Description

Case CX135SR, CX75SR, CX80 2002 Operators Manual

If you are running a Case CX135SR, CX75SR, CX80 2002 Operators Manual on the job site, you already know that guessing which lever does what or when to change the hydraulic oil is a fast way to damage a $100k machine. I have seen operators blow a travel motor because they skipped the warm-up procedure in Section 5. That mistake costs days of downtime. This manual is the factory-issued book that came with the machine from CASE – not some reprinted, redrawn copy that loses the torque spec on page 73. It is 332 pages of the same content the dealer uses to train operators. The language is Spanish, but the numbers and diagrams are universal. Get it on your tablet or print it out and keep it in the cab.

Safety Decals and Hand Signals: Why You Read Page 2 First

Page 2 of this manual lays out the three hazard levels – Danger (red), Warning (orange), Caution (yellow). It is not fluff. When you see a red decal on the boom, you stop the engine before reaching for that grease fitting. The manual explains each decal and the hand signal system used in Section 3. If you hire a temp operator, hand them this section. They will understand the stop signal before they put a bucket through a gas line. CASE put those warnings there because they have seen what happens when you ignore them.

Controls & Instruments: Know Your Joysticks and Pedals

Section 4 covers every switch, gauge, and joystick pattern. The CX135SR has a different control configuration than the CX75SR. This manual gives you the factory layout for each model so you can set the pattern valve correctly. I have had guys complain that the excavator “drives backwards” – they had swapped the travel pedals. Section 4 shows the correct orientation. Also includes the instrument cluster warning lights: alternator, engine oil pressure, hydraulic oil temperature. If that red light stays on after start-up, you do not move the machine until you read the troubleshooting in Section 10.

Operating Instructions: Cold Start and Shutdown Sequence

Section 5 – Instrucciones de utilización – is the step-by-step procedure for starting, warming up, and shutting down the diesel engine. It tells you to let the engine idle for five minutes before working the hydraulics. Skip that and you wear out the main pump seals. The warm-up cycle for the CX80 is different from the CX135SR because of the engine displacement. The manual specifies the exact rpm and time. Also covers emergency shutdown if the engine runs away. That page is worth memorizing before you even turn the key.

Maintenance Schedule: When to Grease and Change Fluids

Section 7 and Section 8 lay out the periodic maintenance intervals in hours. Grease the bucket pins every 10 hours. Change the hydraulic oil filter at 500 hours. The CX75SR and CX80 share a common hydraulic tank capacity, but the CX135SR takes a different grade of oil. The manual gives you the SAE viscosity for each climate. Do not trust a generic chart. Use the table on page 194 of Section 12 – Especificaciones – for exact fluid capacities and ground pressure numbers. I keep a copy of that page laminated in the tool box.

Source Validity: OEM Factory Print, Not a Copy

This manual carries the Case copyright and part number LEP 87631604 ES. It was printed in May 2002 and revised in January 2007. The PDF is a direct scan of the factory document – no pages missing, no aftermarket rewriting. Aftermarket manuals often skip the safety decal section or round torque values. This one includes the actual torque specification for track adjusting bolts and final drive drain plugs. You can confirm those against the dealer service bulletin. If you need a service manual with engine rebuild steps, check the Case CX135SR 2004 Service Manual – Section: Engine Service Manual or the CASE CX75SR CX80 2004 Service Manual. For an updated operator’s guide, see the CASE CX135SR 2011 Operator’s Manual.

What This Manual Covers (332 Pages)

• Section 1 – Al propietario (owner information)
• Section 2 – Números de identificación (serial number locations)
• Section 3 – Seguridad (safety decals, hand signals)
• Section 4 – Mandos/Instrumentos (controls, gauges, switches)
• Section 5 – Instrucciones de utilización (startup, operation, shutdown)
• Section 6 – Conducción en el trabajo (operating techniques)
• Section 7 – Periodicidad de mantenimiento (maintenance intervals)
• Section 8 – Engrase/Filtros/Fluidos (lubrication, filters, fluids)
• Section 9 – Mantenimiento/Regulación (adjustments)
• Section 10 – Sistema eléctrico (electrical system)
• Section 11 – Almacenamiento (storage)
• Section 12 – Especificaciones (specs)

For additional reference on the track drive system, see Manual Transmission and Manual Transmission – though this machine uses hydrostatic drives, the principles of gear reduction apply.

Frequently Asked Questions

Is this manual available in English?

No. This specific manual is printed in Spanish. CASE produced separate operator manuals for English markets. The technical data – torques, capacities, clearances – are language-independent. If you can read a table and understand a diagram, you can operate the machine safely with this manual.

Can I use this operator manual for repairs?

No. This is an operator’s manual, not a service manual. It covers daily operation and maintenance. For engine rebuild, hydraulic pump service, or electrical troubleshooting, you need the factory service manual. Check the related manuals listed above.

If you run these machines every day, stop relying on memory or a dog-eared photocopy. Access the Factory Manual now and keep the correct procedures in the cab. One stuck control valve or missed grease point can cost you a shift. This paper saves that.