The Nissan rear drum brake assembly is a compact, mechanical system that stops and holds the vehicle using brake shoes, springs, a wheel cylinder, and an adjuster inside a rotating drum.
Use a labeled diagram to identify each part before you start: brake shoes, wheel cylinder, adjuster (self-adjuster), return springs, hold-down pins, backing plate, drum, and parking-brake lever and cable.
Clear parts callout: printable map to use at the bench
Top of the assembly: the return springs pull the shoes together; bottom holds the adjuster and parking-brake lever links.
Wheel cylinder sits at the top or slightly above center and pushes the shoes outward on hydraulic application.
The star-wheel adjuster sits at the bottom between shoe ends and sets shoe-to-drum clearance automatically; backing plate provides fixed contact points and anchor bosses.
Hold-down pins secure shoes to the backing plate and allow pivot at the leading edge; parking-brake lever attaches to the rear shoe and routes to the cable.
How to read Nissan exploded views
Vehicle left and right are usually shown as if you stand behind the car facing forward; confirm that notation on the diagram header — on many Nissan FSMs the driver’s side equals vehicle left for left‑hand drive models.
Spring tension direction is shown by curved arrows; strong springs compress toward their mounting boss and the short, curved end hooks into the shoe slot or anchor.
Top shoe vs bottom shoe: the primary or leading shoe typically has the shorter lining and faces the front of the vehicle; the secondary or trailing shoe has the longer lining and sits toward the rear.
Common Nissan shorthand: part numbers beside exploded view, callouts like “RH” and “LH,” and labels for sub-assemblies (e.g., ADJ for adjuster, WC for wheel cylinder).
Where to find OEM diagrams and reliable schematics
Start with the Nissan factory service manual (FSM) for model/year-specific exploded parts diagrams and torque specs; this is the authoritative source for fitment and sequence.
Dealer parts diagrams match OEM numbers and show exact part variants; use your VIN and production year to confirm the correct wheel-cylinder, adjuster, and hardware kit.
Haynes and Chilton provide repair-focused schematics and step sequences that are easier to read during a hands-on job, but always cross-check with FSM for torque values and clearance limits.
Reliable online PDFs come from OEM dealer portals or verified community archives; verify file headers, part numbers, and compare exploded views against physical parts before ordering.
Parts diagrams vs repair diagrams — know the difference
Exploded parts diagrams show every replaceable item and part number for ordering; they do not always show spring routing or install order clearly.
Service/repair diagrams and photos show spring orientation, hold-down pin installation, and the correct order to assemble for safe self-adjuster function.
Always match both diagrams: use exploded view to order parts, use service diagram to install them correctly.
Essential tools, parts and hardware checklist
Tools required: hydraulic jack, quality jack stands, torque wrench, drum puller or hub puller, brake spring pliers, hold-down pin pliers, needle-nose pliers, feeler gauges, and brake cleaner.
Parts to have on-hand: a complete brake hardware kit (return springs, hold-downs, adjuster), new brake shoes, wheel cylinder or rebuild kit, fresh DOT brake fluid, and optional replacement drums or resurfacing plan.
Useful extras: high-temp brake grease for backing-plate contact points, anti-seize for threads, parking-brake cable clips, and replacement dust caps or seals if damaged.
Safety and prep: lift points, wheel chocks, contamination control
Always chock the front wheels and place jack stands under the manufacturer-specified lift points on the unibody or ladder frame; never trust a jack alone.
Cap the master cylinder and avoid toppling fluid; brake fluid absorbs moisture quickly—do not leave the system open longer than needed.
Prevent contamination: keep grease and oil away from linings, wear nitrile gloves, trap brake dust with a cloth or vacuum on low setting, and dispose of used brake cleaner and fluid per local regulations.
Removing the wheel and drum — step-by-step extraction
Loosen lug nuts with the vehicle on the ground, jack the car, support with stands, remove wheel, and inspect drum for access to the adjuster window.
Back off the star adjuster through the access hole to retract shoes before attempting drum removal; if the parking brake is engaged, release cable at lever or unbolt retaining clip.
If the drum is stuck, apply penetrating oil at the hub face, tap the drum edge with a rubber mallet, or use the threaded stud method (screw wheel studs into the drum to push it off evenly).
A drum puller or a hub puller can remove seized drums; avoid excessive heat near wheel-bearing seals or ABS components; cut the drum only as a last resort if corrosion binds it to the hub.
Inspecting drums, shoes and wheel cylinder — measurable limits
Shoe lining: replace if lining thickness measures at or below 1.5 mm (0.06 in) at the thinnest point or if rivets are exposed; check for glazing, hot spots, or deep scoring.
Drum condition: measure diameter and out-of-round with a micrometer; typical maximum oversize varies by model—check FSM—but if drum diameter exceeds the stamped max or if taper/out-of-round exceeds service limits, replace.
Wheel cylinder: any wetness, rubber boot tears, or piston slow movement means rebuild or replace; rusty or pitted bores require replacement to avoid internal leakage and seized pistons.
Wheel cylinder: rebuild vs replace and bleed considerations
Rebuild when leakage is minor, bores are smooth, and rebuild kits are available with new pistons, cups, and springs.
Replace the wheel cylinder if corrosion, pitting, or bore damage exists or if the unit is corroded where the bleeder or line attaches.
After cylinder work bench-bleed the cylinder fittings if possible, then bleed the system vehicle-side using pressure or vacuum bleeding; follow the FSM-recommended sequence or bleed from the wheel farthest from the master cylinder first.
Brake shoe and hardware replacement: correct orientation and traps to avoid
Install the primary (leading) shoe toward the front of the vehicle, secondary (trailing) shoe toward the rear; confirm which shoe has the parking-brake lever tab and mount accordingly.
Always replace the full hardware kit; old springs lose tension and hold-downs can fail, which causes noise, uneven wear, and failed self-adjustment.
Keep spring tool tips visible and controlled during removal and installation; avoid over-stretching springs and ensure hold-down pins retain shoes flush to the backing plate.
Adjuster mechanism and parking-brake cable setup
Before reassembly, back off the star-wheel adjuster fully so shoes clear the drum and prevent dragging on first startup.
After assembly, use the star wheel through the backing-plate access hole to expand shoes until a slight drag is felt when spinning the drum, then back off a click or two as specified by FSM.
Inspect the parking-brake cable for fraying, binding, or seized linkages; adjust cable slack to achieve the specified pedal or lever travel and confirm the parking-brake engages both shoes evenly.
Reassembly, lubrication points and torque guidance
Apply a thin smear of high-temp brake grease only on the backing-plate contact points where shoes slide and on adjuster threads; do not get grease on linings or drum friction surfaces.
Use factory torque specs for wheel hub bolts and lug nuts; torque wheel nuts to the FSM value and re-check lug nut torque after initial road test miles as specified by Nissan.
Reinstall dust caps, check ABS tone ring clearance, and verify every spring and clip is fully seated before fitting the wheel.
Post-repair bleeding, pedal feel calibration and testing protocol
Bleed in the recommended order using pressure or vacuum methods until clean fluid flows and pedal feel is firm with steady resistance; keep the master cylinder topped during the process.
Bench checks: spin the drum with the vehicle on stands to feel for light drag when adjusted; verify parking brake engages and releases cleanly.
Road test: perform gradual low-speed stops, then moderate stops to confirm no pull, noise, or vibration; re-check lug torque and fluid level after the first 50–100 miles.
Troubleshooting common issues
Dragging drum: check star-wheel over-adjustment, collapsed return springs, stuck wheel-cylinder pistons, or rust in the drum bore; correct by freeing or replacing the offending item and re-adjusting.
Squeal or chatter: likely glazed linings, hardened or weak springs, or an out-of-round drum; deglaze or replace shoes and resurface or replace drum as needed.
Pulling to one side: inspect both rear shoes and cylinders for even travel, check parking-brake cable balance, and ensure front brake balance is correct if the system mixes drum and disc.
Cost and time estimates with a practical parts template
Time per axle: experienced DIY — roughly 1 to 2 hours; novice — 2 to 4 hours including cleaning and brake bleeding.
Typical parts costs: shoes $30–80 per axle, hardware kit $10–30, wheel cylinder $20–70 each, drums resurfacing $10–40 each or new drums $50–120 each depending on OEM vs aftermarket.
Save money by buying a combined shoe/hardware kit and comparing OEM part numbers against quality aftermarket brands, but never skip the hardware kit.
Model-specific quirks for Nissan Sentra, Frontier, Hardbody and older Altima
Some Sentra and older Altima models have adjuster access from the backing plate face; Frontier and Hardbody trucks often have more exposed parking-brake linkages that require partial in-situ adjustments.
Certain years use drums that bolt to the hub with studs; others press on and trap the parking brake lever inside—check the FSM diagram for removal notes before applying force.
ABS tone rings can sit close to the drum hub; avoid hammering near the ring and inspect sensor gaps after reassembly.
Printable quick-reference checklist and workflow
Pre-job: confirm VIN/year, order shoes, full hardware kit, wheel cylinders if suspect, and have FSM diagrams or dealer exploded view printed or on a tablet.
Step sequence: loosen lugs → lift and support → back off adjuster → remove drum → remove springs and hold-downs → replace hardware and shoes → install adjuster and wheel cylinder → assemble and lubricate contact points → bleed brakes → adjust star wheel → test.
Keep a small sheet with torque specs, bleeder order, and shoe clearance targets taped to your toolbox for quick reference during reassembly.
Common FAQs
How thick must shoe lining be before replacement? Replace shoes when lining thickness is at or below 1.5 mm (0.06 in) at the thinnest point, or when rivets are visible; follow Nissan FSM for exact values.
Can I resurface a drum twice? You can resurface a drum until it reaches the manufacturer’s maximum diameter; that limit is stamped in the drum or listed in the FSM — if diameter or out‑of‑round exceeds limits, replace the drum rather than keep resurfacing.
Do I need to bleed brakes after shoe replacement? Not always; if you did not open hydraulic lines or disturb the wheel cylinder, bleeding is usually not required, but bleed if any wheel cylinder was removed, replaced, or if the pedal feels soft or spongy.
Follow these checks and the vehicle-specific FSM diagrams and you’ll minimize errors, order correct parts, and achieve reliable rear drum operation on Nissan models with drum brakes.
