Complete digital official shop manual contains service, maintenance, and troubleshooting information for the Case 521E Tier 3 Wheel loader. Diagnostic and repair procedures are covered in great detail to repair, maintain, rebuild, refurbish or restore your 521E Tier 3 Wheel loader like a professional mechanic in local service/repair workshop. This cost-effective quality manual is 100% complete and intact as should be without any missing pages. It is the same factory shop manual used by dealers that guaranteed to be fully functional to save your precious time.
This manual for Case 521E Tier 3 Wheel loader is divided into different sections. Each section covers a specific component or system and, in addition to the standard service procedures, includes disassembling, inspecting, and assembling instructions. A table of contents is placed at the beginning of each section. Pages are easily found by category, and each page is expandable for great detail. It is in the cross-platform PDF document format so that it works like a charm on all kinds of devices. You do not need to be skilled with a computer to use the manual.
521E TIER 3 Wheel loader Service Manual
Revised June 2009
Issued February 2008
Cleaning and Inspection
IMPORTANT: Do not use compressed air to dry bearings. Allow bearings to air dry.
Clean all parts except friction plates in brake disc pack using cleaning solvent. WEAR FACE PROTECTION WHEN USING COMPRESSED AIR.
Use compressed air to clear passages in planetary ring gear and brake housing.
Inspect bearing rollers for pitting, scoring, deformation, or other damage. Check inner face and bearing cage for deformation, dents, and other damage. Check associated bearing cups for scratches, grooves, or cracks. Check bearings for rough spots or binding by holding bearing and rotating. If bearing binds or action is not smooth, replace the bearing.
Inspect bearing cups for pitting, scoring, cracks, or other damage. Replace if any of these conditions are seen.
NOTE: If a bearing or bearing cup requires replacement, the associated part must also be replaced.
Check planetary ring gear, planetary gears, and planetary carrier gear teeth for cracks, breaks, chipping, or other damage. Replace the part if any of these conditions are seen. Check planetary carrier shaft splines for broken, cracked, or twisted condition. Replace if necessary.
Check wheel end shaft for cracked, broken, or twisted splines. Replace if any of these conditions are seen.
NOTE: Tools and axle shown in the following photographs may appear slightly different than the tools and axle you may have. The use of the tools and disassembly/assembly of axle is the same regardless of appearance.
WARNING: Always wear heat protective gloves to prevent burning your hand when handling heated parts.
Heat the wheel end shaft outer bearing to 120° C (248° F) in a bearing oven. Wearing heat resistant gloves or mittens, install the bearing on the wheel end shaft until the bearing is against the shoulder on the wheel end shaft.
Clean mounting surface of seal ring area on wheel end.