COMPRESSION TESTER: CORE PROVENANCE AND REPEAT RECORD
Original recording aid. Not a cranking procedure, replacement-parts approval or engine specification.

Case / work order:
Technician / date:
Vehicle, engine and cylinder in private case record:
Current vehicle test procedure / revision:
Tester make / model / tool ID:
Current instrument instructions / revision:
Test mode (compression / other, identify):
Hose and adapter IDs / configuration:
Original reading / units / record reference:
Actual conditions, procedure and when the reading changed:

TOOL QUESTION
Observed behavior, without assigning a cause:
Manufacturer's name for the relevant core / valve / assembly:
Fitted part identity confirmed / unknown:
Known earlier service or replacements:
Compatibility reference / revision / exact applicability:
Authorized replacement part, if confirmed by that reference:
Unresolved identification or setup questions:

SERVICE AND READINESS
Applicable depressurization / disconnection / safe-work procedure followed:
Inspection or service actually performed:
Parts used and provenance:
Required post-service equipment check and acceptance basis:
Actual check result:
Tool ready under applicable instructions / unresolved:

SEPARATE REPEAT
Original reading retained under record ID:
Reason and authorization for repeat:
Repeated reading / units / cylinder:
Tester / hose / adapter / core used:
Actual test conditions and vehicle procedure:
Changed engine state, cranking procedure or equipment:
Applicable vehicle criterion and source:
Supported conclusion:
Remaining limitations and next check:
Handoff / reviewer:

Do not assume a similar-looking tire valve is compatible with a compression tester.
A changed result after service alone does not isolate the core as the cause if other conditions changed.
No universal core specification, opening pressure, compression limit or repair instruction is supplied.