Part of the Case Repair Manuals.
Looking for the factory procedures to rebuild your Case skid steer? This massive 884-page Case 1835 Uni-Loader, 188 Diesel Engine, 148G Spark Ignition, G188D service manual PDF (OEM #9-68700) covers every inch of your machine. Inside, you get complete hydraulic schematics for the hydrostatic drive, full wiring diagrams to trace electrical faults, and extensive troubleshooting charts for both power plants. Open to page after page of step-by-step rebuild procedures for the dual gear pump, cylinders, and control valves. Verify your engine tolerances by checking the cylinder sleeve inside diameter against the factory 3.8125 to 3.8115-inch limit, and confirm your dual gear pump pushes exactly 11 U.S. gpm at 2250 psi. Wasted time in the shop burns cash. Grab this bookmarked download, pull it up on your shop tablet, and start turning wrenches.
What's Inside This Case 1835, 188 Diesel Engine, 148G Spark Ignition, G188D Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 7-50 | Decals and Painting |
| Engine – 188D Diesel | 51-256 | Engine Diagnosis, Engine Tune-Up, Cylinder Head, Valve Train and Camshaft, Cylinder Block, Sleeves, Pistons and Rods, Crankshaft, Bearings and Oil Seals, Oil Pump, Air Cleaner and Muffler, Ether Injection, Cooling System |
| Engine – 148G Spark Ignition | 257-438 | Engine Tune-Up, Cylinder Head, Valve Train and Camshaft, Cylinder Block, Sleeves, Pistons and Rods, Crankshaft, Bearings and Oil Seals, Oil Pump, Cooling System |
| Engine Lubrication | 439-444 | Engine Lubricating Oil and Coolant System, Oil Pump Flow |
| Fuel System | 445-530 | Fuel Filters 188D Diesel, Fuel Injection Pump, Fuel Injectors, Engine Controls, Fuel Lines, And Fuel Tank, Carburetor |
| Electrical System | 531-656 | Electrical System Specifications and Troubleshooting, Wiring Diagram, Gauges, Battery, Starter and Solenoid, Alternator, Spark Ignition System, Electrical Accessories |
| Power Train | 657-766 | Hydrostatic Troubleshooting, Testing, And Adjustments, Hydrostatic System Diagrams and Operation, Piston Pumps, Hydrostatic Motor, Hydrostatic Controls, Drive Sprockets and Chains |
| Brakes | 767-770 | Parking Latch |
| Hydraulic System | 771-864 | Hydraulic Diagrams, Maintenance and Troubleshooting, Dual Gear Pump, Equipment Control Valve, Auxiliary Control Valve, Cylinders |
| Mounted Equipment | 865-884 | Loader, Auxiliary Hydraulic Installations, ROPS Canopy |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Dual Gear Pump Rated Output | 11 U.S. gpm at 2250 psi at 2200 rpm (41.6 L/min at 15 513 kPa) | p. 805 |
| Dual Gear Pump Bushing I.D. (max) | .691 Inch (17.5 mm) | p. 813 |
| Cylinder Sleeve I.D. | 3.8125 to 3.8115" | p. 21 |
| Piston Rings No. 1 Compression End Gap | .015 to .025" | p. 21 |
| Fuel Injector Clamp Capscrews Torque | 18 to 22 ft. lbs. | p. 480 |
| Fuel Injection Pump Idler Gear to Fuel Pump Gear Backlash | .0005 to .007" | p. 451 |
| Timing Gear Cover Sealant | RTV108 (Case Part Number M20704) | p. 278 |
| Oil Pan Gasket Sealant | No. 2 Permatex | p. 205 |
| Hydraulic Oil Operating Temperature Range | 130 - 150°F (54 - 66°C) | p. 787 |
Case 1835, 188 Diesel Engine, 148G Spark Ignition, G188D Common Problems This Manual Covers
Case 1835 UNI-LOADER hydraulic system loses pressure and stops operating functions when hydraulic oil heats up. p. 805
Drain the hydraulic reservoir and verify the dual gear pump rated output. Test the pump to ensure it delivers 11 U.S. gpm at 2250 psi at 2200 rpm as shown on page 805. If output drops when hot, replace the worn pump assembly.
Manual Section: Hydraulic System TroubleshootingDiesel engine burns excessive oil, blows blue smoke, and lacks power during heavy load operation. p. 21
Remove the cylinder head and measure the cylinder sleeve inside diameter on page 21. Verify the bore is between 3.8125 and 3.8115 inches. If the sleeve exceeds this dimension, install new sleeves and ensure connecting rod bearing oil clearance is .0010 to .0040 inches.
Manual Section: Engine DiagnosisEngine runs rough at low idle or misfires due to suspected mechanical injection pump issues. p. 451
Inspect the injection pump idler gear backlash. Measure the idler gear to fuel pump gear backlash and verify it is .0005 to .007 inches as specified on page 451. Torque the fuel injector clamp capscrews to 18 to 22 ft. lbs. before restarting.
Manual Section: Fuel Injection Pump TroubleshootingSpark ignition engine stalls out under load or cranks but will not start in cold weather. p. 40
Check the engine oil pressure with the engine warm and operating at rated speed. Verify the pressure reads 24 to 32 PSI as outlined on page 40. If pressure is correct, check the spark plug gap and inspect the ignition coil for damage.
Manual Section: Spark Ignition System TroubleshootingFrequently Asked Questions
How to reset hydraulic system on Case 1835 Uniloader?
To bring the hydrostatic system back to an operational state after a repair, first ensure all components are clean and properly installed. Then, raise the machine, put blocks under the frame, start the engine at low idle, and slowly move each control lever all the way to the front and rear until each drive system is working correctly. Finally, stop the engine, check for oil leaks, and verify the hydraulic reservoir oil level.
What are torque specs for pump mounting bolts on Case 1835C Uniloader?
For the fuel pump, the mounting nuts should be torqued to 35 to 42 ft. lbs. (47 to 57 Nm). The oil pump mounting bolts should be torqued to 90 to 100 ft. lbs. (122 to 136 Nm).
How to reset Case 1835 hydraulic filter warning?
To reset the hydraulic filter warning, you typically need to replace the filter element. After servicing the filter, remove the red band from the restriction indicator by pushing its top to put the green band in full view again.
How do you fix case 1835 UNI-LOADER hydraulic system loses pressure and stops operating functions when hydraulic oil heats up?
Drain the hydraulic reservoir and verify the dual gear pump rated output. Test the pump to ensure it delivers 11 U.S. gpm at 2250 psi at 2200 rpm as shown on page 805. If output drops when hot, replace the worn pump assembly.
What format is this Case 1835 UNI-LOADER, 188 Diesel Engine, 148G Spark?
A 884-page Service Manual in searchable PDF format, available the moment you complete checkout. View on computer, tablet, or phone, with no shipping wait.
Am I able to print pages from this Case 1835 UNI-LOADER, 188 Diesel Engine?
No restrictions at all. Print individual pages, full chapters, or the entire manual. The PDF is completely unlocked.
Can I find hydraulic circuit diagrams in this Case 1835 UNI-LOADER, 188 Diesel?
Yes. The manual includes hydraulic circuit diagrams, system schematics, and component specifications with pressure ratings.
Reviews
There are no reviews yet.