQ

Does this manual include wiring diagrams?

Yes, Chapter 10 covers electrical wiring schematics, connector list, and part locations for cab, deck, and floor plate.

What about the torque specs for the boom hoist drum lock bolts?

They are in Section 7.3.2 under adjustment procedures, but for the fastener torque values themselves you need Section 3.1 (Metric and UNC coarse/fine). The drum lock adjustment instructions specify a torque of 72 ft-lb for the locking bolt—but verify the exact value in the manual because machine serial number range changes the spec. Don’t use a generic chart; these crawler cranes use different bolt grades than a pickup truck.

Related Manuals

• Kobelco CK2500-II Crawler Crane Specifications
• FIAT Kobelco CK2500-II Operators Manual – 461-Page Factory Specs
• FIAT Kobelco CK2500-II, CKE2500-II Workshop Manual – Factory Specs

This manual comes direct from the factory archives, not a scanned copy with missing pages. Every torque value, clearance, and pressure spec matches what Kobelco released. Stop chasing aftermarket data that doesn’t match your serial range. Manual Transmission” title=”Manual Transmission”>External reference: Manual Transmission is one thing, but these hydraulic drive systems need factory data. Manual Transmission” title=”Manual Transmission”>External reference: Manual Transmission isn’t relevant here—stick with the 614-page factory manual. Access the Factory Manual now and get back to wrenching with confidence.