READING t+25:30 rework replacement pump does not fit: drilled to match 90 s lost

A real job, measured

One hour of real work. Every minute accounted for.

57 minutes of unedited head-camera footage of a timing belt and water pump job. Ynteract turned it into a waste readout and a 46-step procedure. Nobody wrote or edited anything.

Footage: NoNonsenseKnowHow on YouTube

Waste readout

Where the hour went.

16%
value-added work: the belt, pump and rollers themselves
65%
necessary but not value-added: access (remove / refit) 16 min, setup 12 min, checks / testing 7 min, positioning 2 min
18%
waste: 10.5 minutes of moving parts, waiting, rework and extra motion
60%
of the time both hands were working, with 108 tool changes
0m10m20m30m40m50m12345678
Value-addedNecessary: access, setup, checksWasteRework
  1. 1Prepare and strip upper-engine access
  2. 2Open the lower drive and remove the timing belt
  3. 3Drain the cooling system and remove the water pump
  4. 4Prepare and install the replacement water pump
  5. 5Install and check the timing belt and rollers
  6. 6Reassemble the timing and accessory drives
  7. 7Restore the mount, covers and wheel
  8. 8Finish filling and check engine operation

Waste by type

Transport5.2 min
Waiting / idle2.9 min
Rework / redo1.6 min
Extra motion0.8 min
Searching0.1 min

How it is measured

Every critical change in the footage becomes a record: the action, what each hand is doing, what touches what, and what changed. Each moment is then classed as value-added, necessary preparation, or one of the lean wastes. These figures are the system's own estimates from the footage, without a human review; 7% of the moments are marked low confidence in the full readout.

Full waste readout

Found from the footage alone

The moments that cost the most.

The mechanic removed the trial-fitted replacement water pump, compared its mounting holes with the old pump using drill Rework / redo25:30 · 90 s

The mechanic removed the trial-fitted replacement water pump, compared its mounting holes with the old pump using drill bits, and enlarged two holes with a cordless drill. The modified pump was then returned to the engine and refitted.

Fix Before trial fitting, compare the replacement pump’s flange and mounting holes with the removed pump and mounting fasteners. Obtain a correctly fitting replacement if they do not match, avoiding corrective drilling and refitting.

The crankshaft socket drive remained in place for about 18 seconds with no work occurring. It was then withdrawn, followWaiting / idle36:33 · 18 s

The crankshaft socket drive remained in place for about 18 seconds with no work occurring. It was then withdrawn, followed by selection of a cordless ratchet and socket.

Fix Stage the cordless ratchet and socket before the manual rotation check, and make removal of the manual drive the next step once verification is complete.

The mechanic returned the impact wrench, stowed a long pry bar, and carried a liquid jug to the rear workbench. The jug Transport54:42 · 15 s

The mechanic returned the impact wrench, stowed a long pry bar, and carried a liquid jug to the rear workbench. The jug was then positioned for filling.

Fix Fill the required liquid jug during job preparation and stage it on the service cart, eliminating the separate refill trip after wheel installation.

The mechanic moved the removed accessory pulleys and belts onto the windshield cowl in several separate handling actionsTransport5:57 · 12 s

The mechanic moved the removed accessory pulleys and belts onto the windshield cowl in several separate handling actions.

Fix Place a labeled parts tray within easy reach beside the engine so each pulley and belt can be deposited directly as it is removed.

The mechanic retrieved a green drain pan from storage and carried it through the shop to the car’s front bumper.Transport14:48 · 9 s

The mechanic retrieved a green drain pan from storage and carried it through the shop to the car’s front bumper.

Fix Stage the drain pan at the front of the vehicle during job setup, outside the walking path, so it is ready when radiator draining begins.

The mechanic lifted the filled green drain pan and carried it through the shelving aisle to the waste-fluid tank. The paTransport27:21 · 9 s

The mechanic lifted the filled green drain pan and carried it through the shelving aisle to the waste-fluid tank. The pan and tank inlet were then positioned for disposal.

Fix Use a wheeled coolant drain collector that can be rolled to the waste-fluid tank, avoiding the hand-carry of a filled pan.

Data centre

A server teardown, read by machine.

An HP ProLiant DL380 G5 taken apart on a bench. Ynteract follows both hands, records every critical change, reads and double-checks the nameplate, finds the service guide for that exact model, and matches every part it saw to the guide, correcting two names along the way.

Both hands, separatelyWhat the left and right hand each do, moment by moment.
Every critical changeThe action, what touches what, and the state before and after.
Read, check, look upThe nameplate read, verified on a close-up, then the right manual.
Parts, with pagesEvery part it saw, matched to the service guide's parts list.

Footage: Solid Systems Ltd on YouTube, used for demonstration.

Film one job. Get the procedure and the readout.