Caterpillar 938G II Wheel Loader Parts Manual Volume II – SEBP3499-21 PDF

Description

Caterpillar 938G II Wheel Loader Parts Manual Volume II – SEBP3499-21

Volume II of the Caterpillar 938G II Wheel Loader Parts Manual is the half of the parts catalog that starts at the loader frame and rear frame and then works through every system bolted to them: braking, steering, hydraulics, implements, work tools and the complete operator station. It carries document number SEBP3499-21 and applies to machine serial prefix RTB1-Up, engine prefix BMA1-Up, transmission prefix WNF1-Up and torque converter prefix TCC1-Up. Every group is presented as an exploded illustration paired with a matching parts list, so a component can be located visually on the drawing and then confirmed by part number, description and quantity in the table beside it.

File Details

• Manual type: Parts Manual (Parts Catalog), Volume II
• Brand: Caterpillar
• Model: 938G II Wheel Loader
• Document number: SEBP3499-21
• Serial number prefixes covered: RTB1-Up (Machine), BMA1-Up (Engine), WNF1-Up (Transmission), TCC1-Up (Torque Converter)
• Language: English part nomenclature, with multilingual section headers and contents listings in French, Spanish, Portuguese and German
• Pages in this file: 603 (printed Volume II pages 495-1016)
• File format: PDF

Chapters Covered

• Frame and Body – frame as-loader and frame as-rear, articulating hitch, hood and guard groups, hood tilt actuator, radiator grills (standard and heavy duty), fenders and roading fenders, fender extensions and hinges, battery door, counterweights, ladder, grease lines, bottom and power train guards, axle oil cooler guards, engine compartment shield, air inlet support
• Braking System – brake accumulator, foot brake base and pedal groups, parking brake, traction control, service brake control, brake control conversion, proportional brake manifold, solenoid valves
• Steering System – steering cylinder and mounting, steering cylinder seals and internal components, primary and secondary steering lines, secondary steering pump and motor, metering pump (HMU), piston pump, rotating pump group, steering column, steering valves, pump control and relief valves
• Hydraulic System – ride control accumulator and lines, pilot valve bodies and plates, vane pump cartridge, lift and tilt cylinder groups, coupler cylinder, handle control, 2-valve and 3-valve hydraulic arrangements, kickout and positioner groups, coupler, front, pilot, ride control, tilt cylinder and hydraulic oil cooler lines, gear, piston and vane motors and pumps, hydraulic tank and filter, fan reversing valve and mounting, main control valve, pilot valve cartridges, relief, shuttle, shutoff, selector and solenoid valves
• Implements – lift arm assemblies and bearings, bucket control groups, lift arm arrangements
• Work Tools – tip adapters, material handling arm, general purpose and material handling buckets, quick coupler control arrangements and frames, cutting edges, pallet forks, long, short and penetration tips
• Operator Station – air conditioner and heater groups, refrigerant accumulator, compressor and condenser, seat adjuster, armrests, cab and cab enclosures, enclosed and open ROPS, canopy, dash, cab doors and windows, air ducts, backrest extension, cab air filter, vandalism guards, radio installation, cab liners and open ROPS liners, air conditioner and heater lines, literature, mirrors, payload monitor, wiper motors, cab mounting, instrument panels, governor pedal, radio, recliner, seat belts, seat and suspension groups, sun screen, window washer, door window and window wiper
• Service Equipment and Supplies – film groups, diagnostic lines with remote pressure taps, vandalism locks and protection, lubrication chart mounting, plate and film groups
• Part Number Index – a full alphanumeric index of every part number printed in this volume, with the page where each one appears

Read end to end, this 938G II Wheel Loader parts manual volume gives a technician or parts counter the complete front-half and rear-half breakdown of the machine: every weld-on boss, plate, link and stud on the loader and rear frames is itemised, every hydraulic line group is drawn with its clips, flanges, seals and adapters called out, and the cylinder sections are detailed down to the buffer seal, U-cup, wear ring and backup ring. Because the groups are numbered rather than described in prose, you can work from the machine outward – identify the assembly, find the illustration, read the reference number, then pull the part number and quantity straight from the adjacent list.

How Each Part Group Is Laid Out

Each group in the Caterpillar 938G II parts catalog volume opens with a header block that states the group part number, the serial number range it applies to, and the parent group or attachment it belongs to. Below that sits the parts table with a note and reference number column, a graphic reference pointing back into the exploded view, the part number itself, the quantity required, the part name and the page where that part is illustrated. Small letters beside the table carry real meaning: an M flags a metric part, a Y points to a separate illustration, a D means the item is ordered by the meter, an E means ordered by the centimeter, a B means use as required, and a C marks a change from a previous type. Reading those letters correctly is often the difference between ordering the right hose length or fastener thread and ordering the wrong one.

Serial Number Ranges and Change Notes

This volume is deliberately split by serial number in several places, and the headers make that explicit – for example the hydraulic pilot lines are broken into RTB1-431, RTB432-Up, RTB1-495, RTB496-Up, RTB1-437 and RTB438-Up variants, the ride control lines into RTB1-657, RTB658-2338 and RTB2339-Up, the radiator grill into RTB302-338, RTB339-Up and RTB1518-Up, the hood and guard group into RTB1-338, RTB339-1517 and RTB1518-Up, and the quick coupler into RTB1-285 and RTB286-Up. Checking the machine serial number against those break points before ordering is essential, because several groups are also flagged as attachments or as not usable with other arrangements – the quick coupler page set, for instance, notes combinations that cannot be used together. Field replacement notes appear where a newer group supersedes an older one, such as the ride control accumulator and the coupler cylinder listings, so the superseded and current numbers can both be traced.

Part Number Index for Fast Lookup

The final section of this 938G II Wheel Loader parts manual is a straight alphanumeric part number index. Instead of working through group after group, you look up the number you already have and it sends you directly to the page where it is illustrated. For anyone rebuilding a frame, chasing a hydraulic leak through a line group, or replacing wear items on a bucket or quick coupler, that index turns a long search into a single step.

What This Parts Manual Lets You Do

With Volume II of the SEBP3499-21 parts catalog on hand, you can identify and order the correct components for the loader frame, rear frame, articulating hitch, hood and guards, braking and traction control systems, the full steering circuit including the secondary steering pump and motor, the complete hydraulic system from pilot cartridges to main control valve, lift and tilt cylinders, kickout and positioner hardware, quick coupler frames and cylinders, buckets, cutting edges, tips and pallet forks, and every part of the cab, ROPS, seat, heater, air conditioner and instrument panel. It supports rebuilding rather than guessing, because each part is tied to a specific illustration, a quantity, and a serial number range.

Getting the right part number matters more on a wheel loader than almost anywhere else – an incorrect seal, hose length, fastener thread or cylinder component can mean a machine down for another week. Having the exact group breakdown in front of you removes that risk and lets your dealer or supplier pull the correct item the first time.

IMAGES PREVIEW

This Caterpillar 938G II Wheel Loader Parts Manual Volume II is delivered as an instant PDF download. There is no shipping and nothing to wait for – the file opens on a laptop, tablet or phone in the workshop or at the parts counter, and any page or illustration can be printed and taken out to the machine. Keep it on a device in the service truck and you have the whole front-half and rear-half parts breakdown of the 938G II available whenever you need it.