Part of the Case Repair Manuals.
Hunting for a Case 85RM2 service manual PDF? All 148 pages of this factory manual (OEM #S406205M2, a Case reprint of the Drott Carrydeck Crane book) cover the Carrydeck Crane from drive train to boom tip. Inside: a full hydraulic schematic, electrical schematics for both gas and diesel engines, exploded views of the main pump and transmissions, and troubleshooting charts for hydraulics, steering, and the charging system. You also get complete teardown procedures for the forward-reverse and three-speed transmissions, winch, swing mechanism, brakes, and every cylinder on the machine. Fill the hydraulic system to 35 gallons and torque the pump's four cap screws to 200 ft. lbs. Your crane is down and the OEM stopped answering the phone decades ago. This bookmarked PDF opens on any device; load it on your tablet, walk out to the machine, and start wrenching.
What's Inside This Case 85RM2 Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 5-7 | Safety Precautions, Nomenclature |
| Scheduled Maintenance | 8-11 | Hydraulic Oil Recommendations, Maintenance Schedule, Lubricants and Fluids, Pictorial Listing of Grease Fittings |
| Engine | 12-13 | Engine Performance Check, Air Cleaner Maintenance |
| Drive Train | 14-65 | Forward and Reverse Transmission (Maintenance, Trouble Shooting, Disassembly and Repair), Three Speed Transmission (Description and Operation, Maintenance |
| Brakes | 66-69 | Brake Master Cylinder, Bleeding Procedure, Wheel Brakes, Parking Brake |
| Steering | 70-72 | Trouble Shooting, Steering Actuator, Steering Linkage, Wheel Alignment |
| Boom and Mast | 73-86 | Boom Maintenance, Removal of Sequencing Boom and Crowd Cylinder, Boom Disassembly and Repair, Mast Bearing Removal, Swing Mechanism, Winch Assembly |
| Hydraulic System and Components | 87-130 | Introduction, Maintenance, Main Hydraulic Pump, Swing and Winch Motors, Auxiliary Winch Motor |
| Electrical | 131-143 | Introduction, Electrical Circuit Protection, Charging System, Control Circuits, Lights and Instrumentation Circuits, Troubleshooting |
| Charts and Schematics | 144-148 | Torque Value Charts, Hydraulic Schematic, Electrical Schematic Gas Engine, Electrical Schematic Diesel Engine |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Parking brake lever pull force | 50 lbs. | p. 67 |
| Return line pressure | below 30 psi | p. 69 |
| Hydraulic system capacity | 35 gallons | p. 82 |
| clearance between the thrust plate and the port end cover | 1/32 inch | p. 97 |
| torque for the four cap screws | 200 ft. lbs. | p. 98 |
Case 85RM2 Common Problems This Manual Covers
Case 85RM2 crane won't lift or swing, hydraulics groan and boom moves slow under load
Check the reservoir level first: system capacity is 35 gallons, per page 82, and a low level lets the pump pull air and cavitate. Top off, then run each circuit unloaded to purge air. Inspect the suction line and strainer for restriction and tighten every suction-side fitting; a loose clamp pulls air in and kills lift power.
Manual Section: Hydraulic System and Components p. 82Wheel brakes drag or fail to release fully after the pedal comes back up
Tee a pressure gauge into the brake return line; it must read below 30 psi during normal operation, the spec on page 69. Anything higher means a restricted return line holding the shoes applied. Clear or replace the restricted line, then bleed the system starting at the master cylinder, and road test for drag and heat.
Manual Section: Brakes p. 69Parking brake won't hold the machine on a grade even with lever fully set
Adjust the linkage until setting the lever takes about 50 lbs. of pull, the spec on page 67; less effort means the shoes never clamp fully. Inspect the lining and drum for oil contamination or glazing while the drum is off, replace soaked shoes, and fix the leaking seal that oiled them.
Manual Section: Brakes p. 67Main hydraulic pump whines and lift speed fades once the oil warms up
Test lift speed cold, then again at operating temperature; a pump that fades only when hot is worn past its internal clearances. During rebuild, leave about 1/32 inch between the thrust plate and port end cover as shown on page 97, then torque the four cap screws alternately to 200 ft. lbs. per page 98.
Manual Section: Hydraulic System and Components p. 97Frequently Asked Questions
How do I troubleshoot a Case 85RM2 crane not lifting?
If the crane is not lifting, check the hydraulic system for low oil level, restricted pump inlet, or a stuck main relief valve. The main relief valve is set to 2000 P.S.I. and can be checked at the inlet section of each valve bank. p. 110
What are the torque specifications for grade 5 and grade 8 bolts on the Case 85RM2?
Torque values vary by bolt size. For a 1/2 inch diameter bolt, the torque is 65 ft-lbs for Grade 5 and 100 ft-lbs for Grade 8. For a 1 inch diameter bolt, the torque is 530 ft-lbs for Grade 5 and 860 ft-lbs for Grade 8. p. 144
What is the recommended capacity and type of oil for the engine crankcase?
The engine crankcase capacity is specified in the separate Engine Manufacturer's Manual. Please refer to that document for the correct oil type and capacity for your specific engine model. p. 10
What is the procedure for bleeding the brake system?
To bleed the brake system, check the fluid level in the master cylinder, then in sequence starting from the left rear wheel, loosen the bleeder screw while someone pumps the brake pedal to keep the system pressurized. Repeat this for each wheel until the entire system is bled. p. 67
What is the required oil capacity for the hydraulic system?
The total capacity for the hydraulic system is 35 gallons (132L). p. 10
What do I get after purchasing this Case 85RM2 manual?
One scanned PDF covering 148 pages, delivered instantly. No disc, no shipping, no waiting on the post.
Is printing allowed for this Case 85RM2 Service Manual?
Absolutely. No DRM or copy protection. Print the whole manual or just the pages you need. Any home or office printer works.
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