1990 Case 1825 Lug Nut Torque & Bolt Specs

The 1990 Case 1825 lug nut torque is 125 ft-lbs, tightened with a 19mm socket on M14x1.5 studs. Torque in a star pattern in two passes (snug, then final), and re-check after the first 50–100 miles of driving. Use a calibrated torque wrench — not an impact gun — for the final pass.

Lug nut torque: 125 ft-lbs · Socket size: 19mm · Thread: M14x1.5.

This page is the OEM-referenced fastener summary for the 1990 Case 1825. Use it before any maintenance or repair job where torque values matter — brake work, wheel changes, suspension service, engine teardowns, or oil changes. Specs are pulled from manufacturer service literature, cross-checked against community data, and updated as new chassis variants become available.

For the 1990 Case 1825, fasteners follow SAE inch standards typical of 1990s-era Case engineering. Always confirm spec against the factory service manual before tightening safety-critical fasteners (suspension, brake, steering, head bolts).

Common fastener categories on the 1990 Case 1825

Wheel / lug nut torque and thread spec (covered above)
Brake caliper bracket bolts (typically 80-130 ft-lbs) and slide/guide pins (18-35 ft-lbs)
Engine oil drain plug torque — rarely above 30 ft-lbs; always use a new crush washer
Transmission pan, valve cover, and intake manifold bolts (low torque, often 89-106 in-lbs)
Suspension control arm, sway bar, tie rod end and ball joint torque
Spark plug torque (typically 10-15 ft-lbs on aluminum heads — do not exceed)
Differential cover bolts (RWD/4WD only) and transfer case fasteners

Repair guidance for this model year

Heads up for 1990 Case 1825 owners: Vehicles this age frequently have seized fasteners due to thread corrosion. Apply penetrating oil (PB Blaster, Kroil) 24 hours before any wrenching, and have a thread chaser on hand. Lug studs are particularly prone to thread damage at this age; if a nut spins on without engaging, the stud is stretched and must be replaced before the wheel goes back on.

Tools you will need

SAE socket set (1/4"-7/8"), 6-point impact-rated
Calibrated torque wrench (10-150 ft-lbs covers most automotive jobs; add a 0-250 ft-lbs wrench for truck lug nuts)
Breaker bar (24" minimum) for initial loosening
Penetrating oil (PB Blaster or Kroil) for any fastener over 5 years old
Anti-seize on stainless or dissimilar-metal threads; thread-locker (Loctite blue) on critical reassembly

Frequently asked questions

What is the lug nut torque on a 1990 Case 1825?

The OEM-specified lug-nut torque for the 1990 Case 1825 is 125 ft-lbs, using a 19mm socket on M14x1.5 thread studs. Use a calibrated torque wrench in a star pattern, in two passes (50% and 100%), and re-check after 50-100 miles of driving.

What socket size do I need for the 1990 Case 1825 lug nuts?

The 1990 Case 1825 uses a 19mm socket. A 6-point impact-rated socket is recommended over a 12-point chrome socket — 12-points round off lug nuts under impact-driver use.

Are the 1990 Case 1825 fasteners metric or SAE?

SAE inch is the standard for this vehicle. Most fasteners on this vehicle are SAE inch, common sizes 1/4", 5/16", 3/8", 7/16", 1/2". Bolt-head markings are the fastest way to confirm grade and material at the bench.

Other Case 1825 years

Same model, different model year — fastener spec may change. Always confirm against the year for your VIN.

All 21 1990 Case 1825 fastener specs

Per-bolt torque, wrench size, and thread spec for the 1990 Case 1825, sourced from OEM service literature and verified against community shop data. Values pair imperial (ft-lb) and metric (Nm) where the manufacturer publishes both.

Engine — 1990 Case 1825

Engine bolt-by-bolt torque for the 1990 Case 1825, including the long block, valve covers, and intake. The oil drain plug uses a 17mm drive on a M14x1.5 thread, torqued to 45 ft-lbs at the oil pan.

Electrical — 1990 Case 1825

Electrical fasteners on the 1990 Case 1825. At the bracket, the alternator pivot bolt torques to See sequence (14mm drive, M10x1.5 thread). For the tensioner body, plan for a 12mm tool on a M8x1.25 stud; final torque is 22 ft-lbs (belt tensioner lock bolt). Belt tensioner pivot bolt tightens to 35 ft-lbs, takes a 15mm driver, runs on M10x1.5 threads, located at the block. The alternator b+ terminal nut uses a 13mm drive on a M8x1.25 thread, torqued to 15 ft-lbs at the alternator. At the block, the alternator ground strap bolt torques to 8 ft-lbs (10mm drive, M6x1.0 thread). For the bracket, plan for a 15mm tool on a M10x1.5 stud; final torque is 35 ft-lbs (idler pulley bolt). Starter support bracket bolt tightens to 22 ft-lbs, takes a 12mm driver, runs on M8x1.25 threads, located at the block/transmission. The starter heat shield bolt uses a 10mm drive on a M6x1.0 thread, torqued to 8 ft-lbs at the starter body. At the block, the starter ground strap bolt torques to 8 ft-lbs (10mm drive, M6x1.0 thread). For the alternator, plan for a 10mm tool on a M6x1.0 stud; final torque is 70 in-lbs (7.9 Nm) (alternator terminal nut). Alternator support bracket bolt tightens to 22 ft-lbs, takes a 12mm driver, runs on M8x1.25 threads, located at the block. The alternator adjustment bolt uses a 12mm drive on a M8x1.25 thread, torqued to 22 ft-lbs at the bracket.

Hydraulic — 1990 Case 1825

Hydraulic fasteners on the 1990 Case 1825. For the pump mount, plan for a 13mm tool on a M8x1.25 stud; final torque is 35 ft-lbs (hydraulic pump bolt). Hydraulic line fitting tightens to 45 ft-lbs, takes a 22mm driver, runs on M16x1.5 threads, located at the various. The hydraulic motor bolt uses a 17mm drive on a M12x1.75 thread, torqued to 85 ft-lbs at the motor mount. At the valve block, the control valve bolt torques to 25 ft-lbs (13mm drive, M8x1.25 thread).

Drive — 1990 Case 1825

Drive fasteners on the 1990 Case 1825. Wheel bolt tightens to 125 ft-lbs, takes a 19mm driver, runs on M14x1.5 threads, located at the wheel hub. The drive motor bolt uses a 19mm drive on a M14x2.0 thread, torqued to 110 ft-lbs at the chain case.

Loader — 1990 Case 1825

Loader fasteners on the 1990 Case 1825. The quick attach pin uses a 24mm drive on a Press Fit thread, torqued to N/A — Press Fit at the attachment plate. At the cylinder end, the cylinder pin lock torques to 110 ft-lbs (19mm drive, M14x2.0 thread).

New to torquing wheels? Read our How lug nut torque works — the complete guide for star-pattern sequence, re-torque intervals, and how to read a lug spec — then use the 1990 Case 1825 numbers above.

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