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On the DT-generation Ram 1500 the front brake job is mechanically simple but physically big. The twin-piston caliper and 14-15 inch rotor are heavy, and the two caliper bracket bolts into the knuckle are torqued high enough that a stubby ratchet will not move them. Budget for a long breaker bar and a torque wrench that actually reads to 150 ft-lb, not a 3/8 in click wrench maxing out at 80.
What varies is the brake package, not the engine. eTorque 5.7, Pentastar and EcoDiesel trucks all use the same basic front caliper design, but rotor diameter and pad shape change with max tow, heavy-duty and Rebel/TRX-adjacent packages, so order by VIN or measure the old rotor. The mistake people make most often is skipping the hub face: leave scale and rust on the hub and the brand new rotor sits crooked, and you get pedal pulsation within a thousand miles and blame the rotor.
| Item | Type | Product search |
|---|---|---|
| Floor jack 2.5 ton or larger, low-profile not needed (truck sits high) Lift the front of the truck at the frame rail or crossmember. | Required | search retailer |
| Jack stands 3 ton pair minimum Support the frame while wheels are off. | Safety | search retailer |
| Wheel chocks Rubber pair Chock the rear wheels before lifting. | Safety | search retailer |
| Impact wrench or breaker bar 1/2 in drive, 18 in breaker bar minimum Break loose lug nuts and the very tight caliper bracket bolts. | Required | search retailer |
| Lug nut socket 22 mm, 6-point, 1/2 in drive (thin-wall or impact) All DT 1500 wheels use 22 mm lug nuts. | Required | search retailer |
| Hex bit socket 7 mm hex (Allen) bit socket, 3/8 in drive Caliper guide pin (slide pin) bolts on most DT front calipers. | Required | search retailer |
| Combination wrench 15 mm and 18 mm Hold the guide pin flats if a pin spins while loosening the bolt. | Recommended | search retailer |
| Socket 21 mm, 6-point, 1/2 in drive Caliper bracket (anchor) bolts to the steering knuckle. | Required | search retailer |
| Socket extension set 3/8 in and 1/2 in, 3-6 in Clears the wheel hub and dust shield when reaching bolts. | Recommended | search retailer |
| C-clamp or brake piston spreader 6 in C-clamp, or twin-piston pad spreader Pushes both caliper pistons back evenly to fit new pads. | Required | search retailer |
| Bungee cord or caliper hanger Hook-end cord or S-hook hanger Hangs the caliper so the flexible brake hose is not stressed. | Required | search retailer |
| Dead blow or 3 lb hammer Dead blow / brass hammer Frees rust-bonded rotors from the hub face. | Recommended | search retailer |
| Bolt for rotor jacking holes M8 x 1.25 bolt, about 40 mm long (two) Threaded holes in the rotor hat push it off a seized hub. | Recommended | search retailer |
| Wire brush and/or hub cleaning disc Steel wire brush; 4-1/2 in hub abrasive disc for angle grinder Clean rust from the hub face so the new rotor sits flat. | Consumables | search retailer |
| Torque wrench 1/2 in drive, 30-250 ft-lb range Lug nuts and caliper bracket bolts are high-torque fasteners. | Required | search retailer |
| Torque wrench (small) 3/8 in drive, 10-80 ft-lb Accurate torque on the guide pin bolts. | Recommended | search retailer |
| Brake cleaner Chlorine-free aerosol, 2 cans Removes the protective oil coating from new rotors and cleans hardware. | Consumables | search retailer |
| Brake caliper grease Silicone/synthetic high-temp caliper lube Lubricate guide pins, pin boots, and pad abutment clips. | Consumables | search retailer |
| Anti-seize Nickel or copper, small tube Thin film on the hub face (not the friction surface) and lug seats if desired. | Consumables | search retailer |
| Turkey baster or syringe Dedicated for brake fluid Draw fluid from the master cylinder before pushing pistons back. | Recommended | search retailer |
| Front brake pads DT 1500 front set - confirm by VIN; heavy-duty/2500-style packages differ The wear item being replaced. | Parts | search retailer |
| Front rotors Pair; commonly 14.9 in (378 mm) vented on DT - measure or check by VIN Replaced with pads for a full brake job. | Parts | search retailer |
| Brake hardware / abutment clips Often included with pad set New stainless clips prevent pad bind and squeal. | Parts | search retailer |
| DOT 3/DOT 4 brake fluid DOT 3 meeting MS-9992 (unopened bottle) Top off the reservoir after the job if needed. | Consumables | search retailer |
| Nitrile gloves and safety glasses Brake dust and cleaner are harsh on skin and eyes. | Safety | search retailer |
Tool sizes do not change between the 3.6 Pentastar eTorque, 5.7 Hemi eTorque and 3.0 EcoDiesel - all use 22 mm lug nuts, 21 mm caliper bracket bolts and 7 mm hex guide pin bolts. What changes is parts, not tools: trucks with the max tow or heavy-duty brake package use a larger front rotor and a different pad shape, so order by VIN. A small number of trucks use hex-head guide pin bolts instead of internal hex, so check before you start.
| Wheel lug nuts (22 mm) | 130 ft-lb (176 Nm) |
| Caliper bracket (anchor) bolts to knuckle, 21 mm | approx. 130 ft-lb (176 Nm) - verify in the service manual |
| Caliper guide pin bolts (7 mm hex) | approx. 26 ft-lb (35 Nm) - verify in the service manual |
| Brake hose banjo bolt (only if hose disturbed) | verify in the service manual |
22 mm. Use a 6-point socket, and torque them to 130 ft-lb in a star pattern, then re-check after 50-100 miles.
No. The electric parking brake only acts on the rear wheels, so front pads and rotors can be done with hand tools. You only need a scan tool (or the EPB service mode) if you are doing the rear brakes.
The guide pin (slide pin) bolts are typically a 7 mm internal hex, and the caliper bracket bolts into the knuckle take a 21 mm socket. Check yours before starting, as some units use an external hex head guide pin bolt.
Hit the rotor hat, not the friction face, with a dead blow or brass hammer while rotating it, or thread two M8 x 1.25 bolts into the threaded jacking holes in the hat and tighten them evenly to press the rotor off the hub.