Reading torque specs & assembly notes from the catalog
Notes carry the conditions
Around the parts list sit notes that scope and qualify the part: “renew”, “use with”, “up to chassis …”, “requires”. They turn a number from “this part” into “this part, fitted this way, on this build”. Reading them is the difference between a repair that holds and one that returns.
Renew-only and one-time-use
Many fasteners, seals and gaskets are flagged renew-only: stretch bolts, crush washers, self-locking nuts. Reusing them is a comeback waiting to happen. The catalog flags them so you order them with the job, not after the old one fails.
Tightening and assembly information
Some catalogs surface tightening sequences, torque-relevant notes and assembly conditions alongside the parts, or link to the workshop information. Use them: the right part torqued wrong fails as surely as the wrong part. Identification and assembly are two halves of the same job.
Pair the part with its conditions
When you read a callout, read its note in the same glance. Order the part, the renew-only items it depends on, and note any fitment condition. That habit closes the gap between “ordered the right part” and “did the repair right”.
EPC identifies, manuals instruct
The EPC’s job is identification; a repair manual’s job is procedure. Some systems link the two. Know which you’re reading: use the catalog to get the exact part and its conditions, and the manual for the full fitting method.
Frequently asked questions
Does the EPC show torque specs?
Some catalogs surface tightening notes and assembly conditions alongside the parts or link to the workshop information. The EPC’s core job is identification; pair it with the repair manual for full procedures.
What are renew-only parts?
Fasteners, seals and gaskets the manufacturer flags as single-use — stretch bolts, crush washers, self-locking nuts. The catalog flags them so you order them with the job rather than reusing and risking a comeback.
Why read the assembly notes?
They carry conditions like “renew”, “use with” and build-date limits. Skipping them means a correct part can still be fitted wrong, causing a return.