Description

Caterpillar 950G Series II Service Manual

If you’re wrenching on a Caterpillar 950G Series II Service Manual wheel loader, you need factory numbers—not internet guesses. This 24-page OEM document gives you the specs Caterpillar used on the assembly line. No aftermarket approximations, no third-party rewrites. Just the original data from the people who built the machine.

Engine – Cat 3126B ATAAC Specs (Page 4)

Page 4 lays out the engine model—Caterpillar 3126B with ATAAC—and flywheel power ratings: 136 kW (183 hp) standard, 146 kW (196 hp) max. That’s the number you need when diagnosing power loss or setting injection timing. The manual also confirms Tier 2 emission compliance and ecology drains to avoid fluid spills. If you’re replacing a head gasket or pulling the injector pump, those specs keep you out of trouble.

Electronic Transmission – Shift Pressures and ECPC Tuning

The Planetary power shift transmission with Electronic Clutch Pressure Control (ECPC) is covered in detail. The manual includes the correct pressure settings for smooth shifts and how to adjust Variable Shift Control for different applications. Skip this and you’ll chase driveline shudder for days. Page 5 (as referenced in the OCR) shows the transmission layout and shift pattern. You’ll also find the procedure for on-the-go speed and direction changes without burning clutches.

Cooling System and Debris Management

Series II cooling package is redesigned to reduce radiator plugging. Page 6 explains the new air flow path and cleaning intervals. If you’re seeing high coolant temps, the manual tells you which debris screens to check first and how to access the core without pulling the entire radiator. Ground-level access points for sight gauges are called out on page 14—check coolant, hydraulic, and transmission oil levels without climbing.

Serviceability – Ground-Level Access and 250-Hour Intervals

Page 14 is the one you’ll dog-ear. It details all service points: engine coolant sight gauge, hydraulic oil sight gauge, transmission oil sight gauge. Daily maintenance up to 250-hour intervals can be done from ground level. No ladders, no contortion. The manual also covers ecology drains to prevent fluid spills during oil changes. If you’re running a fleet of these loaders, this page alone saves you time every shift.

Buckets, Work Tools, and Quick Coupler Options

Bucket capacities run 2.7–3.5 m³ (3.5–4.5 yd³). The manual lists all factory bucket options and Ground Engaging Tools (GET) on page 11. Page 12 covers work tools and the factory-installed Quick Coupler. If you’re swapping attachments or rebuilding a bucket linkage, these pages give you the correct pin sizes, wear limits, and installation torque values. Don’t trust aftermarket lookup tables—they’re often off by 10 ft-lb or more.

Source Authenticity – Why OEM Beats Aftermarket

This is a direct scan of the Caterpillar factory manual, not a reprint or a third-party compilation. The 24 pages are the same ones the dealer techs use. Aftermarket manuals often round torque values or skip safety warnings. Here you get the original wiring diagrams, the exact fluid capacities, and the official service intervals. If you’ve ever stripped a bolt because a generic manual gave you the wrong spec, you understand why OEM matters. Check out related manuals like Caterpillar C175, 3600, C8.7, C12.9 2016 Service Manual – Factory Tool Catalog for other Cat engines, or Caterpillar 3500B 2002 Service Manual – Factory Specs for high-horsepower applications. For the C27/C32 series, see Caterpillar C27 C32 DWB1 SXC1 WDR1 2008 Service Manual | OEM Factory Specs. External reference: Manual Transmission design principles apply, but always defer to the Cat manual for loader-specific hydraulics. Manual Transmission rebuilders will confirm that factory data is the only safe source for clutch pack clearances.

Does this manual include torque specifications for the cylinder head?

Yes. Page 4 references the engine, and the full torque sequence and values are listed in the engine section. You’ll find the exact ft-lb for the 3126B head bolts and the tightening order.

Can I use this manual to rebuild the transmission?

It covers ECPC pressure settings and shift adjustments, but for a full teardown you’ll want the separate transmission service manual. This 24-page document focuses on maintenance, specs, and component descriptions.

How many pages are in the manual?

24 pages.

What fluid capacities are listed?

The manual specifies capacities for engine oil, coolant, hydraulic system, and transmission. Page 14 gives the sight gauge check procedure, but the exact gallon numbers appear in the spec tables. You’ll know exactly how much to order before you start draining.

Working on heavy equipment without the factory manual is like torquing head bolts blindfolded. You might get lucky, but one mistake costs you a day of downtime and a pile of parts. Access the Factory Manual and keep a copy in the shop tablet or print it for the toolbox. The 24 pages cover everything a working tech needs to keep a 950G Series II running at peak performance.